8bb54b04ef
FYI: find ortools \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/\(Copyright 2010\)-2018/\1-2021/g'
37 lines
1.4 KiB
C++
37 lines
1.4 KiB
C++
// Copyright 2010-2021 Google LLC
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef OR_TOOLS_UTIL_RATIONAL_APPROXIMATION_H_
|
|
#define OR_TOOLS_UTIL_RATIONAL_APPROXIMATION_H_
|
|
|
|
#include <utility>
|
|
|
|
#include "ortools/base/integral_types.h"
|
|
|
|
namespace operations_research {
|
|
|
|
// The type Fraction represents a number in the form of two integers: numerator
|
|
// and denominator. This type is used to display the rational approximation
|
|
// of a Fractional number.
|
|
typedef std::pair<int64_t, int64_t> Fraction;
|
|
|
|
// Computes a rational approximation numerator/denominator for value x
|
|
// using a continued fraction algorithm. The absolute difference between the
|
|
// output fraction and the input "x" will not exceed "precision".
|
|
// TODO(user): make a parameterized template with integer and floating-point
|
|
// type parameters.
|
|
Fraction RationalApproximation(const double x, const double precision);
|
|
|
|
} // namespace operations_research
|
|
#endif // OR_TOOLS_UTIL_RATIONAL_APPROXIMATION_H_
|