mirror of https://github.com/fltk/fltk
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
//
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// "$Id$"
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//
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// Math header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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// Xcode on OS X includes files by recursing down into directories.
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// This code catches the cycle and directly includes the required file.
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#ifdef fl_math_h_cyclic_include
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# include "/usr/include/math.h"
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#endif
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#ifndef fl_math_h
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# define fl_math_h
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# define fl_math_h_cyclic_include
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# include <math.h>
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# undef fl_math_h_cyclic_include
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# ifdef __EMX__
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# include <float.h>
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# endif
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# ifndef M_PI
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# define M_PI 3.14159265358979323846
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# define M_PI_2 1.57079632679489661923
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# define M_PI_4 0.78539816339744830962
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# define M_1_PI 0.31830988618379067154
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# define M_2_PI 0.63661977236758134308
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# endif // !M_PI
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# ifndef M_SQRT2
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# define M_SQRT2 1.41421356237309504880
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# define M_SQRT1_2 0.70710678118654752440
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# endif // !M_SQRT2
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# if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__)
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inline double rint(double v) {return floor(v+.5);}
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inline double copysign(double a, double b) {return b<0 ? -a : a;}
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# endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__
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#endif // !fl_math_h
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//
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// End of "$Id$".
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//
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