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< a href = "entering__variable_8cc.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < div class = "line" > < a id = "l00001" name = "l00001" > < / a > < span class = "lineno" > 1< / span > < span class = "comment" > // Copyright 2010-2021 Google LLC< / span > < / div >
< div class = "line" > < a id = "l00002" name = "l00002" > < / a > < span class = "lineno" > 2< / span > < span class = "comment" > // Licensed under the Apache License, Version 2.0 (the " License" );< / span > < / div >
< div class = "line" > < a id = "l00003" name = "l00003" > < / a > < span class = "lineno" > 3< / span > < span class = "comment" > // you may not use this file except in compliance with the License.< / span > < / div >
< div class = "line" > < a id = "l00004" name = "l00004" > < / a > < span class = "lineno" > 4< / span > < span class = "comment" > // You may obtain a copy of the License at< / span > < / div >
< div class = "line" > < a id = "l00005" name = "l00005" > < / a > < span class = "lineno" > 5< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00006" name = "l00006" > < / a > < span class = "lineno" > 6< / span > < span class = "comment" > // http://www.apache.org/licenses/LICENSE-2.0< / span > < / div >
< div class = "line" > < a id = "l00007" name = "l00007" > < / a > < span class = "lineno" > 7< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00008" name = "l00008" > < / a > < span class = "lineno" > 8< / span > < span class = "comment" > // Unless required by applicable law or agreed to in writing, software< / span > < / div >
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< div class = "line" > < a id = "l00012" name = "l00012" > < / a > < span class = "lineno" > 12< / span > < span class = "comment" > // limitations under the License.< / span > < / div >
< div class = "line" > < a id = "l00013" name = "l00013" > < / a > < span class = "lineno" > 13< / span > < / div >
< div class = "line" > < a id = "l00014" name = "l00014" > < / a > < span class = "lineno" > 14< / span > < span class = "preprocessor" > #include " < a class = "code" href = "entering__variable_8h.html" > ortools/glop/entering_variable.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00015" name = "l00015" > < / a > < span class = "lineno" > 15< / span > < / div >
< div class = "line" > < a id = "l00016" name = "l00016" > < / a > < span class = "lineno" > 16< / span > < span class = "preprocessor" > #include < queue> < / span > < / div >
< div class = "line" > < a id = "l00017" name = "l00017" > < / a > < span class = "lineno" > 17< / span > < / div >
< div class = "line" > < a id = "l00018" name = "l00018" > < / a > < span class = "lineno" > 18< / span > < span class = "preprocessor" > #include " < a class = "code" href = "timer_8h.html" > ortools/base/timer.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00019" name = "l00019" > < / a > < span class = "lineno" > 19< / span > < span class = "preprocessor" > #include " < a class = "code" href = "lp__data_2lp__utils_8h.html" > ortools/lp_data/lp_utils.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "preprocessor" > #include " < a class = "code" href = "port_2proto__utils_8h.html" > ortools/port/proto_utils.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "keyword" > namespace < / span > < a class = "code hl_namespace" href = "namespaceoperations__research.html" > operations_research< / a > {< / div >
< div class = "line" > < a id = "l00023" name = "l00023" > < / a > < span class = "lineno" > 23< / span > < span class = "keyword" > namespace < / span > glop {< / div >
< div class = "line" > < a id = "l00024" name = "l00024" > < / a > < span class = "lineno" > 24< / span > < / div >
< div class = "line" > < a id = "l00025" name = "l00025" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51" > 25< / a > < / span > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51" > EnteringVariable::EnteringVariable< / a > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_variables_info.html" > VariablesInfo< / a > & variables_info,< / div >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > 26< / span > absl::BitGenRef random,< / div >
< div class = "line" > < a id = "l00027" name = "l00027" > < / a > < span class = "lineno" > 27< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_reduced_costs.html" > ReducedCosts< / a > * reduced_costs)< / div >
< div class = "line" > < a id = "l00028" name = "l00028" > < / a > < span class = "lineno" > 28< / span > : variables_info_(variables_info),< / div >
< div class = "line" > < a id = "l00029" name = "l00029" > < / a > < span class = "lineno" > 29< / span > random_(random),< / div >
< div class = "line" > < a id = "l00030" name = "l00030" > < / a > < span class = "lineno" > 30< / span > reduced_costs_(reduced_costs),< / div >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > parameters_() {}< / div >
< div class = "line" > < a id = "l00032" name = "l00032" > < / a > < span class = "lineno" > 32< / span > < / div >
< div class = "line" > < a id = "l00033" name = "l00033" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03" > 33< / a > < / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_status.html" > Status< / a > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03" > EnteringVariable::DualChooseEnteringColumn< / a > (< / div >
< div class = "line" > < a id = "l00034" name = "l00034" > < / a > < span class = "lineno" > 34< / span > < span class = "keywordtype" > bool< / span > nothing_to_recompute, < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_update_row.html" > UpdateRow< / a > & update_row,< / div >
< div class = "line" > < a id = "l00035" name = "l00035" > < / a > < span class = "lineno" > 35< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > cost_variation, std::vector< ColIndex> * bound_flip_candidates,< / div >
< div class = "line" > < a id = "l00036" name = "l00036" > < / a > < span class = "lineno" > 36< / span > ColIndex* entering_col) {< / div >
< div class = "line" > < a id = "l00037" name = "l00037" > < / a > < span class = "lineno" > 37< / span > < a class = "code hl_define" href = "status_8h.html#ae9a90d3e61ffae636234f2c1283117d8" > GLOP_RETURN_ERROR_IF_NULL< / a > (entering_col);< / div >
< div class = "line" > < a id = "l00038" name = "l00038" > < / a > < span class = "lineno" > 38< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > DenseRow< / a > & update_coefficient = update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#a30fddb9e35865ba28420bd52538a183f" > GetCoefficients< / a > ();< / div >
< div class = "line" > < a id = "l00039" name = "l00039" > < / a > < span class = "lineno" > 39< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > DenseRow< / a > & reduced_costs = reduced_costs_-> < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_reduced_costs.html#a9f7d17ed171863f104fbb2a450f89251" > GetReducedCosts< / a > ();< / div >
< div class = "line" > < a id = "l00040" name = "l00040" > < / a > < span class = "lineno" > 40< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00041" name = "l00041" > < / a > < span class = "lineno" > 41< / span > < / div >
< div class = "line" > < a id = "l00042" name = "l00042" > < / a > < span class = "lineno" > 42< / span > breakpoints_.clear();< / div >
< div class = "line" > < a id = "l00043" name = "l00043" > < / a > < span class = "lineno" > 43< / span > breakpoints_.reserve(update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ().size());< / div >
< div class = "line" > < a id = "l00044" name = "l00044" > < / a > < span class = "lineno" > 44< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1_bitset64.html" > DenseBitRow< / a > & can_decrease = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a71d4734d51e7037c043b68a74bd7857f" > GetCanDecreaseBitRow< / a > ();< / div >
< div class = "line" > < a id = "l00045" name = "l00045" > < / a > < span class = "lineno" > 45< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1_bitset64.html" > DenseBitRow< / a > & can_increase = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a6cc56ab5da3a82aa2793d18a37f422c4" > GetCanIncreaseBitRow< / a > ();< / div >
< div class = "line" > < a id = "l00046" name = "l00046" > < / a > < span class = "lineno" > 46< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1_bitset64.html" > DenseBitRow< / a > & is_boxed = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a505af340486fcf70ee83abb32e31a628" > GetNonBasicBoxedVariables< / a > ();< / div >
< div class = "line" > < a id = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < / div >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > 48< / span > < span class = "comment" > // If everything has the best possible precision currently, we ignore< / span > < / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > < span class = "comment" > // low coefficients. This make sure we will never choose a pivot too small. It< / span > < / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < span class = "comment" > // however can degrade the dual feasibility of the solution, but we can always< / span > < / div >
< div class = "line" > < a id = "l00051" name = "l00051" > < / a > < span class = "lineno" > 51< / span > < span class = "comment" > // fix that later.< / span > < / div >
< div class = "line" > < a id = "l00052" name = "l00052" > < / a > < span class = "lineno" > 52< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00053" name = "l00053" > < / a > < span class = "lineno" > 53< / span > < span class = "comment" > // TODO(user): It is unclear if this is a good idea, but the primal simplex< / span > < / div >
< div class = "line" > < a id = "l00054" name = "l00054" > < / a > < span class = "lineno" > 54< / span > < span class = "comment" > // have pretty good/stable behavior with a similar logic. Experiment seems< / span > < / div >
< div class = "line" > < a id = "l00055" name = "l00055" > < / a > < span class = "lineno" > 55< / span > < span class = "comment" > // to show that this works well with the dual too.< / span > < / div >
< div class = "line" > < a id = "l00056" name = "l00056" > < / a > < span class = "lineno" > 56< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > threshold = nothing_to_recompute< / div >
< div class = "line" > < a id = "l00057" name = "l00057" > < / a > < span class = "lineno" > 57< / span > ? parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a68285ca7ffce0d4295c9ce20414eaec4" > minimum_acceptable_pivot< / a > ()< / div >
< div class = "line" > < a id = "l00058" name = "l00058" > < / a > < span class = "lineno" > 58< / span > : parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a802ffefaec0732058182bb426e8edbd2" > ratio_test_zero_threshold< / a > ();< / div >
< div class = "line" > < a id = "l00059" name = "l00059" > < / a > < span class = "lineno" > 59< / span > < / div >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > < span class = "comment" > // Harris ratio test. See below for more explanation. Here this is used to< / span > < / div >
< div class = "line" > < a id = "l00061" name = "l00061" > < / a > < span class = "lineno" > 61< / span > < span class = "comment" > // prune the first pass by not enqueueing ColWithRatio for columns that have< / span > < / div >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > 62< / span > < span class = "comment" > // a ratio greater than the current harris_ratio.< / span > < / div >
< div class = "line" > < a id = "l00063" name = "l00063" > < / a > < span class = "lineno" > 63< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > harris_tolerance =< / div >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a40a2f57f5c801d77d6af1848383a4171" > harris_tolerance_ratio< / a > () *< / div >
< div class = "line" > < a id = "l00065" name = "l00065" > < / a > < span class = "lineno" > 65< / span > reduced_costs_-> < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_reduced_costs.html#aa6a9551b792028d16dc7123c80f429d1" > GetDualFeasibilityTolerance< / a > ();< / div >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< Fractional> ::max< / a > ();< / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > < / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > < span class = "comment" > // Like for the primal, we always allow a positive ministep, even if a< / span > < / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > < span class = "comment" > // variable is already infeasible by more than the tolerance.< / span > < / div >
< div class = "line" > < a id = "l00070" name = "l00070" > < / a > < span class = "lineno" > 70< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > minimum_delta =< / div >
< div class = "line" > < a id = "l00071" name = "l00071" > < / a > < span class = "lineno" > 71< / span > parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#aad2c4edf11b93e46bae7f18ebd43301c" > degenerate_ministep_factor< / a > () *< / div >
< div class = "line" > < a id = "l00072" name = "l00072" > < / a > < span class = "lineno" > 72< / span > reduced_costs_-> < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_reduced_costs.html#aa6a9551b792028d16dc7123c80f429d1" > GetDualFeasibilityTolerance< / a > ();< / div >
< div class = "line" > < a id = "l00073" name = "l00073" > < / a > < span class = "lineno" > 73< / span > < / div >
< div class = "line" > < a id = "l00074" name = "l00074" > < / a > < span class = "lineno" > 74< / span > num_operations_ += 10 * update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ().size();< / div >
< div class = "line" > < a id = "l00075" name = "l00075" > < / a > < span class = "lineno" > 75< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > ColIndex < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > : update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ()) {< / div >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > < span class = "comment" > // We will add ratio * coeff to this column with a ratio positive or zero.< / span > < / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > < span class = "comment" > // cost_variation makes sure the leaving variable will be dual-feasible< / span > < / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > < span class = "comment" > // (its update coeff is sign(cost_variation) * 1.0).< / span > < / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > coeff = (cost_variation > 0.0) ? update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]< / div >
< div class = "line" > < a id = "l00080" name = "l00080" > < / a > < span class = "lineno" > 80< / span > : -update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ];< / div >
< div class = "line" > < a id = "l00081" name = "l00081" > < / a > < span class = "lineno" > 81< / span > < / div >
< div class = "line" > < a id = "l00082" name = "l00082" > < / a > < span class = "lineno" > 82< / span > < span class = "comment" > // In this case, at some point the reduced cost will be positive if not< / span > < / div >
< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > 83< / span > < span class = "comment" > // already, and the column will be dual-infeasible.< / span > < / div >
< div class = "line" > < a id = "l00084" name = "l00084" > < / a > < span class = "lineno" > 84< / span > < span class = "keywordflow" > if< / span > (can_decrease.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ) & & coeff > threshold) {< / div >
< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > 85< / span > < span class = "keywordflow" > if< / span > (!is_boxed[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) {< / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > < span class = "keywordflow" > if< / span > (-reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] > harris_ratio * coeff) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00087" name = "l00087" > < / a > < span class = "lineno" > 87< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a id = "l00088" name = "l00088" > < / a > < span class = "lineno" > 88< / span > harris_ratio, (-reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] + harris_tolerance) / coeff);< / div >
< div class = "line" > < a id = "l00089" name = "l00089" > < / a > < span class = "lineno" > 89< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (minimum_delta / coeff, harris_ratio);< / div >
< div class = "line" > < a id = "l00090" name = "l00090" > < / a > < span class = "lineno" > 90< / span > }< / div >
< div class = "line" > < a id = "l00091" name = "l00091" > < / a > < span class = "lineno" > 91< / span > breakpoints_.push_back(ColWithRatio(< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > , -reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ], coeff));< / div >
< div class = "line" > < a id = "l00092" name = "l00092" > < / a > < span class = "lineno" > 92< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00093" name = "l00093" > < / a > < span class = "lineno" > 93< / span > }< / div >
< div class = "line" > < a id = "l00094" name = "l00094" > < / a > < span class = "lineno" > 94< / span > < / div >
< div class = "line" > < a id = "l00095" name = "l00095" > < / a > < span class = "lineno" > 95< / span > < span class = "comment" > // In this case, at some point the reduced cost will be negative if not< / span > < / div >
< div class = "line" > < a id = "l00096" name = "l00096" > < / a > < span class = "lineno" > 96< / span > < span class = "comment" > // already, and the column will be dual-infeasible.< / span > < / div >
< div class = "line" > < a id = "l00097" name = "l00097" > < / a > < span class = "lineno" > 97< / span > < span class = "keywordflow" > if< / span > (can_increase.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ) & & coeff < -threshold) {< / div >
< div class = "line" > < a id = "l00098" name = "l00098" > < / a > < span class = "lineno" > 98< / span > < span class = "keywordflow" > if< / span > (!is_boxed[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) {< / div >
< div class = "line" > < a id = "l00099" name = "l00099" > < / a > < span class = "lineno" > 99< / span > < span class = "keywordflow" > if< / span > (reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] > harris_ratio * -coeff) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00100" name = "l00100" > < / a > < span class = "lineno" > 100< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a id = "l00101" name = "l00101" > < / a > < span class = "lineno" > 101< / span > harris_ratio, (reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] + harris_tolerance) / -coeff);< / div >
< div class = "line" > < a id = "l00102" name = "l00102" > < / a > < span class = "lineno" > 102< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (minimum_delta / -coeff, harris_ratio);< / div >
< div class = "line" > < a id = "l00103" name = "l00103" > < / a > < span class = "lineno" > 103< / span > }< / div >
< div class = "line" > < a id = "l00104" name = "l00104" > < / a > < span class = "lineno" > 104< / span > breakpoints_.push_back(ColWithRatio(< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > , reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ], -coeff));< / div >
< div class = "line" > < a id = "l00105" name = "l00105" > < / a > < span class = "lineno" > 105< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00106" name = "l00106" > < / a > < span class = "lineno" > 106< / span > }< / div >
< div class = "line" > < a id = "l00107" name = "l00107" > < / a > < span class = "lineno" > 107< / span > }< / div >
< div class = "line" > < a id = "l00108" name = "l00108" > < / a > < span class = "lineno" > 108< / span > < / div >
< div class = "line" > < a id = "l00109" name = "l00109" > < / a > < span class = "lineno" > 109< / span > < span class = "comment" > // Process the breakpoints in priority order as suggested by Maros in< / span > < / div >
< div class = "line" > < a id = "l00110" name = "l00110" > < / a > < span class = "lineno" > 110< / span > < span class = "comment" > // I. Maros, " A generalized dual phase-2 simplex algorithm" , European Journal< / span > < / div >
< div class = "line" > < a id = "l00111" name = "l00111" > < / a > < span class = "lineno" > 111< / span > < span class = "comment" > // of Operational Research, 149(1):1-16, 2003.< / span > < / div >
< div class = "line" > < a id = "l00112" name = "l00112" > < / a > < span class = "lineno" > 112< / span > < span class = "comment" > // We use directly make_heap() to avoid a copy of breakpoints, benchmark shows< / span > < / div >
< div class = "line" > < a id = "l00113" name = "l00113" > < / a > < span class = "lineno" > 113< / span > < span class = "comment" > // that it is slightly faster.< / span > < / div >
< div class = "line" > < a id = "l00114" name = "l00114" > < / a > < span class = "lineno" > 114< / span > std::make_heap(breakpoints_.begin(), breakpoints_.end());< / div >
< div class = "line" > < a id = "l00115" name = "l00115" > < / a > < span class = "lineno" > 115< / span > < / div >
< div class = "line" > < a id = "l00116" name = "l00116" > < / a > < span class = "lineno" > 116< / span > < span class = "comment" > // Harris ratio test. Since we process the breakpoints by increasing ratio, we< / span > < / div >
< div class = "line" > < a id = "l00117" name = "l00117" > < / a > < span class = "lineno" > 117< / span > < span class = "comment" > // do not need a two-pass algorithm as described in the literature. Each time< / span > < / div >
< div class = "line" > < a id = "l00118" name = "l00118" > < / a > < span class = "lineno" > 118< / span > < span class = "comment" > // we process a new breakpoint, we update the harris_ratio of all the< / span > < / div >
< div class = "line" > < a id = "l00119" name = "l00119" > < / a > < span class = "lineno" > 119< / span > < span class = "comment" > // processed breakpoints. For the first new breakpoint with a ratio greater< / span > < / div >
< div class = "line" > < a id = "l00120" name = "l00120" > < / a > < span class = "lineno" > 120< / span > < span class = "comment" > // than the current harris_ratio we know that:< / span > < / div >
< div class = "line" > < a id = "l00121" name = "l00121" > < / a > < span class = "lineno" > 121< / span > < span class = "comment" > // - All the unprocessed breakpoints will have a ratio greater too, so they< / span > < / div >
< div class = "line" > < a id = "l00122" name = "l00122" > < / a > < span class = "lineno" > 122< / span > < span class = "comment" > // will not contribute to the minimum Harris ratio.< / span > < / div >
< div class = "line" > < a id = "l00123" name = "l00123" > < / a > < span class = "lineno" > 123< / span > < span class = "comment" > // - We thus have the actual harris_ratio.< / span > < / div >
< div class = "line" > < a id = "l00124" name = "l00124" > < / a > < span class = "lineno" > 124< / span > < span class = "comment" > // - We have processed all breakpoints with a ratio smaller than it.< / span > < / div >
< div class = "line" > < a id = "l00125" name = "l00125" > < / a > < span class = "lineno" > 125< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< Fractional> ::max< / a > ();< / div >
< div class = "line" > < a id = "l00126" name = "l00126" > < / a > < span class = "lineno" > 126< / span > < / div >
< div class = "line" > < a id = "l00127" name = "l00127" > < / a > < span class = "lineno" > 127< / span > *entering_col = < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afb755b7934d8679476e2f05a89739bcd" > kInvalidCol< / a > ;< / div >
< div class = "line" > < a id = "l00128" name = "l00128" > < / a > < span class = "lineno" > 128< / span > bound_flip_candidates-> clear();< / div >
< div class = "line" > < a id = "l00129" name = "l00129" > < / a > < span class = "lineno" > 129< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > step = 0.0;< / div >
< div class = "line" > < a id = "l00130" name = "l00130" > < / a > < span class = "lineno" > 130< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > best_coeff = -1.0;< / div >
< div class = "line" > < a id = "l00131" name = "l00131" > < / a > < span class = "lineno" > 131< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > variation_magnitude = std::abs(cost_variation);< / div >
< div class = "line" > < a id = "l00132" name = "l00132" > < / a > < span class = "lineno" > 132< / span > equivalent_entering_choices_.clear();< / div >
< div class = "line" > < a id = "l00133" name = "l00133" > < / a > < span class = "lineno" > 133< / span > < span class = "keywordflow" > while< / span > (!breakpoints_.empty()) {< / div >
< div class = "line" > < a id = "l00134" name = "l00134" > < / a > < span class = "lineno" > 134< / span > < span class = "keyword" > const< / span > ColWithRatio top = breakpoints_.front();< / div >
< div class = "line" > < a id = "l00135" name = "l00135" > < / a > < span class = "lineno" > 135< / span > < span class = "keywordflow" > if< / span > (top.ratio > harris_ratio) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00136" name = "l00136" > < / a > < span class = "lineno" > 136< / span > < / div >
< div class = "line" > < a id = "l00137" name = "l00137" > < / a > < span class = "lineno" > 137< / span > < span class = "comment" > // If the column is boxed, we can just switch its bounds and< / span > < / div >
< div class = "line" > < a id = "l00138" name = "l00138" > < / a > < span class = "lineno" > 138< / span > < span class = "comment" > // ignore the breakpoint! But we need to see if the entering row still< / span > < / div >
< div class = "line" > < a id = "l00139" name = "l00139" > < / a > < span class = "lineno" > 139< / span > < span class = "comment" > // improve the objective. This is called the bound flipping ratio test in< / span > < / div >
< div class = "line" > < a id = "l00140" name = "l00140" > < / a > < span class = "lineno" > 140< / span > < span class = "comment" > // the literature. See for instance:< / span > < / div >
< div class = "line" > < a id = "l00141" name = "l00141" > < / a > < span class = "lineno" > 141< / span > < span class = "comment" > // http://www.mpi-inf.mpg.de/conferences/adfocs-03/Slides/Bixby_2.pdf< / span > < / div >
< div class = "line" > < a id = "l00142" name = "l00142" > < / a > < span class = "lineno" > 142< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00143" name = "l00143" > < / a > < span class = "lineno" > 143< / span > < span class = "comment" > // For each bound flip, |cost_variation| decreases by< / span > < / div >
< div class = "line" > < a id = "l00144" name = "l00144" > < / a > < span class = "lineno" > 144< / span > < span class = "comment" > // |upper_bound - lower_bound| times |coeff|.< / span > < / div >
< div class = "line" > < a id = "l00145" name = "l00145" > < / a > < span class = "lineno" > 145< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00146" name = "l00146" > < / a > < span class = "lineno" > 146< / span > < span class = "comment" > // Note that the actual flipping will be done afterwards by< / span > < / div >
< div class = "line" > < a id = "l00147" name = "l00147" > < / a > < span class = "lineno" > 147< / span > < span class = "comment" > // MakeBoxedVariableDualFeasible() in revised_simplex.cc.< / span > < / div >
< div class = "line" > < a id = "l00148" name = "l00148" > < / a > < span class = "lineno" > 148< / span > < span class = "keywordflow" > if< / span > (variation_magnitude > threshold) {< / div >
< div class = "line" > < a id = "l00149" name = "l00149" > < / a > < span class = "lineno" > 149< / span > < span class = "keywordflow" > if< / span > (is_boxed[top.col]) {< / div >
< div class = "line" > < a id = "l00150" name = "l00150" > < / a > < span class = "lineno" > 150< / span > variation_magnitude -=< / div >
< div class = "line" > < a id = "l00151" name = "l00151" > < / a > < span class = "lineno" > 151< / span > variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a611fb1da73c33e2716b380db980fa825" > GetBoundDifference< / a > (top.col) * top.coeff_magnitude;< / div >
< div class = "line" > < a id = "l00152" name = "l00152" > < / a > < span class = "lineno" > 152< / span > < span class = "keywordflow" > if< / span > (variation_magnitude > threshold) {< / div >
< div class = "line" > < a id = "l00153" name = "l00153" > < / a > < span class = "lineno" > 153< / span > bound_flip_candidates-> push_back(top.col);< / div >
< div class = "line" > < a id = "l00154" name = "l00154" > < / a > < span class = "lineno" > 154< / span > std::pop_heap(breakpoints_.begin(), breakpoints_.end());< / div >
< div class = "line" > < a id = "l00155" name = "l00155" > < / a > < span class = "lineno" > 155< / span > breakpoints_.pop_back();< / div >
< div class = "line" > < a id = "l00156" name = "l00156" > < / a > < span class = "lineno" > 156< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00157" name = "l00157" > < / a > < span class = "lineno" > 157< / span > }< / div >
< div class = "line" > < a id = "l00158" name = "l00158" > < / a > < span class = "lineno" > 158< / span > }< / div >
< div class = "line" > < a id = "l00159" name = "l00159" > < / a > < span class = "lineno" > 159< / span > }< / div >
< div class = "line" > < a id = "l00160" name = "l00160" > < / a > < span class = "lineno" > 160< / span > < / div >
< div class = "line" > < a id = "l00161" name = "l00161" > < / a > < span class = "lineno" > 161< / span > < span class = "comment" > // TODO(user): We want to maximize both the ratio (objective improvement)< / span > < / div >
< div class = "line" > < a id = "l00162" name = "l00162" > < / a > < span class = "lineno" > 162< / span > < span class = "comment" > // and the coeff_magnitude (stable pivot), so we have to make some< / span > < / div >
< div class = "line" > < a id = "l00163" name = "l00163" > < / a > < span class = "lineno" > 163< / span > < span class = "comment" > // trade-offs. Investigate alternative strategies.< / span > < / div >
< div class = "line" > < a id = "l00164" name = "l00164" > < / a > < span class = "lineno" > 164< / span > < span class = "keywordflow" > if< / span > (top.coeff_magnitude > = best_coeff) {< / div >
< div class = "line" > < a id = "l00165" name = "l00165" > < / a > < span class = "lineno" > 165< / span > < span class = "comment" > // Update harris_ratio. Note that because we process ratio in order, the< / span > < / div >
< div class = "line" > < a id = "l00166" name = "l00166" > < / a > < span class = "lineno" > 166< / span > < span class = "comment" > // harris ratio can only get smaller if the coeff_magnitude is bigger< / span > < / div >
< div class = "line" > < a id = "l00167" name = "l00167" > < / a > < span class = "lineno" > 167< / span > < span class = "comment" > // than the one of the best coefficient.< / span > < / div >
< div class = "line" > < a id = "l00168" name = "l00168" > < / a > < span class = "lineno" > 168< / span > harris_ratio = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a id = "l00169" name = "l00169" > < / a > < span class = "lineno" > 169< / span > harris_ratio, top.ratio + harris_tolerance / top.coeff_magnitude);< / div >
< div class = "line" > < a id = "l00170" name = "l00170" > < / a > < span class = "lineno" > 170< / span > < / div >
< div class = "line" > < a id = "l00171" name = "l00171" > < / a > < span class = "lineno" > 171< / span > < span class = "comment" > // If the dual infeasibility is too high, the harris_ratio can be< / span > < / div >
< div class = "line" > < a id = "l00172" name = "l00172" > < / a > < span class = "lineno" > 172< / span > < span class = "comment" > // negative. In this case we set it to 0.0, allowing any infeasible< / span > < / div >
< div class = "line" > < a id = "l00173" name = "l00173" > < / a > < span class = "lineno" > 173< / span > < span class = "comment" > // position to enter the basis. This is quite important because its< / span > < / div >
< div class = "line" > < a id = "l00174" name = "l00174" > < / a > < span class = "lineno" > 174< / span > < span class = "comment" > // helps in the choice of a stable pivot.< / span > < / div >
< div class = "line" > < a id = "l00175" name = "l00175" > < / a > < span class = "lineno" > 175< / span > harris_ratio =< / div >
< div class = "line" > < a id = "l00176" name = "l00176" > < / a > < span class = "lineno" > 176< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (harris_ratio, minimum_delta / top.coeff_magnitude);< / div >
< div class = "line" > < a id = "l00177" name = "l00177" > < / a > < span class = "lineno" > 177< / span > < / div >
< div class = "line" > < a id = "l00178" name = "l00178" > < / a > < span class = "lineno" > 178< / span > < span class = "keywordflow" > if< / span > (top.coeff_magnitude == best_coeff & & top.ratio == step) {< / div >
< div class = "line" > < a id = "l00179" name = "l00179" > < / a > < span class = "lineno" > 179< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (*entering_col, < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afb755b7934d8679476e2f05a89739bcd" > kInvalidCol< / a > );< / div >
< div class = "line" > < a id = "l00180" name = "l00180" > < / a > < span class = "lineno" > 180< / span > equivalent_entering_choices_.push_back(top.col);< / div >
< div class = "line" > < a id = "l00181" name = "l00181" > < / a > < span class = "lineno" > 181< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00182" name = "l00182" > < / a > < span class = "lineno" > 182< / span > equivalent_entering_choices_.clear();< / div >
< div class = "line" > < a id = "l00183" name = "l00183" > < / a > < span class = "lineno" > 183< / span > best_coeff = top.coeff_magnitude;< / div >
< div class = "line" > < a id = "l00184" name = "l00184" > < / a > < span class = "lineno" > 184< / span > *entering_col = top.col;< / div >
< div class = "line" > < a id = "l00185" name = "l00185" > < / a > < span class = "lineno" > 185< / span > < / div >
< div class = "line" > < a id = "l00186" name = "l00186" > < / a > < span class = "lineno" > 186< / span > < span class = "comment" > // Note that the step is not directly used, so it is okay to leave it< / span > < / div >
< div class = "line" > < a id = "l00187" name = "l00187" > < / a > < span class = "lineno" > 187< / span > < span class = "comment" > // negative.< / span > < / div >
< div class = "line" > < a id = "l00188" name = "l00188" > < / a > < span class = "lineno" > 188< / span > step = top.ratio;< / div >
< div class = "line" > < a id = "l00189" name = "l00189" > < / a > < span class = "lineno" > 189< / span > }< / div >
< div class = "line" > < a id = "l00190" name = "l00190" > < / a > < span class = "lineno" > 190< / span > }< / div >
< div class = "line" > < a id = "l00191" name = "l00191" > < / a > < span class = "lineno" > 191< / span > < / div >
< div class = "line" > < a id = "l00192" name = "l00192" > < / a > < span class = "lineno" > 192< / span > < span class = "comment" > // Remove the top breakpoint and maintain the heap structure.< / span > < / div >
< div class = "line" > < a id = "l00193" name = "l00193" > < / a > < span class = "lineno" > 193< / span > < span class = "comment" > // This is the same as doing a pop() on a priority_queue.< / span > < / div >
< div class = "line" > < a id = "l00194" name = "l00194" > < / a > < span class = "lineno" > 194< / span > std::pop_heap(breakpoints_.begin(), breakpoints_.end());< / div >
< div class = "line" > < a id = "l00195" name = "l00195" > < / a > < span class = "lineno" > 195< / span > breakpoints_.pop_back();< / div >
< div class = "line" > < a id = "l00196" name = "l00196" > < / a > < span class = "lineno" > 196< / span > }< / div >
< div class = "line" > < a id = "l00197" name = "l00197" > < / a > < span class = "lineno" > 197< / span > < / div >
< div class = "line" > < a id = "l00198" name = "l00198" > < / a > < span class = "lineno" > 198< / span > < span class = "comment" > // Break the ties randomly.< / span > < / div >
< div class = "line" > < a id = "l00199" name = "l00199" > < / a > < span class = "lineno" > 199< / span > < span class = "keywordflow" > if< / span > (!equivalent_entering_choices_.empty()) {< / div >
< div class = "line" > < a id = "l00200" name = "l00200" > < / a > < span class = "lineno" > 200< / span > equivalent_entering_choices_.push_back(*entering_col);< / div >
< div class = "line" > < a id = "l00201" name = "l00201" > < / a > < span class = "lineno" > 201< / span > *entering_col =< / div >
< div class = "line" > < a id = "l00202" name = "l00202" > < / a > < span class = "lineno" > 202< / span > equivalent_entering_choices_[std::uniform_int_distribution< int> (< / div >
< div class = "line" > < a id = "l00203" name = "l00203" > < / a > < span class = "lineno" > 203< / span > 0, equivalent_entering_choices_.size() - 1)(random_)];< / div >
< div class = "line" > < a id = "l00204" name = "l00204" > < / a > < span class = "lineno" > 204< / span > < a class = "code hl_define" href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > (< / div >
< div class = "line" > < a id = "l00205" name = "l00205" > < / a > < span class = "lineno" > 205< / span > stats_.num_perfect_ties.Add(equivalent_entering_choices_.size()));< / div >
< div class = "line" > < a id = "l00206" name = "l00206" > < / a > < span class = "lineno" > 206< / span > }< / div >
< div class = "line" > < a id = "l00207" name = "l00207" > < / a > < span class = "lineno" > 207< / span > < / div >
< div class = "line" > < a id = "l00208" name = "l00208" > < / a > < span class = "lineno" > 208< / span > < span class = "keywordflow" > if< / span > (*entering_col == < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afb755b7934d8679476e2f05a89739bcd" > kInvalidCol< / a > ) < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_status.html#a071b1d04197c0ac6e7a4d0ec0b91ff43" > Status::OK< / a > ();< / div >
< div class = "line" > < a id = "l00209" name = "l00209" > < / a > < span class = "lineno" > 209< / span > < / div >
< div class = "line" > < a id = "l00210" name = "l00210" > < / a > < span class = "lineno" > 210< / span > < span class = "comment" > // If best_coeff is small and they are potential bound flips, we can take a< / span > < / div >
< div class = "line" > < a id = "l00211" name = "l00211" > < / a > < span class = "lineno" > 211< / span > < span class = "comment" > // smaller step but use a good pivot.< / span > < / div >
< div class = "line" > < a id = "l00212" name = "l00212" > < / a > < span class = "lineno" > 212< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > pivot_limit = parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a68285ca7ffce0d4295c9ce20414eaec4" > minimum_acceptable_pivot< / a > ();< / div >
< div class = "line" > < a id = "l00213" name = "l00213" > < / a > < span class = "lineno" > 213< / span > < span class = "keywordflow" > if< / span > (best_coeff < pivot_limit & & !bound_flip_candidates-> empty()) {< / div >
< div class = "line" > < a id = "l00214" name = "l00214" > < / a > < span class = "lineno" > 214< / span > < span class = "comment" > // Note that it is okay to leave more candidate than necessary in the< / span > < / div >
< div class = "line" > < a id = "l00215" name = "l00215" > < / a > < span class = "lineno" > 215< / span > < span class = "comment" > // returned bound_flip_candidates vector.< / span > < / div >
< div class = "line" > < a id = "l00216" name = "l00216" > < / a > < span class = "lineno" > 216< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = bound_flip_candidates-> size() - 1; i > = 0; --i) {< / div >
< div class = "line" > < a id = "l00217" name = "l00217" > < / a > < span class = "lineno" > 217< / span > < span class = "keyword" > const< / span > ColIndex < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > = (*bound_flip_candidates)[i];< / div >
< div class = "line" > < a id = "l00218" name = "l00218" > < / a > < span class = "lineno" > 218< / span > < span class = "keywordflow" > if< / span > (std::abs(update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) < pivot_limit) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00219" name = "l00219" > < / a > < span class = "lineno" > 219< / span > < / div >
< div class = "line" > < a id = "l00220" name = "l00220" > < / a > < span class = "lineno" > 220< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " Used bound flip to avoid bad pivot. Before: " < / span > < < best_coeff< / div >
< div class = "line" > < a id = "l00221" name = "l00221" > < / a > < span class = "lineno" > 221< / span > < < < span class = "stringliteral" > " now: " < / span > < < std::abs(update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]);< / div >
< div class = "line" > < a id = "l00222" name = "l00222" > < / a > < span class = "lineno" > 222< / span > *entering_col = < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ;< / div >
< div class = "line" > < a id = "l00223" name = "l00223" > < / a > < span class = "lineno" > 223< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00224" name = "l00224" > < / a > < span class = "lineno" > 224< / span > }< / div >
< div class = "line" > < a id = "l00225" name = "l00225" > < / a > < span class = "lineno" > 225< / span > }< / div >
< div class = "line" > < a id = "l00226" name = "l00226" > < / a > < span class = "lineno" > 226< / span > < / div >
< div class = "line" > < a id = "l00227" name = "l00227" > < / a > < span class = "lineno" > 227< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_status.html#a071b1d04197c0ac6e7a4d0ec0b91ff43" > Status::OK< / a > ();< / div >
< div class = "line" > < a id = "l00228" name = "l00228" > < / a > < span class = "lineno" > 228< / span > }< / div >
< div class = "line" > < a id = "l00229" name = "l00229" > < / a > < span class = "lineno" > 229< / span > < / div >
< div class = "line" > < a id = "l00230" name = "l00230" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6" > 230< / a > < / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_status.html" > Status< / a > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6" > EnteringVariable::DualPhaseIChooseEnteringColumn< / a > (< / div >
< div class = "line" > < a id = "l00231" name = "l00231" > < / a > < span class = "lineno" > 231< / span > < span class = "keywordtype" > bool< / span > nothing_to_recompute, < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_update_row.html" > UpdateRow< / a > & update_row,< / div >
< div class = "line" > < a id = "l00232" name = "l00232" > < / a > < span class = "lineno" > 232< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > cost_variation, ColIndex* entering_col) {< / div >
< div class = "line" > < a id = "l00233" name = "l00233" > < / a > < span class = "lineno" > 233< / span > < a class = "code hl_define" href = "status_8h.html#ae9a90d3e61ffae636234f2c1283117d8" > GLOP_RETURN_ERROR_IF_NULL< / a > (entering_col);< / div >
< div class = "line" > < a id = "l00234" name = "l00234" > < / a > < span class = "lineno" > 234< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > DenseRow< / a > & update_coefficient = update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#a30fddb9e35865ba28420bd52538a183f" > GetCoefficients< / a > ();< / div >
< div class = "line" > < a id = "l00235" name = "l00235" > < / a > < span class = "lineno" > 235< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > DenseRow< / a > & reduced_costs = reduced_costs_-> < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_reduced_costs.html#a9f7d17ed171863f104fbb2a450f89251" > GetReducedCosts< / a > ();< / div >
< div class = "line" > < a id = "l00236" name = "l00236" > < / a > < span class = "lineno" > 236< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00237" name = "l00237" > < / a > < span class = "lineno" > 237< / span > < / div >
< div class = "line" > < a id = "l00238" name = "l00238" > < / a > < span class = "lineno" > 238< / span > < span class = "comment" > // List of breakpoints where a variable change from feasibility to< / span > < / div >
< div class = "line" > < a id = "l00239" name = "l00239" > < / a > < span class = "lineno" > 239< / span > < span class = "comment" > // infeasibility or the opposite.< / span > < / div >
< div class = "line" > < a id = "l00240" name = "l00240" > < / a > < span class = "lineno" > 240< / span > breakpoints_.clear();< / div >
< div class = "line" > < a id = "l00241" name = "l00241" > < / a > < span class = "lineno" > 241< / span > breakpoints_.reserve(update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ().size());< / div >
< div class = "line" > < a id = "l00242" name = "l00242" > < / a > < span class = "lineno" > 242< / span > < / div >
< div class = "line" > < a id = "l00243" name = "l00243" > < / a > < span class = "lineno" > 243< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > threshold = nothing_to_recompute< / div >
< div class = "line" > < a id = "l00244" name = "l00244" > < / a > < span class = "lineno" > 244< / span > ? parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a68285ca7ffce0d4295c9ce20414eaec4" > minimum_acceptable_pivot< / a > ()< / div >
< div class = "line" > < a id = "l00245" name = "l00245" > < / a > < span class = "lineno" > 245< / span > : parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a802ffefaec0732058182bb426e8edbd2" > ratio_test_zero_threshold< / a > ();< / div >
< div class = "line" > < a id = "l00246" name = "l00246" > < / a > < span class = "lineno" > 246< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > dual_feasibility_tolerance =< / div >
< div class = "line" > < a id = "l00247" name = "l00247" > < / a > < span class = "lineno" > 247< / span > reduced_costs_-> < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_reduced_costs.html#aa6a9551b792028d16dc7123c80f429d1" > GetDualFeasibilityTolerance< / a > ();< / div >
< div class = "line" > < a id = "l00248" name = "l00248" > < / a > < span class = "lineno" > 248< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > harris_tolerance =< / div >
< div class = "line" > < a id = "l00249" name = "l00249" > < / a > < span class = "lineno" > 249< / span > parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a40a2f57f5c801d77d6af1848383a4171" > harris_tolerance_ratio< / a > () * dual_feasibility_tolerance;< / div >
< div class = "line" > < a id = "l00250" name = "l00250" > < / a > < span class = "lineno" > 250< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > minimum_delta =< / div >
< div class = "line" > < a id = "l00251" name = "l00251" > < / a > < span class = "lineno" > 251< / span > parameters_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_glop_parameters.html#aad2c4edf11b93e46bae7f18ebd43301c" > degenerate_ministep_factor< / a > () * dual_feasibility_tolerance;< / div >
< div class = "line" > < a id = "l00252" name = "l00252" > < / a > < span class = "lineno" > 252< / span > < / div >
< div class = "line" > < a id = "l00253" name = "l00253" > < / a > < span class = "lineno" > 253< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1_bitset64.html" > DenseBitRow< / a > & can_decrease = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a71d4734d51e7037c043b68a74bd7857f" > GetCanDecreaseBitRow< / a > ();< / div >
< div class = "line" > < a id = "l00254" name = "l00254" > < / a > < span class = "lineno" > 254< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1_bitset64.html" > DenseBitRow< / a > & can_increase = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a6cc56ab5da3a82aa2793d18a37f422c4" > GetCanIncreaseBitRow< / a > ();< / div >
< div class = "line" > < a id = "l00255" name = "l00255" > < / a > < span class = "lineno" > 255< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > VariableTypeRow< / a > & variable_type = variables_info_.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_variables_info.html#a78146b251b30383686ec55362254cc3b" > GetTypeRow< / a > ();< / div >
< div class = "line" > < a id = "l00256" name = "l00256" > < / a > < span class = "lineno" > 256< / span > num_operations_ += 10 * update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ().size();< / div >
< div class = "line" > < a id = "l00257" name = "l00257" > < / a > < span class = "lineno" > 257< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > ColIndex < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > : update_row.< a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > GetNonZeroPositions< / a > ()) {< / div >
< div class = "line" > < a id = "l00258" name = "l00258" > < / a > < span class = "lineno" > 258< / span > < span class = "comment" > // Boxed variables shouldn' t be in the update position list because they< / span > < / div >
< div class = "line" > < a id = "l00259" name = "l00259" > < / a > < span class = "lineno" > 259< / span > < span class = "comment" > // will be dealt with afterwards by MakeBoxedVariableDualFeasible().< / span > < / div >
< div class = "line" > < a id = "l00260" name = "l00260" > < / a > < span class = "lineno" > 260< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (variable_type[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ], < a class = "code hl_enumvalue" href = "namespaceoperations__research_1_1glop.html#a4452e21ffb34da40470f1e0791800027a62e32b9a6efb029208f576ee123b459f" > VariableType::UPPER_AND_LOWER_BOUNDED< / a > );< / div >
< div class = "line" > < a id = "l00261" name = "l00261" > < / a > < span class = "lineno" > 261< / span > < / div >
< div class = "line" > < a id = "l00262" name = "l00262" > < / a > < span class = "lineno" > 262< / span > < span class = "comment" > // Fixed variable shouldn' t be in the update position list.< / span > < / div >
< div class = "line" > < a id = "l00263" name = "l00263" > < / a > < span class = "lineno" > 263< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (variable_type[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ], < a class = "code hl_enumvalue" href = "namespaceoperations__research_1_1glop.html#a4452e21ffb34da40470f1e0791800027aaa56837dd3f2917e1e13f3173b596103" > VariableType::FIXED_VARIABLE< / a > );< / div >
< div class = "line" > < a id = "l00264" name = "l00264" > < / a > < span class = "lineno" > 264< / span > < / div >
< div class = "line" > < a id = "l00265" name = "l00265" > < / a > < span class = "lineno" > 265< / span > < span class = "comment" > // Skip if the coeff is too small to be a numerically stable pivot.< / span > < / div >
< div class = "line" > < a id = "l00266" name = "l00266" > < / a > < span class = "lineno" > 266< / span > < span class = "keywordflow" > if< / span > (std::abs(update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) < threshold) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00267" name = "l00267" > < / a > < span class = "lineno" > 267< / span > < / div >
< div class = "line" > < a id = "l00268" name = "l00268" > < / a > < span class = "lineno" > 268< / span > < span class = "comment" > // We will add ratio * coeff to this column. cost_variation makes sure< / span > < / div >
< div class = "line" > < a id = "l00269" name = "l00269" > < / a > < span class = "lineno" > 269< / span > < span class = "comment" > // the leaving variable will be dual-feasible (its update coeff is< / span > < / div >
< div class = "line" > < a id = "l00270" name = "l00270" > < / a > < span class = "lineno" > 270< / span > < span class = "comment" > // sign(cost_variation) * 1.0).< / span > < / div >
< div class = "line" > < a id = "l00271" name = "l00271" > < / a > < span class = "lineno" > 271< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00272" name = "l00272" > < / a > < span class = "lineno" > 272< / span > < span class = "comment" > // TODO(user): This is the same in DualChooseEnteringColumn(), remove< / span > < / div >
< div class = "line" > < a id = "l00273" name = "l00273" > < / a > < span class = "lineno" > 273< / span > < span class = "comment" > // duplication?< / span > < / div >
< div class = "line" > < a id = "l00274" name = "l00274" > < / a > < span class = "lineno" > 274< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > coeff = (cost_variation > 0.0) ? update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]< / div >
< div class = "line" > < a id = "l00275" name = "l00275" > < / a > < span class = "lineno" > 275< / span > : -update_coefficient[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ];< / div >
< div class = "line" > < a id = "l00276" name = "l00276" > < / a > < span class = "lineno" > 276< / span > < / div >
< div class = "line" > < a id = "l00277" name = "l00277" > < / a > < span class = "lineno" > 277< / span > < span class = "comment" > // Only proceed if there is a transition, note that if reduced_costs[col]< / span > < / div >
< div class = "line" > < a id = "l00278" name = "l00278" > < / a > < span class = "lineno" > 278< / span > < span class = "comment" > // is close to zero, then the variable is counted as dual-feasible.< / span > < / div >
< div class = "line" > < a id = "l00279" name = "l00279" > < / a > < span class = "lineno" > 279< / span > < span class = "keywordflow" > if< / span > (std::abs(reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) < = dual_feasibility_tolerance) {< / div >
< div class = "line" > < a id = "l00280" name = "l00280" > < / a > < span class = "lineno" > 280< / span > < span class = "comment" > // Continue if the variation goes in the dual-feasible direction.< / span > < / div >
< div class = "line" > < a id = "l00281" name = "l00281" > < / a > < span class = "lineno" > 281< / span > < span class = "keywordflow" > if< / span > (coeff > 0 & & !can_decrease.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > )) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00282" name = "l00282" > < / a > < span class = "lineno" > 282< / span > < span class = "keywordflow" > if< / span > (coeff < 0 & & !can_increase.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > )) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00283" name = "l00283" > < / a > < span class = "lineno" > 283< / span > < / div >
< div class = "line" > < a id = "l00284" name = "l00284" > < / a > < span class = "lineno" > 284< / span > < span class = "comment" > // For an already dual-infeasible variable, we allow to push it until< / span > < / div >
< div class = "line" > < a id = "l00285" name = "l00285" > < / a > < span class = "lineno" > 285< / span > < span class = "comment" > // the harris_tolerance. But if it is past that or close to it, we also< / span > < / div >
< div class = "line" > < a id = "l00286" name = "l00286" > < / a > < span class = "lineno" > 286< / span > < span class = "comment" > // always enforce a minimum push.< / span > < / div >
< div class = "line" > < a id = "l00287" name = "l00287" > < / a > < span class = "lineno" > 287< / span > < span class = "keywordflow" > if< / span > (coeff * reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] > 0.0) {< / div >
< div class = "line" > < a id = "l00288" name = "l00288" > < / a > < span class = "lineno" > 288< / span > breakpoints_.push_back(ColWithRatio(< / div >
< div class = "line" > < a id = "l00289" name = "l00289" > < / a > < span class = "lineno" > 289< / span > < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ,< / div >
< div class = "line" > < a id = "l00290" name = "l00290" > < / a > < span class = "lineno" > 290< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (minimum_delta,< / div >
< div class = "line" > < a id = "l00291" name = "l00291" > < / a > < span class = "lineno" > 291< / span > harris_tolerance - std::abs(reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ])),< / div >
< div class = "line" > < a id = "l00292" name = "l00292" > < / a > < span class = "lineno" > 292< / span > std::abs(coeff)));< / div >
< div class = "line" > < a id = "l00293" name = "l00293" > < / a > < span class = "lineno" > 293< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00294" name = "l00294" > < / a > < span class = "lineno" > 294< / span > }< / div >
< div class = "line" > < a id = "l00295" name = "l00295" > < / a > < span class = "lineno" > 295< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00296" name = "l00296" > < / a > < span class = "lineno" > 296< / span > < span class = "comment" > // If the two are of the same sign, there is no transition, skip.< / span > < / div >
< div class = "line" > < a id = "l00297" name = "l00297" > < / a > < span class = "lineno" > 297< / span > < span class = "keywordflow" > if< / span > (coeff * reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ] > 0.0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00298" name = "l00298" > < / a > < span class = "lineno" > 298< / span > }< / div >
< div class = "line" > < a id = "l00299" name = "l00299" > < / a > < span class = "lineno" > 299< / span > < / div >
< div class = "line" > < a id = "l00300" name = "l00300" > < / a > < span class = "lineno" > 300< / span > < span class = "comment" > // We are sure there is a transition, add it to the set of breakpoints.< / span > < / div >
< div class = "line" > < a id = "l00301" name = "l00301" > < / a > < span class = "lineno" > 301< / span > breakpoints_.push_back(ColWithRatio(< / div >
< div class = "line" > < a id = "l00302" name = "l00302" > < / a > < span class = "lineno" > 302< / span > < a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > , std::abs(reduced_costs[< a class = "code hl_variable" href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > ]) + harris_tolerance, std::abs(coeff)));< / div >
< div class = "line" > < a id = "l00303" name = "l00303" > < / a > < span class = "lineno" > 303< / span > }< / div >
< div class = "line" > < a id = "l00304" name = "l00304" > < / a > < span class = "lineno" > 304< / span > < / div >
< div class = "line" > < a id = "l00305" name = "l00305" > < / a > < span class = "lineno" > 305< / span > < span class = "comment" > // Process the breakpoints in priority order.< / span > < / div >
< div class = "line" > < a id = "l00306" name = "l00306" > < / a > < span class = "lineno" > 306< / span > std::make_heap(breakpoints_.begin(), breakpoints_.end());< / div >
< div class = "line" > < a id = "l00307" name = "l00307" > < / a > < span class = "lineno" > 307< / span > < / div >
< div class = "line" > < a id = "l00308" name = "l00308" > < / a > < span class = "lineno" > 308< / span > < span class = "comment" > // Because of our priority queue, it is easy to choose a sub-optimal step to< / span > < / div >
< div class = "line" > < a id = "l00309" name = "l00309" > < / a > < span class = "lineno" > 309< / span > < span class = "comment" > // have a stable pivot. The pivot with the highest magnitude and that reduces< / span > < / div >
< div class = "line" > < a id = "l00310" name = "l00310" > < / a > < span class = "lineno" > 310< / span > < span class = "comment" > // the infeasibility the most is chosen.< / span > < / div >
< div class = "line" > < a id = "l00311" name = "l00311" > < / a > < span class = "lineno" > 311< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > pivot_magnitude = 0.0;< / div >
< div class = "line" > < a id = "l00312" name = "l00312" > < / a > < span class = "lineno" > 312< / span > < / div >
< div class = "line" > < a id = "l00313" name = "l00313" > < / a > < span class = "lineno" > 313< / span > < span class = "comment" > // Select the last breakpoint that still improves the infeasibility and has a< / span > < / div >
< div class = "line" > < a id = "l00314" name = "l00314" > < / a > < span class = "lineno" > 314< / span > < span class = "comment" > // numerically stable pivot.< / span > < / div >
< div class = "line" > < a id = "l00315" name = "l00315" > < / a > < span class = "lineno" > 315< / span > *entering_col = < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afb755b7934d8679476e2f05a89739bcd" > kInvalidCol< / a > ;< / div >
< div class = "line" > < a id = "l00316" name = "l00316" > < / a > < span class = "lineno" > 316< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > step = -1.0;< / div >
< div class = "line" > < a id = "l00317" name = "l00317" > < / a > < span class = "lineno" > 317< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > Fractional< / a > improvement = std::abs(cost_variation);< / div >
< div class = "line" > < a id = "l00318" name = "l00318" > < / a > < span class = "lineno" > 318< / span > < span class = "keywordflow" > while< / span > (!breakpoints_.empty()) {< / div >
< div class = "line" > < a id = "l00319" name = "l00319" > < / a > < span class = "lineno" > 319< / span > < span class = "keyword" > const< / span > ColWithRatio top = breakpoints_.front();< / div >
< div class = "line" > < a id = "l00320" name = "l00320" > < / a > < span class = "lineno" > 320< / span > < / div >
< div class = "line" > < a id = "l00321" name = "l00321" > < / a > < span class = "lineno" > 321< / span > < span class = "comment" > // We keep the greatest coeff_magnitude for the same ratio.< / span > < / div >
< div class = "line" > < a id = "l00322" name = "l00322" > < / a > < span class = "lineno" > 322< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (top.ratio > step ||< / div >
< div class = "line" > < a id = "l00323" name = "l00323" > < / a > < span class = "lineno" > 323< / span > (top.ratio == step & & top.coeff_magnitude < = pivot_magnitude));< / div >
< div class = "line" > < a id = "l00324" name = "l00324" > < / a > < span class = "lineno" > 324< / span > < span class = "keywordflow" > if< / span > (top.ratio > step & & top.coeff_magnitude > = pivot_magnitude) {< / div >
< div class = "line" > < a id = "l00325" name = "l00325" > < / a > < span class = "lineno" > 325< / span > *entering_col = top.col;< / div >
< div class = "line" > < a id = "l00326" name = "l00326" > < / a > < span class = "lineno" > 326< / span > step = top.ratio;< / div >
< div class = "line" > < a id = "l00327" name = "l00327" > < / a > < span class = "lineno" > 327< / span > pivot_magnitude = top.coeff_magnitude;< / div >
< div class = "line" > < a id = "l00328" name = "l00328" > < / a > < span class = "lineno" > 328< / span > }< / div >
< div class = "line" > < a id = "l00329" name = "l00329" > < / a > < span class = "lineno" > 329< / span > improvement -= top.coeff_magnitude;< / div >
< div class = "line" > < a id = "l00330" name = "l00330" > < / a > < span class = "lineno" > 330< / span > < / div >
< div class = "line" > < a id = "l00331" name = "l00331" > < / a > < span class = "lineno" > 331< / span > < span class = "comment" > // If the variable is free, then not only do we loose the infeasibility< / span > < / div >
< div class = "line" > < a id = "l00332" name = "l00332" > < / a > < span class = "lineno" > 332< / span > < span class = "comment" > // improvment, we also render it worse if we keep going in the same< / span > < / div >
< div class = "line" > < a id = "l00333" name = "l00333" > < / a > < span class = "lineno" > 333< / span > < span class = "comment" > // direction.< / span > < / div >
< div class = "line" > < a id = "l00334" name = "l00334" > < / a > < span class = "lineno" > 334< / span > < span class = "keywordflow" > if< / span > (can_decrease.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (top.col) & & can_increase.< a class = "code hl_function" href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > IsSet< / a > (top.col) & & < / div >
< div class = "line" > < a id = "l00335" name = "l00335" > < / a > < span class = "lineno" > 335< / span > std::abs(reduced_costs[top.col]) > threshold) {< / div >
< div class = "line" > < a id = "l00336" name = "l00336" > < / a > < span class = "lineno" > 336< / span > improvement -= top.coeff_magnitude;< / div >
< div class = "line" > < a id = "l00337" name = "l00337" > < / a > < span class = "lineno" > 337< / span > }< / div >
< div class = "line" > < a id = "l00338" name = "l00338" > < / a > < span class = "lineno" > 338< / span > < / div >
< div class = "line" > < a id = "l00339" name = "l00339" > < / a > < span class = "lineno" > 339< / span > < span class = "keywordflow" > if< / span > (improvement < = 0.0) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00340" name = "l00340" > < / a > < span class = "lineno" > 340< / span > std::pop_heap(breakpoints_.begin(), breakpoints_.end());< / div >
< div class = "line" > < a id = "l00341" name = "l00341" > < / a > < span class = "lineno" > 341< / span > breakpoints_.pop_back();< / div >
< div class = "line" > < a id = "l00342" name = "l00342" > < / a > < span class = "lineno" > 342< / span > }< / div >
< div class = "line" > < a id = "l00343" name = "l00343" > < / a > < span class = "lineno" > 343< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_status.html#a071b1d04197c0ac6e7a4d0ec0b91ff43" > Status::OK< / a > ();< / div >
< div class = "line" > < a id = "l00344" name = "l00344" > < / a > < span class = "lineno" > 344< / span > }< / div >
< div class = "line" > < a id = "l00345" name = "l00345" > < / a > < span class = "lineno" > 345< / span > < / div >
< div class = "line" > < a id = "l00346" name = "l00346" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea" > 346< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea" > EnteringVariable::SetParameters< / a > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1glop_1_1_glop_parameters.html" > GlopParameters< / a > & < a class = "code hl_variable" href = "cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219" > parameters< / a > ) {< / div >
< div class = "line" > < a id = "l00347" name = "l00347" > < / a > < span class = "lineno" > 347< / span > parameters_ = < a class = "code hl_variable" href = "cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219" > parameters< / a > ;< / div >
< div class = "line" > < a id = "l00348" name = "l00348" > < / a > < span class = "lineno" > 348< / span > }< / div >
< div class = "line" > < a id = "l00349" name = "l00349" > < / a > < span class = "lineno" > 349< / span > < / div >
< div class = "line" > < a id = "l00350" name = "l00350" > < / a > < span class = "lineno" > 350< / span > } < span class = "comment" > // namespace glop< / span > < / div >
< div class = "line" > < a id = "l00351" name = "l00351" > < / a > < span class = "lineno" > 351< / span > } < span class = "comment" > // namespace operations_research< / span > < / div >
< div class = "ttc" id = "aalldiff__cst_8cc_html_a26e6db9bcc64b584051ecc28171ed11f" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > < / div > < div class = "ttdeci" > int64_t max< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00140" > alldiff_cst.cc:140< / a > < / div > < / div >
< div class = "ttc" id = "aalldiff__cst_8cc_html_ad10edae0a852d72fb76afb1c77735045" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > < / div > < div class = "ttdeci" > int64_t min< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00139" > alldiff_cst.cc:139< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a46e69120fbd3b36e6960e096d23b66f0" > < div class = "ttname" > < a href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > < / div > < div class = "ttdeci" > #define DCHECK_NE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00887" > base/logging.h:887< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > < / div > < div class = "ttdeci" > #define DCHECK(condition)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00885" > base/logging.h:885< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_afcaa7cadd41741bb855c2ada1d2ef927" > < div class = "ttname" > < a href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > < / div > < div class = "ttdeci" > #define VLOG(verboselevel)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00979" > base/logging.h:979< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_bitset64_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_bitset64.html" > operations_research::Bitset64< ColIndex > < / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_bitset64_html_aa454a4099ee887726b8f5b4a8ed1a81d" > < div class = "ttname" > < a href = "classoperations__research_1_1_bitset64.html#aa454a4099ee887726b8f5b4a8ed1a81d" > operations_research::Bitset64::IsSet< / a > < / div > < div class = "ttdeci" > bool IsSet(IndexType i) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00485" > bitset.h:485< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_entering_variable_html_a2dbed549d25654617b466ea86d51fa51" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51" > operations_research::glop::EnteringVariable::EnteringVariable< / a > < / div > < div class = "ttdeci" > EnteringVariable(const VariablesInfo & variables_info, absl::BitGenRef random, ReducedCosts *reduced_costs)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "entering__variable_8cc_source.html#l00025" > entering_variable.cc:25< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_entering_variable_html_aa271bff260917fd62d0d7509b7118ad6" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6" > operations_research::glop::EnteringVariable::DualPhaseIChooseEnteringColumn< / a > < / div > < div class = "ttdeci" > ABSL_MUST_USE_RESULT Status DualPhaseIChooseEnteringColumn(bool nothing_to_recompute, const UpdateRow & update_row, Fractional cost_variation, ColIndex *entering_col)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "entering__variable_8cc_source.html#l00230" > entering_variable.cc:230< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_entering_variable_html_ae7202d055b6b172a8a1da4f5b136f9ea" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea" > operations_research::glop::EnteringVariable::SetParameters< / a > < / div > < div class = "ttdeci" > void SetParameters(const GlopParameters & parameters)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "entering__variable_8cc_source.html#l00346" > entering_variable.cc:346< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_entering_variable_html_afaf135d40c257d0f1a49aa8e795c9b03" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03" > operations_research::glop::EnteringVariable::DualChooseEnteringColumn< / a > < / div > < div class = "ttdeci" > ABSL_MUST_USE_RESULT Status DualChooseEnteringColumn(bool nothing_to_recompute, const UpdateRow & update_row, Fractional cost_variation, std::vector< ColIndex > *bound_flip_candidates, ColIndex *entering_col)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "entering__variable_8cc_source.html#l00033" > entering_variable.cc:33< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_glop_parameters_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_glop_parameters.html" > operations_research::glop::GlopParameters< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "parameters_8pb_8h_source.html#l00194" > parameters.pb.h:195< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_glop_parameters_html_a40a2f57f5c801d77d6af1848383a4171" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a40a2f57f5c801d77d6af1848383a4171" > operations_research::glop::GlopParameters::harris_tolerance_ratio< / a > < / div > < div class = "ttdeci" > double harris_tolerance_ratio() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "parameters_8pb_8h_source.html#l01572" > parameters.pb.h:1572< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_glop_parameters_html_a68285ca7ffce0d4295c9ce20414eaec4" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a68285ca7ffce0d4295c9ce20414eaec4" > operations_research::glop::GlopParameters::minimum_acceptable_pivot< / a > < / div > < div class = "ttdeci" > double minimum_acceptable_pivot() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "parameters_8pb_8h_source.html#l01628" > parameters.pb.h:1628< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_glop_parameters_html_a802ffefaec0732058182bb426e8edbd2" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_glop_parameters.html#a802ffefaec0732058182bb426e8edbd2" > operations_research::glop::GlopParameters::ratio_test_zero_threshold< / a > < / div > < div class = "ttdeci" > double ratio_test_zero_threshold() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "parameters_8pb_8h_source.html#l01544" > parameters.pb.h:1544< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_glop_parameters_html_aad2c4edf11b93e46bae7f18ebd43301c" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_glop_parameters.html#aad2c4edf11b93e46bae7f18ebd43301c" > operations_research::glop::GlopParameters::degenerate_ministep_factor< / a > < / div > < div class = "ttdeci" > double degenerate_ministep_factor() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "parameters_8pb_8h_source.html#l02499" > parameters.pb.h:2499< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_reduced_costs_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_reduced_costs.html" > operations_research::glop::ReducedCosts< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "reduced__costs_8h_source.html#l00049" > reduced_costs.h:49< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_reduced_costs_html_a9f7d17ed171863f104fbb2a450f89251" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_reduced_costs.html#a9f7d17ed171863f104fbb2a450f89251" > operations_research::glop::ReducedCosts::GetReducedCosts< / a > < / div > < div class = "ttdeci" > const DenseRow & GetReducedCosts()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "reduced__costs_8cc_source.html#l00319" > reduced_costs.cc:319< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_reduced_costs_html_aa6a9551b792028d16dc7123c80f429d1" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_reduced_costs.html#aa6a9551b792028d16dc7123c80f429d1" > operations_research::glop::ReducedCosts::GetDualFeasibilityTolerance< / a > < / div > < div class = "ttdeci" > Fractional GetDualFeasibilityTolerance() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "reduced__costs_8h_source.html#l00177" > reduced_costs.h:177< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_status_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_status.html" > operations_research::glop::Status< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "status_8h_source.html#l00024" > status.h:24< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_status_html_a071b1d04197c0ac6e7a4d0ec0b91ff43" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_status.html#a071b1d04197c0ac6e7a4d0ec0b91ff43" > operations_research::glop::Status::OK< / a > < / div > < div class = "ttdeci" > static const Status OK()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "status_8h_source.html#l00054" > status.h:54< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_strict_i_t_i_vector_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html" > operations_research::glop::StrictITIVector< ColIndex, Fractional > < / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_update_row_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_update_row.html" > operations_research::glop::UpdateRow< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "update__row_8h_source.html#l00040" > update_row.h:40< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_update_row_html_a30fddb9e35865ba28420bd52538a183f" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_update_row.html#a30fddb9e35865ba28420bd52538a183f" > operations_research::glop::UpdateRow::GetCoefficients< / a > < / div > < div class = "ttdeci" > const DenseRow & GetCoefficients() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "update__row_8cc_source.html#l00165" > update_row.cc:165< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_update_row_html_af8e957f1c8389089554ded7bd2b7b45f" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f" > operations_research::glop::UpdateRow::GetNonZeroPositions< / a > < / div > < div class = "ttdeci" > const ColIndexVector & GetNonZeroPositions() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "update__row_8cc_source.html#l00167" > update_row.cc:167< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html" > operations_research::glop::VariablesInfo< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8h_source.html#l00055" > variables_info.h:55< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html_a505af340486fcf70ee83abb32e31a628" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html#a505af340486fcf70ee83abb32e31a628" > operations_research::glop::VariablesInfo::GetNonBasicBoxedVariables< / a > < / div > < div class = "ttdeci" > const DenseBitRow & GetNonBasicBoxedVariables() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8cc_source.html#l00312" > variables_info.cc:312< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html_a611fb1da73c33e2716b380db980fa825" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html#a611fb1da73c33e2716b380db980fa825" > operations_research::glop::VariablesInfo::GetBoundDifference< / a > < / div > < div class = "ttdeci" > Fractional GetBoundDifference(ColIndex col) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8h_source.html#l00141" > variables_info.h:141< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html_a6cc56ab5da3a82aa2793d18a37f422c4" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html#a6cc56ab5da3a82aa2793d18a37f422c4" > operations_research::glop::VariablesInfo::GetCanIncreaseBitRow< / a > < / div > < div class = "ttdeci" > const DenseBitRow & GetCanIncreaseBitRow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8cc_source.html#l00294" > variables_info.cc:294< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html_a71d4734d51e7037c043b68a74bd7857f" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html#a71d4734d51e7037c043b68a74bd7857f" > operations_research::glop::VariablesInfo::GetCanDecreaseBitRow< / a > < / div > < div class = "ttdeci" > const DenseBitRow & GetCanDecreaseBitRow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8cc_source.html#l00298" > variables_info.cc:298< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1glop_1_1_variables_info_html_a78146b251b30383686ec55362254cc3b" > < div class = "ttname" > < a href = "classoperations__research_1_1glop_1_1_variables_info.html#a78146b251b30383686ec55362254cc3b" > operations_research::glop::VariablesInfo::GetTypeRow< / a > < / div > < div class = "ttdeci" > const VariableTypeRow & GetTypeRow() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variables__info_8cc_source.html#l00286" > variables_info.cc:286< / a > < / div > < / div >
< div class = "ttc" id = "acp__model__fz__solver_8cc_html_a10a1eab179b472c030bdc2a2efef7219" > < div class = "ttname" > < a href = "cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219" > parameters< / a > < / div > < div class = "ttdeci" > SatParameters parameters< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cp__model__fz__solver_8cc_source.html#l00116" > cp_model_fz_solver.cc:116< / a > < / div > < / div >
< div class = "ttc" id = "aentering__variable_8h_html" > < div class = "ttname" > < a href = "entering__variable_8h.html" > entering_variable.h< / a > < / div > < / div >
< div class = "ttc" id = "alp__data_2lp__utils_8h_html" > < div class = "ttname" > < a href = "lp__data_2lp__utils_8h.html" > lp_utils.h< / a > < / div > < / div >
< div class = "ttc" id = "amarkowitz_8cc_html_aa9d6c98fdf8d89b0e2321fda02adc82c" > < div class = "ttname" > < a href = "markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c" > col< / a > < / div > < div class = "ttdeci" > ColIndex col< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "markowitz_8cc_source.html#l00183" > markowitz.cc:183< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_a4452e21ffb34da40470f1e0791800027a62e32b9a6efb029208f576ee123b459f" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#a4452e21ffb34da40470f1e0791800027a62e32b9a6efb029208f576ee123b459f" > operations_research::glop::VariableType::UPPER_AND_LOWER_BOUNDED< / a > < / div > < div class = "ttdeci" > @ UPPER_AND_LOWER_BOUNDED< / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_a4452e21ffb34da40470f1e0791800027aaa56837dd3f2917e1e13f3173b596103" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#a4452e21ffb34da40470f1e0791800027aaa56837dd3f2917e1e13f3173b596103" > operations_research::glop::VariableType::FIXED_VARIABLE< / a > < / div > < div class = "ttdeci" > @ FIXED_VARIABLE< / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_a733947145e3e1631165b618b05c9ccb7" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7" > operations_research::glop::Fractional< / a > < / div > < div class = "ttdeci" > double Fractional< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "lp__types_8h_source.html#l00078" > lp_types.h:78< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_afb755b7934d8679476e2f05a89739bcd" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#afb755b7934d8679476e2f05a89739bcd" > operations_research::glop::kInvalidCol< / a > < / div > < div class = "ttdeci" > const ColIndex kInvalidCol(-1)< / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html" > < div class = "ttname" > < a href = "namespaceoperations__research.html" > operations_research< / a > < / div > < div class = "ttdoc" > Collection of objects used to extend the Constraint Solver library.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "dense__doubly__linked__list_8h_source.html#l00021" > dense_doubly_linked_list.h:21< / a > < / div > < / div >
< div class = "ttc" id = "aport_2proto__utils_8h_html" > < div class = "ttname" > < a href = "port_2proto__utils_8h.html" > proto_utils.h< / a > < / div > < / div >
< div class = "ttc" id = "astats_8h_html_a3c3e6b102f0d91c523099325c98e1887" > < div class = "ttname" > < a href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > < / div > < div class = "ttdeci" > #define IF_STATS_ENABLED(instructions)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00437" > stats.h:437< / a > < / div > < / div >
< div class = "ttc" id = "astats_8h_html_a9995704aaaf45fc21e08c847551a8d04" > < div class = "ttname" > < a href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > < / div > < div class = "ttdeci" > #define SCOPED_TIME_STAT(stats)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00438" > stats.h:438< / a > < / div > < / div >
< div class = "ttc" id = "astatus_8h_html_ae9a90d3e61ffae636234f2c1283117d8" > < div class = "ttname" > < a href = "status_8h.html#ae9a90d3e61ffae636234f2c1283117d8" > GLOP_RETURN_ERROR_IF_NULL< / a > < / div > < div class = "ttdeci" > #define GLOP_RETURN_ERROR_IF_NULL(arg)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "status_8h_source.html#l00085" > status.h:85< / a > < / div > < / div >
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