1 // Copyright 2017 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_NUMERICS_MATH_CONSTANTS_H_ 6 #define BASE_NUMERICS_MATH_CONSTANTS_H_ 7 8 namespace base 9 { 10 11 constexpr double kPiDouble = 3.14159265358979323846; 12 constexpr float kPiFloat = 3.14159265358979323846f; 13 14 // The mean acceleration due to gravity on Earth in m/s^2. 15 constexpr double kMeanGravityDouble = 9.80665; 16 constexpr float kMeanGravityFloat = 9.80665f; 17 18 } // namespace base 19 20 #endif // BASE_NUMERICS_MATH_CONSTANTS_H_ 21