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< a href = "fp__utils_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 = "l00011" name = "l00011" > < / a > < span class = "lineno" > 11< / span > < span class = "comment" > // See the License for the specific language governing permissions and< / span > < / div >
< 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 = "fp__utils_8h.html" > ortools/util/fp_utils.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 < limits.h> < / span > < / div >
< div class = "line" > < a id = "l00017" name = "l00017" > < / a > < span class = "lineno" > 17< / span > < span class = "preprocessor" > #include < stdint.h> < / span > < / div >
< div class = "line" > < a id = "l00018" name = "l00018" > < / a > < span class = "lineno" > 18< / span > < / div >
< div class = "line" > < a id = "l00019" name = "l00019" > < / a > < span class = "lineno" > 19< / span > < span class = "preprocessor" > #include < algorithm> < / span > < / div >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "preprocessor" > #include < cmath> < / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < span class = "preprocessor" > #include < limits> < / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "preprocessor" > #include < utility> < / span > < / div >
< div class = "line" > < a id = "l00023" name = "l00023" > < / a > < span class = "lineno" > 23< / span > < span class = "preprocessor" > #include < vector> < / span > < / 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" > 25< / span > < span class = "preprocessor" > #include " absl/base/casts.h" < / span > < / div >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > 26< / span > < span class = "preprocessor" > #include " absl/base/internal/endian.h" < / span > < / div >
< div class = "line" > < a id = "l00027" name = "l00027" > < / a > < span class = "lineno" > 27< / span > < span class = "preprocessor" > #include " < a class = "code" href = "integral__types_8h.html" > ortools/base/integral_types.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00028" name = "l00028" > < / a > < span class = "lineno" > 28< / span > < span class = "preprocessor" > #include " < a class = "code" href = "base_2logging_8h.html" > ortools/base/logging.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00029" name = "l00029" > < / a > < span class = "lineno" > 29< / span > < span class = "preprocessor" > #include " < a class = "code" href = "bitset_8h.html" > ortools/util/bitset.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00030" name = "l00030" > < / a > < span class = "lineno" > 30< / span > < / div >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > < span class = "keyword" > namespace < / span > < a class = "code hl_namespace" href = "namespaceoperations__research.html" > operations_research< / a > {< / 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" > 33< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l00034" name = "l00034" > < / a > < span class = "lineno" > 34< / span > < / div >
< div class = "line" > < a id = "l00035" name = "l00035" > < / a > < span class = "lineno" > 35< / span > < span class = "keywordtype" > void< / span > ReorderAndCapTerms(< span class = "keywordtype" > double< / span > * < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > , < span class = "keywordtype" > double< / span > * < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > ) {< / div >
< div class = "line" > < a id = "l00036" name = "l00036" > < / a > < span class = "lineno" > 36< / span > < span class = "keywordflow" > if< / span > (*< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > > *< a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > ) < a class = "code hl_function" href = "namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2" > std::swap< / a > (*< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > , *< a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > );< / div >
< div class = "line" > < a id = "l00037" name = "l00037" > < / a > < span class = "lineno" > 37< / span > < span class = "keywordflow" > if< / span > (*< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > > 0.0) *< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > = 0.0;< / div >
< div class = "line" > < a id = "l00038" name = "l00038" > < / a > < span class = "lineno" > 38< / span > < span class = "keywordflow" > if< / span > (*< a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > < 0.0) *< a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > = 0.0;< / div >
< div class = "line" > < a id = "l00039" name = "l00039" > < / a > < span class = "lineno" > 39< / span > }< / div >
< div class = "line" > < a id = "l00040" name = "l00040" > < / a > < span class = "lineno" > 40< / span > < / div >
< div class = "line" > < a id = "l00041" name = "l00041" > < / a > < span class = "lineno" > 41< / span > < span class = "keyword" > template< / span > < < span class = "keywordtype" > bool< / span > use_bounds> < / div >
< div class = "line" > < a id = "l00042" name = "l00042" > < / a > < span class = "lineno" > 42< / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a46f21c3da23685e58b31d880b2144458" > ComputeScalingErrors< / a > (< span class = "keyword" > const< / span > std::vector< double> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l00043" name = "l00043" > < / a > < span class = "lineno" > 43< / span > < span class = "keyword" > const< / span > std::vector< double> & lb,< / div >
< div class = "line" > < a id = "l00044" name = "l00044" > < / a > < span class = "lineno" > 44< / span > < span class = "keyword" > const< / span > std::vector< double> & ub, < span class = "keywordtype" > double< / span > scaling_factor,< / div >
< div class = "line" > < a id = "l00045" name = "l00045" > < / a > < span class = "lineno" > 45< / span > < span class = "keywordtype" > double< / span > * < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > ,< / div >
< div class = "line" > < a id = "l00046" name = "l00046" > < / a > < span class = "lineno" > 46< / span > < span class = "keywordtype" > double< / span > * max_scaled_sum_error) {< / div >
< div class = "line" > < a id = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < span class = "keywordtype" > double< / span > max_error = 0.0;< / div >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > 48< / span > < span class = "keywordtype" > double< / span > min_error = 0.0;< / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > *< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > = 0.0;< / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > size = < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > .size();< / div >
< div class = "line" > < a id = "l00051" name = "l00051" > < / a > < span class = "lineno" > 51< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l00052" name = "l00052" > < / a > < span class = "lineno" > 52< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > x = < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > [i];< / div >
< div class = "line" > < a id = "l00053" name = "l00053" > < / a > < span class = "lineno" > 53< / span > < span class = "keywordflow" > if< / span > (x == 0.0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00054" name = "l00054" > < / a > < span class = "lineno" > 54< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > scaled = x * scaling_factor;< / div >
< div class = "line" > < a id = "l00055" name = "l00055" > < / a > < span class = "lineno" > 55< / span > < / div >
< div class = "line" > < a id = "l00056" name = "l00056" > < / a > < span class = "lineno" > 56< / span > < span class = "keywordflow" > if< / span > (scaled == 0.0) {< / div >
< div class = "line" > < a id = "l00057" name = "l00057" > < / a > < span class = "lineno" > 57< / span > *< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > = std::numeric_limits< double> ::infinity();< / div >
< div class = "line" > < a id = "l00058" name = "l00058" > < / a > < span class = "lineno" > 58< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00059" name = "l00059" > < / a > < span class = "lineno" > 59< / span > *< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (< / div >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > *< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > , std::abs(std::round(scaled) / scaled - 1));< / div >
< div class = "line" > < a id = "l00061" name = "l00061" > < / a > < span class = "lineno" > 61< / span > }< / div >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > 62< / span > < / div >
< div class = "line" > < a id = "l00063" name = "l00063" > < / a > < span class = "lineno" > 63< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > error = std::round(scaled) - scaled;< / div >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > error_lb = (use_bounds ? error * lb[i] : -error);< / div >
< div class = "line" > < a id = "l00065" name = "l00065" > < / a > < span class = "lineno" > 65< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > error_ub = (use_bounds ? error * ub[i] : error);< / div >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > max_error += < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (error_lb, error_ub);< / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > min_error += < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (error_lb, error_ub);< / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > }< / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > *max_scaled_sum_error = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (std::abs(max_error), std::abs(min_error));< / div >
< div class = "line" > < a id = "l00070" name = "l00070" > < / a > < span class = "lineno" > 70< / span > }< / div >
< div class = "line" > < a id = "l00071" name = "l00071" > < / a > < span class = "lineno" > 71< / span > < / div >
< div class = "line" > < a id = "l00072" name = "l00072" > < / a > < span class = "lineno" > 72< / span > < span class = "keyword" > template< / span > < < span class = "keywordtype" > bool< / span > use_bounds> < / div >
< div class = "line" > < a id = "l00073" name = "l00073" > < / a > < span class = "lineno" > 73< / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#aae3359f1c2367d44e5cf9be5d5abc89f" > GetBestScalingOfDoublesToInt64< / a > (< span class = "keyword" > const< / span > std::vector< double> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l00074" name = "l00074" > < / a > < span class = "lineno" > 74< / span > < span class = "keyword" > const< / span > std::vector< double> & lb,< / div >
< div class = "line" > < a id = "l00075" name = "l00075" > < / a > < span class = "lineno" > 75< / span > < span class = "keyword" > const< / span > std::vector< double> & ub,< / div >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > int64_t max_absolute_sum,< / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > < span class = "keywordtype" > double< / span > * scaling_factor) {< / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "namespaceoperations__research_1_1glop.html#af9a790b7e8c5b0c6d55b336177378e78" > kInfinity< / a > = std::numeric_limits< double> ::infinity();< / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > < / div >
< div class = "line" > < a id = "l00080" name = "l00080" > < / a > < span class = "lineno" > 80< / span > < span class = "comment" > // We start by initializing the returns value to the " error" state.< / span > < / div >
< div class = "line" > < a id = "l00081" name = "l00081" > < / a > < span class = "lineno" > 81< / span > *scaling_factor = 0;< / div >
< div class = "line" > < a id = "l00082" name = "l00082" > < / a > < span class = "lineno" > 82< / span > < / div >
< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > 83< / span > < span class = "comment" > // Abort in the " error" state if max_absolute_sum doesn' t make sense.< / span > < / div >
< div class = "line" > < a id = "l00084" name = "l00084" > < / a > < span class = "lineno" > 84< / span > < span class = "keywordflow" > if< / span > (max_absolute_sum < 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > 85< / span > < / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > < span class = "comment" > // Our scaling scaling_factor will be 2^factor_exponent.< / span > < / div >
< div class = "line" > < a id = "l00087" name = "l00087" > < / a > < span class = "lineno" > 87< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00088" name = "l00088" > < / a > < span class = "lineno" > 88< / span > < span class = "comment" > // TODO(user): Consider using a non-power of two factor if the error can' t be< / span > < / div >
< div class = "line" > < a id = "l00089" name = "l00089" > < / a > < span class = "lineno" > 89< / span > < span class = "comment" > // zero? Note however that using power of two has the extra advantage that< / span > < / div >
< div class = "line" > < a id = "l00090" name = "l00090" > < / a > < span class = "lineno" > 90< / span > < span class = "comment" > // subsequent int64_t -> double -> scaled back to int64_t will loose no extra< / span > < / div >
< div class = "line" > < a id = "l00091" name = "l00091" > < / a > < span class = "lineno" > 91< / span > < span class = "comment" > // information.< / span > < / div >
< div class = "line" > < a id = "l00092" name = "l00092" > < / a > < span class = "lineno" > 92< / span > < span class = "keywordtype" > int< / span > factor_exponent = 0;< / div >
< div class = "line" > < a id = "l00093" name = "l00093" > < / a > < span class = "lineno" > 93< / span > uint64_t sum_min = 0; < span class = "comment" > // negated.< / span > < / div >
< div class = "line" > < a id = "l00094" name = "l00094" > < / a > < span class = "lineno" > 94< / span > uint64_t sum_max = 0;< / div >
< div class = "line" > < a id = "l00095" name = "l00095" > < / a > < span class = "lineno" > 95< / span > < span class = "keywordtype" > bool< / span > recompute_sum = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00096" name = "l00096" > < / a > < span class = "lineno" > 96< / span > < span class = "keywordtype" > bool< / span > is_first_value = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00097" name = "l00097" > < / a > < span class = "lineno" > 97< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > msb = < a class = "code hl_function" href = "namespaceoperations__research.html#afa6ef9aef70f95b9d5bcee2c10937bc8" > MostSignificantBitPosition64< / a > (max_absolute_sum);< / div >
< div class = "line" > < a id = "l00098" name = "l00098" > < / a > < span class = "lineno" > 98< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > size = < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > .size();< / div >
< div class = "line" > < a id = "l00099" name = "l00099" > < / a > < span class = "lineno" > 99< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l00100" name = "l00100" > < / a > < span class = "lineno" > 100< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > x = < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > [i];< / div >
< div class = "line" > < a id = "l00101" name = "l00101" > < / a > < span class = "lineno" > 101< / span > < span class = "keywordtype" > double< / span > min_term = use_bounds ? x * lb[i] : -x;< / div >
< div class = "line" > < a id = "l00102" name = "l00102" > < / a > < span class = "lineno" > 102< / span > < span class = "keywordtype" > double< / span > max_term = use_bounds ? x * ub[i] : x;< / div >
< div class = "line" > < a id = "l00103" name = "l00103" > < / a > < span class = "lineno" > 103< / span > ReorderAndCapTerms(& min_term, & max_term);< / div >
< div class = "line" > < a id = "l00104" name = "l00104" > < / a > < span class = "lineno" > 104< / span > < / div >
< div class = "line" > < a id = "l00105" name = "l00105" > < / a > < span class = "lineno" > 105< / span > < span class = "comment" > // If min_term or max_term is not finite, then abort in the " error" state.< / span > < / div >
< div class = "line" > < a id = "l00106" name = "l00106" > < / a > < span class = "lineno" > 106< / span > < span class = "keywordflow" > if< / span > (!(min_term > -< a class = "code hl_variable" href = "namespaceoperations__research_1_1glop.html#af9a790b7e8c5b0c6d55b336177378e78" > kInfinity< / a > & & max_term < < a class = "code hl_variable" href = "namespaceoperations__research_1_1glop.html#af9a790b7e8c5b0c6d55b336177378e78" > kInfinity< / a > )) < span class = "keywordflow" > return< / 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 > < span class = "comment" > // A value of zero can just be skipped (and needs to because the code below< / span > < / div >
< div class = "line" > < a id = "l00109" name = "l00109" > < / a > < span class = "lineno" > 109< / span > < span class = "comment" > // doesn' t handle it correctly).< / span > < / div >
< div class = "line" > < a id = "l00110" name = "l00110" > < / a > < span class = "lineno" > 110< / span > < span class = "keywordflow" > if< / span > (min_term == 0.0 & & max_term == 0.0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00111" name = "l00111" > < / a > < span class = "lineno" > 111< / span > < / div >
< div class = "line" > < a id = "l00112" name = "l00112" > < / a > < span class = "lineno" > 112< / span > < span class = "comment" > // Compute the greatest candidate such that< / span > < / div >
< div class = "line" > < a id = "l00113" name = "l00113" > < / a > < span class = "lineno" > 113< / span > < span class = "comment" > // round(fabs(c).2^candidate) < = max_absolute_sum.< / span > < / div >
< div class = "line" > < a id = "l00114" name = "l00114" > < / a > < span class = "lineno" > 114< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > c = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (-min_term, max_term);< / div >
< div class = "line" > < a id = "l00115" name = "l00115" > < / a > < span class = "lineno" > 115< / span > < span class = "keywordtype" > int< / span > candidate = msb - ilogb(c);< / div >
< div class = "line" > < a id = "l00116" name = "l00116" > < / a > < span class = "lineno" > 116< / span > < span class = "keywordflow" > if< / span > (std::round(ldexp(std::abs(c), candidate)) > max_absolute_sum) {< / div >
< div class = "line" > < a id = "l00117" name = "l00117" > < / a > < span class = "lineno" > 117< / span > --candidate;< / div >
< div class = "line" > < a id = "l00118" name = "l00118" > < / a > < span class = "lineno" > 118< / span > }< / div >
< div class = "line" > < a id = "l00119" name = "l00119" > < / a > < span class = "lineno" > 119< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (std::abs(< span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (round(ldexp(c, candidate)))),< / div >
< div class = "line" > < a id = "l00120" name = "l00120" > < / a > < span class = "lineno" > 120< / span > max_absolute_sum);< / div >
< div class = "line" > < a id = "l00121" name = "l00121" > < / a > < span class = "lineno" > 121< / span > < / div >
< div class = "line" > < a id = "l00122" name = "l00122" > < / a > < span class = "lineno" > 122< / span > < span class = "comment" > // Update factor_exponent which is the min of all the candidates.< / span > < / div >
< div class = "line" > < a id = "l00123" name = "l00123" > < / a > < span class = "lineno" > 123< / span > < span class = "keywordflow" > if< / span > (is_first_value || candidate < factor_exponent) {< / div >
< div class = "line" > < a id = "l00124" name = "l00124" > < / a > < span class = "lineno" > 124< / span > is_first_value = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00125" name = "l00125" > < / a > < span class = "lineno" > 125< / span > factor_exponent = candidate;< / div >
< div class = "line" > < a id = "l00126" name = "l00126" > < / a > < span class = "lineno" > 126< / span > recompute_sum = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00127" name = "l00127" > < / a > < span class = "lineno" > 127< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00128" name = "l00128" > < / a > < span class = "lineno" > 128< / span > < span class = "comment" > // Update the sum of absolute values of the numbers seen so far.< / span > < / div >
< div class = "line" > < a id = "l00129" name = "l00129" > < / a > < span class = "lineno" > 129< / span > sum_min -=< / div >
< div class = "line" > < a id = "l00130" name = "l00130" > < / a > < span class = "lineno" > 130< / span > < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (std::round(ldexp(min_term, factor_exponent)));< / div >
< div class = "line" > < a id = "l00131" name = "l00131" > < / a > < span class = "lineno" > 131< / span > sum_max +=< / div >
< div class = "line" > < a id = "l00132" name = "l00132" > < / a > < span class = "lineno" > 132< / span > < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (std::round(ldexp(max_term, factor_exponent)));< / div >
< div class = "line" > < a id = "l00133" name = "l00133" > < / a > < span class = "lineno" > 133< / span > < span class = "keywordflow" > if< / span > (sum_min > max_absolute_sum || sum_max > max_absolute_sum) {< / div >
< div class = "line" > < a id = "l00134" name = "l00134" > < / a > < span class = "lineno" > 134< / span > factor_exponent--;< / div >
< div class = "line" > < a id = "l00135" name = "l00135" > < / a > < span class = "lineno" > 135< / span > recompute_sum = < span class = "keyword" > true< / 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 > }< / div >
< div class = "line" > < a id = "l00138" name = "l00138" > < / a > < span class = "lineno" > 138< / span > < / div >
< div class = "line" > < a id = "l00139" name = "l00139" > < / a > < span class = "lineno" > 139< / span > < span class = "comment" > // TODO(user): This is not super efficient, but note that in practice we< / span > < / div >
< div class = "line" > < a id = "l00140" name = "l00140" > < / a > < span class = "lineno" > 140< / span > < span class = "comment" > // will only scan the vector of values about log(size) times. It is possible< / span > < / div >
< div class = "line" > < a id = "l00141" name = "l00141" > < / a > < span class = "lineno" > 141< / span > < span class = "comment" > // to maintain an upper bound on the abs_sum in linear time instead, but the< / span > < / div >
< div class = "line" > < a id = "l00142" name = "l00142" > < / a > < span class = "lineno" > 142< / span > < span class = "comment" > // code and corner cases are a lot more involved. Also, we currently only< / span > < / div >
< div class = "line" > < a id = "l00143" name = "l00143" > < / a > < span class = "lineno" > 143< / span > < span class = "comment" > // use this code in situations where its run-time is negligeable compared to< / span > < / div >
< div class = "line" > < a id = "l00144" name = "l00144" > < / a > < span class = "lineno" > 144< / span > < span class = "comment" > // the rest.< / span > < / div >
< div class = "line" > < a id = "l00145" name = "l00145" > < / a > < span class = "lineno" > 145< / span > < span class = "keywordflow" > while< / span > (recompute_sum) {< / div >
< div class = "line" > < a id = "l00146" name = "l00146" > < / a > < span class = "lineno" > 146< / span > sum_min = 0;< / div >
< div class = "line" > < a id = "l00147" name = "l00147" > < / a > < span class = "lineno" > 147< / span > sum_max = 0;< / div >
< div class = "line" > < a id = "l00148" name = "l00148" > < / a > < span class = "lineno" > 148< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > j = 0; j < = i; ++j) {< / div >
< div class = "line" > < a id = "l00149" name = "l00149" > < / a > < span class = "lineno" > 149< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > x = < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > [j];< / div >
< div class = "line" > < a id = "l00150" name = "l00150" > < / a > < span class = "lineno" > 150< / span > < span class = "keywordtype" > double< / span > min_term = use_bounds ? x * lb[j] : -x;< / div >
< div class = "line" > < a id = "l00151" name = "l00151" > < / a > < span class = "lineno" > 151< / span > < span class = "keywordtype" > double< / span > max_term = use_bounds ? x * ub[j] : x;< / div >
< div class = "line" > < a id = "l00152" name = "l00152" > < / a > < span class = "lineno" > 152< / span > ReorderAndCapTerms(& min_term, & max_term);< / div >
< div class = "line" > < a id = "l00153" name = "l00153" > < / a > < span class = "lineno" > 153< / span > sum_min -=< / div >
< div class = "line" > < a id = "l00154" name = "l00154" > < / a > < span class = "lineno" > 154< / span > < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (std::round(ldexp(min_term, factor_exponent)));< / div >
< div class = "line" > < a id = "l00155" name = "l00155" > < / a > < span class = "lineno" > 155< / span > sum_max +=< / div >
< div class = "line" > < a id = "l00156" name = "l00156" > < / a > < span class = "lineno" > 156< / span > < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (std::round(ldexp(max_term, factor_exponent)));< / 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 > < span class = "keywordflow" > if< / span > (sum_min > max_absolute_sum || sum_max > max_absolute_sum) {< / div >
< div class = "line" > < a id = "l00159" name = "l00159" > < / a > < span class = "lineno" > 159< / span > factor_exponent--;< / div >
< div class = "line" > < a id = "l00160" name = "l00160" > < / a > < span class = "lineno" > 160< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00161" name = "l00161" > < / a > < span class = "lineno" > 161< / span > recompute_sum = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00162" name = "l00162" > < / a > < span class = "lineno" > 162< / span > }< / div >
< div class = "line" > < a id = "l00163" name = "l00163" > < / a > < span class = "lineno" > 163< / span > }< / div >
< div class = "line" > < a id = "l00164" name = "l00164" > < / a > < span class = "lineno" > 164< / span > }< / div >
< div class = "line" > < a id = "l00165" name = "l00165" > < / a > < span class = "lineno" > 165< / span > *scaling_factor = ldexp(1.0, factor_exponent);< / div >
< div class = "line" > < a id = "l00166" name = "l00166" > < / a > < span class = "lineno" > 166< / span > }< / div >
< div class = "line" > < a id = "l00167" name = "l00167" > < / a > < span class = "lineno" > 167< / span > < / div >
< div class = "line" > < a id = "l00168" name = "l00168" > < / a > < span class = "lineno" > 168< / span > } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a id = "l00169" name = "l00169" > < / a > < span class = "lineno" > 169< / span > < / div >
< div class = "line" > < a id = "l00170" name = "l00170" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#a46f21c3da23685e58b31d880b2144458" > 170< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a46f21c3da23685e58b31d880b2144458" > ComputeScalingErrors< / a > (< span class = "keyword" > const< / span > std::vector< double> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l00171" name = "l00171" > < / a > < span class = "lineno" > 171< / span > < span class = "keyword" > const< / span > std::vector< double> & lb,< / div >
< div class = "line" > < a id = "l00172" name = "l00172" > < / a > < span class = "lineno" > 172< / span > < span class = "keyword" > const< / span > std::vector< double> & ub, < span class = "keywordtype" > double< / span > scaling_factor,< / div >
< div class = "line" > < a id = "l00173" name = "l00173" > < / a > < span class = "lineno" > 173< / span > < span class = "keywordtype" > double< / span > * < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > ,< / div >
< div class = "line" > < a id = "l00174" name = "l00174" > < / a > < span class = "lineno" > 174< / span > < span class = "keywordtype" > double< / span > * max_scaled_sum_error) {< / div >
< div class = "line" > < a id = "l00175" name = "l00175" > < / a > < span class = "lineno" > 175< / span > ComputeScalingErrors< true> (< a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > , lb, ub, scaling_factor,< / div >
< div class = "line" > < a id = "l00176" name = "l00176" > < / a > < span class = "lineno" > 176< / span > < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > , max_scaled_sum_error);< / 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 > < / div >
< div class = "line" > < a id = "l00179" name = "l00179" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#aae3359f1c2367d44e5cf9be5d5abc89f" > 179< / a > < / span > < span class = "keywordtype" > double< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#aae3359f1c2367d44e5cf9be5d5abc89f" > GetBestScalingOfDoublesToInt64< / a > (< span class = "keyword" > const< / span > std::vector< double> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l00180" name = "l00180" > < / a > < span class = "lineno" > 180< / span > < span class = "keyword" > const< / span > std::vector< double> & lb,< / div >
< div class = "line" > < a id = "l00181" name = "l00181" > < / a > < span class = "lineno" > 181< / span > < span class = "keyword" > const< / span > std::vector< double> & ub,< / div >
< div class = "line" > < a id = "l00182" name = "l00182" > < / a > < span class = "lineno" > 182< / span > int64_t max_absolute_sum) {< / div >
< div class = "line" > < a id = "l00183" name = "l00183" > < / a > < span class = "lineno" > 183< / span > < span class = "keywordtype" > double< / span > scaling_factor;< / div >
< div class = "line" > < a id = "l00184" name = "l00184" > < / a > < span class = "lineno" > 184< / span > GetBestScalingOfDoublesToInt64< true> (< a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > , lb, ub, max_absolute_sum,< / div >
< div class = "line" > < a id = "l00185" name = "l00185" > < / a > < span class = "lineno" > 185< / span > & scaling_factor);< / div >
< div class = "line" > < a id = "l00186" name = "l00186" > < / a > < span class = "lineno" > 186< / span > < span class = "keywordflow" > return< / span > scaling_factor;< / div >
< div class = "line" > < a id = "l00187" name = "l00187" > < / a > < span class = "lineno" > 187< / span > }< / div >
< div class = "line" > < a id = "l00188" name = "l00188" > < / a > < span class = "lineno" > 188< / span > < / div >
< div class = "line" > < a id = "l00189" name = "l00189" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#a7cc8b704d0f858f38ad0851bc1b9d478" > 189< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#aae3359f1c2367d44e5cf9be5d5abc89f" > GetBestScalingOfDoublesToInt64< / a > (< span class = "keyword" > const< / span > std::vector< double> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l00190" name = "l00190" > < / a > < span class = "lineno" > 190< / span > int64_t max_absolute_sum,< / div >
< div class = "line" > < a id = "l00191" name = "l00191" > < / a > < span class = "lineno" > 191< / span > < span class = "keywordtype" > double< / span > * scaling_factor,< / div >
< div class = "line" > < a id = "l00192" name = "l00192" > < / a > < span class = "lineno" > 192< / span > < span class = "keywordtype" > double< / span > * < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > ) {< / div >
< div class = "line" > < a id = "l00193" name = "l00193" > < / a > < span class = "lineno" > 193< / span > < span class = "keywordtype" > double< / span > max_scaled_sum_error;< / div >
< div class = "line" > < a id = "l00194" name = "l00194" > < / a > < span class = "lineno" > 194< / span > GetBestScalingOfDoublesToInt64< false> (< a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > , {}, {}, max_absolute_sum,< / div >
< div class = "line" > < a id = "l00195" name = "l00195" > < / a > < span class = "lineno" > 195< / span > scaling_factor);< / div >
< div class = "line" > < a id = "l00196" name = "l00196" > < / a > < span class = "lineno" > 196< / span > ComputeScalingErrors< false> (< a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > , {}, {}, *scaling_factor,< / div >
< div class = "line" > < a id = "l00197" name = "l00197" > < / a > < span class = "lineno" > 197< / span > < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > , & max_scaled_sum_error);< / div >
< div class = "line" > < a id = "l00198" name = "l00198" > < / a > < span class = "lineno" > 198< / span > }< / div >
< div class = "line" > < a id = "l00199" name = "l00199" > < / a > < span class = "lineno" > 199< / span > < / div >
< div class = "line" > < a id = "l00200" name = "l00200" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#aae2e6ed909e0cd5f240b885800f55c87" > 200< / a > < / span > int64_t < a class = "code hl_function" href = "namespaceoperations__research.html#aae2e6ed909e0cd5f240b885800f55c87" > ComputeGcdOfRoundedDoubles< / a > (< span class = "keyword" > const< / span > std::vector< double> & x,< / div >
< div class = "line" > < a id = "l00201" name = "l00201" > < / a > < span class = "lineno" > 201< / span > < span class = "keywordtype" > double< / span > scaling_factor) {< / div >
< div class = "line" > < a id = "l00202" name = "l00202" > < / a > < span class = "lineno" > 202< / span > int64_t gcd = 0;< / div >
< div class = "line" > < a id = "l00203" name = "l00203" > < / a > < span class = "lineno" > 203< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < x.size() & & gcd != 1; ++i) {< / div >
< div class = "line" > < a id = "l00204" name = "l00204" > < / a > < span class = "lineno" > 204< / span > int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > = std::abs(std::round(x[i] * scaling_factor));< / div >
< div class = "line" > < a id = "l00205" name = "l00205" > < / a > < span class = "lineno" > 205< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > , 0);< / div >
< div class = "line" > < a id = "l00206" name = "l00206" > < / a > < span class = "lineno" > 206< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00207" name = "l00207" > < / a > < span class = "lineno" > 207< / span > < span class = "keywordflow" > if< / span > (gcd == 0) {< / div >
< div class = "line" > < a id = "l00208" name = "l00208" > < / a > < span class = "lineno" > 208< / span > gcd = < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ;< / div >
< div class = "line" > < a id = "l00209" name = "l00209" > < / a > < span class = "lineno" > 209< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00210" name = "l00210" > < / a > < span class = "lineno" > 210< / span > }< / div >
< div class = "line" > < a id = "l00211" name = "l00211" > < / a > < span class = "lineno" > 211< / span > < span class = "comment" > // GCD(gcd, value) = GCD(value, gcd % value);< / span > < / div >
< div class = "line" > < a id = "l00212" name = "l00212" > < / a > < span class = "lineno" > 212< / span > < span class = "keywordflow" > while< / span > (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > != 0) {< / div >
< div class = "line" > < a id = "l00213" name = "l00213" > < / a > < span class = "lineno" > 213< / span > < span class = "keyword" > const< / span > int64_t r = gcd % < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ;< / div >
< div class = "line" > < a id = "l00214" name = "l00214" > < / a > < span class = "lineno" > 214< / span > gcd = < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ;< / div >
< div class = "line" > < a id = "l00215" name = "l00215" > < / a > < span class = "lineno" > 215< / span > < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > = r;< / div >
< div class = "line" > < a id = "l00216" name = "l00216" > < / a > < span class = "lineno" > 216< / span > }< / div >
< div class = "line" > < a id = "l00217" name = "l00217" > < / a > < span class = "lineno" > 217< / span > }< / div >
< div class = "line" > < a id = "l00218" name = "l00218" > < / a > < span class = "lineno" > 218< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (gcd, 0);< / div >
< div class = "line" > < a id = "l00219" name = "l00219" > < / a > < span class = "lineno" > 219< / span > < span class = "keywordflow" > return< / span > gcd > 0 ? gcd : 1;< / div >
< div class = "line" > < a id = "l00220" name = "l00220" > < / a > < span class = "lineno" > 220< / span > }< / div >
< div class = "line" > < a id = "l00221" name = "l00221" > < / a > < span class = "lineno" > 221< / span > < / div >
< div class = "line" > < a id = "l00222" name = "l00222" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#a01cc8a711d189115758c50170038904f" > 222< / a > < / span > < span class = "keywordtype" > int< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a01cc8a711d189115758c50170038904f" > fast_ilogb< / a > (< span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ) {< / div >
< div class = "line" > < a id = "l00223" name = "l00223" > < / a > < span class = "lineno" > 223< / span > < span class = "keyword" > static_assert< / span > (CHAR_BIT == 8);< / div >
< div class = "line" > < a id = "l00224" name = "l00224" > < / a > < span class = "lineno" > 224< / span > < span class = "keyword" > static_assert< / span > (< span class = "keyword" > sizeof< / span > (double) == 8);< / div >
< div class = "line" > < a id = "l00225" name = "l00225" > < / a > < span class = "lineno" > 225< / span > < span class = "comment" > // Get little-endian bit-representation of the floating point value.< / span > < / div >
< div class = "line" > < a id = "l00226" name = "l00226" > < / a > < span class = "lineno" > 226< / span > < span class = "keyword" > const< / span > uint64_t bit_rep =< / div >
< div class = "line" > < a id = "l00227" name = "l00227" > < / a > < span class = "lineno" > 227< / span > absl::little_endian::FromHost64(absl::bit_cast< uint64_t> (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ));< / div >
< div class = "line" > < a id = "l00228" name = "l00228" > < / a > < span class = "lineno" > 228< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > ((bit_rep > > 52) & 0x7FF) - 1023;< / 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" > 230< / span > < / div >
< div class = "line" > < a id = "l00231" name = "l00231" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#a5c5a3f603ad3ee0c6e6d6c70fcd54219" > 231< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a5c5a3f603ad3ee0c6e6d6c70fcd54219" > fast_scalbn_inplace< / a > (< span class = "keywordtype" > double< / span > & mutable_value, < span class = "keywordtype" > int< / span > exponent) {< / div >
< div class = "line" > < a id = "l00232" name = "l00232" > < / a > < span class = "lineno" > 232< / span > mutable_value = < a class = "code hl_function" href = "namespaceoperations__research.html#a5550c9e9dfe6d29df888acafa85c790e" > fast_scalbn< / a > (mutable_value, exponent);< / div >
< div class = "line" > < a id = "l00233" name = "l00233" > < / a > < span class = "lineno" > 233< / span > }< / div >
< div class = "line" > < a id = "l00234" name = "l00234" > < / a > < span class = "lineno" > 234< / span > < / div >
< div class = "line" > < a id = "l00235" name = "l00235" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research.html#a5550c9e9dfe6d29df888acafa85c790e" > 235< / a > < / span > < span class = "keywordtype" > double< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a5550c9e9dfe6d29df888acafa85c790e" > fast_scalbn< / a > (< span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > , < span class = "keywordtype" > int< / span > exponent) {< / div >
< div class = "line" > < a id = "l00236" name = "l00236" > < / a > < span class = "lineno" > 236< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > == 0.0) < span class = "keywordflow" > return< / span > 0.0;< / div >
< div class = "line" > < a id = "l00237" name = "l00237" > < / a > < span class = "lineno" > 237< / span > uint64_t bit_rep =< / div >
< div class = "line" > < a id = "l00238" name = "l00238" > < / a > < span class = "lineno" > 238< / span > absl::little_endian::FromHost64(absl::bit_cast< uint64_t> (< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ));< / div >
< div class = "line" > < a id = "l00239" name = "l00239" > < / a > < span class = "lineno" > 239< / span > < span class = "comment" > // Binary representation is: (sign-bit)(11 exponent bits)(52 mantissa bits)< / span > < / div >
< div class = "line" > < a id = "l00240" name = "l00240" > < / a > < span class = "lineno" > 240< / span > < span class = "keyword" > constexpr< / span > uint64_t kExponentMask(0x7FF0000000000000);< / div >
< div class = "line" > < a id = "l00241" name = "l00241" > < / a > < span class = "lineno" > 241< / span > < span class = "comment" > // This addition relies on the fact that signed numbers are written in< / span > < / div >
< div class = "line" > < a id = "l00242" name = "l00242" > < / a > < span class = "lineno" > 242< / span > < span class = "comment" > // two-s complement, and is correct as long as the sum does not< / span > < / div >
< div class = "line" > < a id = "l00243" name = "l00243" > < / a > < span class = "lineno" > 243< / span > < span class = "comment" > // overflow/underflow the result.< / span > < / div >
< div class = "line" > < a id = "l00244" name = "l00244" > < / a > < span class = "lineno" > 244< / span > < span class = "keyword" > const< / span > uint64_t value_exponent =< / div >
< div class = "line" > < a id = "l00245" name = "l00245" > < / a > < span class = "lineno" > 245< / span > (bit_rep + (< span class = "keyword" > static_cast< < / span > uint64_t< span class = "keyword" > > < / span > (exponent) < < 52)) & kExponentMask;< / div >
< div class = "line" > < a id = "l00246" name = "l00246" > < / a > < span class = "lineno" > 246< / span > bit_rep & = ~kExponentMask;< / div >
< div class = "line" > < a id = "l00247" name = "l00247" > < / a > < span class = "lineno" > 247< / span > bit_rep |= value_exponent;< / div >
< div class = "line" > < a id = "l00248" name = "l00248" > < / a > < span class = "lineno" > 248< / span > < span class = "keywordflow" > return< / span > absl::bit_cast< double> (absl::little_endian::ToHost64(bit_rep));< / div >
< div class = "line" > < a id = "l00249" name = "l00249" > < / a > < span class = "lineno" > 249< / span > }< / div >
< div class = "line" > < a id = "l00250" name = "l00250" > < / a > < span class = "lineno" > 250< / span > < / div >
< div class = "line" > < a id = "l00251" name = "l00251" > < / a > < span class = "lineno" > 251< / 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" > < div class = "ttname" > < a href = "base_2logging_8h.html" > logging.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_a4395e95bab44e222cb2e77251017a0e2" > < div class = "ttname" > < a href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > < / div > < div class = "ttdeci" > #define DCHECK_LE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00893" > base/logging.h:893< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_aae2dc65d9ea248d54bf39daa986dd295" > < div class = "ttname" > < a href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > < / div > < div class = "ttdeci" > #define DCHECK_GE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00895" > base/logging.h:895< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "abitset_8h_html" > < div class = "ttname" > < a href = "bitset_8h.html" > bitset.h< / a > < / div > < / div >
< div class = "ttc" id = "ademon__profiler_8cc_html_ac072af30c4ffbc834bb4c681f6ecb514" > < div class = "ttname" > < a href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > < / div > < div class = "ttdeci" > int64_t value< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "demon__profiler_8cc_source.html#l00044" > demon_profiler.cc:44< / a > < / div > < / div >
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< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_af9a790b7e8c5b0c6d55b336177378e78" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#af9a790b7e8c5b0c6d55b336177378e78" > operations_research::glop::kInfinity< / a > < / div > < div class = "ttdeci" > const double kInfinity< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "lp__types_8h_source.html#l00084" > lp_types.h:84< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1math__opt_html_a5de89a1f6e3f80a49a0d76136d8044e2" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2" > operations_research::math_opt::swap< / a > < / div > < div class = "ttdeci" > void swap(IdMap< K, V > & a, IdMap< K, V > & b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "id__map_8h_source.html#l00262" > id_map.h:262< / a > < / 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 = "anamespaceoperations__research_html_a01cc8a711d189115758c50170038904f" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a01cc8a711d189115758c50170038904f" > operations_research::fast_ilogb< / a > < / div > < div class = "ttdeci" > int fast_ilogb(double value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00222" > fp_utils.cc:222< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a46f21c3da23685e58b31d880b2144458" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a46f21c3da23685e58b31d880b2144458" > operations_research::ComputeScalingErrors< / a > < / div > < div class = "ttdeci" > void ComputeScalingErrors(const std::vector< double > & input, const std::vector< double > & lb, const std::vector< double > & ub, double scaling_factor, double *max_relative_coeff_error, double *max_scaled_sum_error)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00170" > fp_utils.cc:170< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a5550c9e9dfe6d29df888acafa85c790e" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a5550c9e9dfe6d29df888acafa85c790e" > operations_research::fast_scalbn< / a > < / div > < div class = "ttdeci" > double fast_scalbn(double value, int exponent)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00235" > fp_utils.cc:235< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a5c5a3f603ad3ee0c6e6d6c70fcd54219" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a5c5a3f603ad3ee0c6e6d6c70fcd54219" > operations_research::fast_scalbn_inplace< / a > < / div > < div class = "ttdeci" > void fast_scalbn_inplace(double & mutable_value, int exponent)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00231" > fp_utils.cc:231< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_aae2e6ed909e0cd5f240b885800f55c87" > < div class = "ttname" > < a href = "namespaceoperations__research.html#aae2e6ed909e0cd5f240b885800f55c87" > operations_research::ComputeGcdOfRoundedDoubles< / a > < / div > < div class = "ttdeci" > int64_t ComputeGcdOfRoundedDoubles(const std::vector< double > & x, double scaling_factor)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00200" > fp_utils.cc:200< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_aae3359f1c2367d44e5cf9be5d5abc89f" > < div class = "ttname" > < a href = "namespaceoperations__research.html#aae3359f1c2367d44e5cf9be5d5abc89f" > operations_research::GetBestScalingOfDoublesToInt64< / a > < / div > < div class = "ttdeci" > double GetBestScalingOfDoublesToInt64(const std::vector< double > & input, const std::vector< double > & lb, const std::vector< double > & ub, int64_t max_absolute_sum)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "fp__utils_8cc_source.html#l00179" > fp_utils.cc:179< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_afa6ef9aef70f95b9d5bcee2c10937bc8" > < div class = "ttname" > < a href = "namespaceoperations__research.html#afa6ef9aef70f95b9d5bcee2c10937bc8" > operations_research::MostSignificantBitPosition64< / a > < / div > < div class = "ttdeci" > int MostSignificantBitPosition64(uint64_t n)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00231" > bitset.h:231< / a > < / div > < / div >
< div class = "ttc" id = "aparser_8yy_8cc_html_a5a634cf4429798b1c921a81de8250051" > < div class = "ttname" > < a href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > < / div > < div class = "ttdeci" > static int input(yyscan_t yyscanner)< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "asat_2lp__utils_8cc_html_a2a1a02478d02cd8e42a1afece079d4a2" > < div class = "ttname" > < a href = "sat_2lp__utils_8cc.html#a2a1a02478d02cd8e42a1afece079d4a2" > max_relative_coeff_error< / a > < / div > < div class = "ttdeci" > double max_relative_coeff_error< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2lp__utils_8cc_source.html#l00598" > sat/lp_utils.cc:598< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
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2020-09-01 16:00:33 +02:00
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