mirror of
https://bitbucket.org/smil3y/kdelibs.git
synced 2025-02-25 03:12:49 +00:00
70 lines
2.9 KiB
C
70 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef WTF_MathExtras_h
|
|
#define WTF_MathExtras_h
|
|
|
|
#include <math.h>
|
|
|
|
#ifndef M_PI
|
|
const double piDouble = 3.14159265358979323846;
|
|
const float piFloat = 3.14159265358979323846f;
|
|
#else
|
|
const double piDouble = M_PI;
|
|
const float piFloat = static_cast<float>(M_PI);
|
|
#endif
|
|
|
|
#ifndef M_PI_4
|
|
const double piOverFourDouble = 0.785398163397448309616;
|
|
const float piOverFourFloat = 0.785398163397448309616f;
|
|
#else
|
|
const double piOverFourDouble = M_PI_4;
|
|
const float piOverFourFloat = static_cast<float>(M_PI_4);
|
|
#endif
|
|
|
|
#if COMPILER(MSVC)
|
|
|
|
// Work around a bug in the Microsoft CRT, where fmod(x, +-infinity) yields NaN instead of x.
|
|
inline double wtf_fmod(double x, double y) { return (!isinf(x) && isinf(y)) ? x : fmod(x, y); }
|
|
|
|
#define fmod(x, y) wtf_fmod(x, y)
|
|
|
|
#endif // #if COMPILER(MSVC)
|
|
|
|
inline double deg2rad(double d) { return d * piDouble / 180.0; }
|
|
inline double rad2deg(double r) { return r * 180.0 / piDouble; }
|
|
inline double deg2grad(double d) { return d * 400.0 / 360.0; }
|
|
inline double grad2deg(double g) { return g * 360.0 / 400.0; }
|
|
inline double rad2grad(double r) { return r * 200.0 / piDouble; }
|
|
inline double grad2rad(double g) { return g * piDouble / 200.0; }
|
|
|
|
inline float deg2rad(float d) { return d * piFloat / 180.0f; }
|
|
inline float rad2deg(float r) { return r * 180.0f / piFloat; }
|
|
inline float deg2grad(float d) { return d * 400.0f / 360.0f; }
|
|
inline float grad2deg(float g) { return g * 360.0f / 400.0f; }
|
|
inline float rad2grad(float r) { return r * 200.0f / piFloat; }
|
|
inline float grad2rad(float g) { return g * piFloat / 200.0f; }
|
|
|
|
#endif // #ifndef WTF_MathExtras_h
|