| // Copyright 2017 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_NUMERICS_MATH_CONSTANTS_H_ |
| #define BASE_NUMERICS_MATH_CONSTANTS_H_ |
| |
| namespace gurl_base { |
| |
| constexpr double kPiDouble = 3.14159265358979323846; |
| constexpr float kPiFloat = 3.14159265358979323846f; |
| |
| // pi/180 and 180/pi. These are correctly rounded from the true |
| // mathematical value, unlike what you'd get from e.g. |
| // 180.0f / kPiFloat. |
| constexpr double kDegToRadDouble = 0.017453292519943295769; |
| constexpr float kDegToRadFloat = 0.017453292519943295769f; |
| constexpr double kRadToDegDouble = 57.295779513082320876798; |
| constexpr float kRadToDegFloat = 57.295779513082320876798f; |
| |
| // sqrt(1/2) = 1/sqrt(2). |
| constexpr double kSqrtHalfDouble = 0.70710678118654752440; |
| constexpr float kSqrtHalfFloat = 0.70710678118654752440f; |
| |
| // The mean acceleration due to gravity on Earth in m/s^2. |
| constexpr double kMeanGravityDouble = 9.80665; |
| constexpr float kMeanGravityFloat = 9.80665f; |
| |
| } // namespace base |
| |
| #endif // BASE_NUMERICS_MATH_CONSTANTS_H_ |
