40 lines
1.5 KiB
C++
40 lines
1.5 KiB
C++
// Copyright 2010-2025 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 ORTOOLS_UTIL_FP_ROUNDTRIP_CONV_TESTING_H_
|
|
#define ORTOOLS_UTIL_FP_ROUNDTRIP_CONV_TESTING_H_
|
|
|
|
#include "absl/strings/string_view.h"
|
|
|
|
namespace operations_research {
|
|
|
|
// Number that can be used in unit tests to validate that RoundTripDoubleFormat
|
|
// is actually used by the underlying code.
|
|
//
|
|
// This value has a unique shortest base-10 representation which is
|
|
// "0.10000000000000002": 0.10000000000000001 and 0.10000000000000003
|
|
// respectively round to the two adjacent doubles, which shortest
|
|
// representations are "0.1" and "0.10000000000000003".
|
|
//
|
|
// When printed with the default formatting of floating point numbers, this will
|
|
// be printed as "0.1".
|
|
//
|
|
// The kRoundTripTestNumberStr constant can be used to test the output.
|
|
inline constexpr double kRoundTripTestNumber = 0.10000000000000002;
|
|
inline constexpr absl::string_view kRoundTripTestNumberStr =
|
|
"0.10000000000000002";
|
|
|
|
} // namespace operations_research
|
|
|
|
#endif // ORTOOLS_UTIL_FP_ROUNDTRIP_CONV_TESTING_H_
|