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Diffstat (limited to 'fltk/fltk/math.h')
| -rw-r--r-- | fltk/fltk/math.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/fltk/fltk/math.h b/fltk/fltk/math.h new file mode 100644 index 0000000..ae56143 --- /dev/null +++ b/fltk/fltk/math.h @@ -0,0 +1,92 @@ +// +// "$Id: math.h 4886 2006-03-30 09:55:32Z fabien $" +// +// The purpose of this header file is to make math.h look the same as +// Unix on other operating systems. +// +// Copyright 1998-2006 by Bill Spitzak and others. +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Library General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Library General Public License for more details. +// +// You should have received a copy of the GNU Library General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 +// USA. +// +// Please report all bugs and problems to "fltk-bugs@fltk.org". +// + +#ifndef fl_math_h +#define fl_math_h + +#include <math.h> + +#if defined(_WIN32) && !defined(__CYGWIN__) +/* things missing from <math.h> on Windows: */ +# include <float.h> + +# ifndef M_PI +# define M_PI 3.14159265358979323846 +# define M_PI_2 1.57079632679489661923 +# define M_PI_4 0.78539816339744830962 +# define M_1_PI 0.31830988618379067154 +# define M_2_PI 0.63661977236758134308 +# define M_SQRT2 1.41421356237309504880 +# define M_SQRT1_2 0.70710678118654752440 +# endif + +# define rint(v) floor((v)+.5) +# define copysign _copysign +# define drand48() ((double)rand()/RAND_MAX) +# define srand48(n) srand((n)); + +#endif + +#ifdef __EMX__ +# include <float.h> +#endif + +// define missing 'f' versions of functions: +#if 1 // All systems seem to be missing rintf: +# define rintf(v) floorf((v)+.5f) +#endif +#if defined(__APPLE__) || defined(__sun__) || defined(__BORLANDC__) +# define floorf(a) ((float)floor(a)) +# define ceilf(a) ((float)ceil(a)) +# define fmodf(a,b) ((float)fmod(a,b)) +# undef fabsf +# define fabsf(a) ((float)fabs(a)) +# define sinf(a) ((float)sin(a)) +# define cosf(a) ((float)cos(a)) +# define tanf(a) ((float)tan(a)) +# define asinf(a) ((float)asin(a)) +# define acosf(a) ((float)acos(a)) +# define atanf(a) ((float)atan(a)) +# define atan2f(a,b) ((float)atan2(a,b)) +# define expf(a) ((float)exp(a)) +# define logf(a) ((float)log(a)) +# define log10f(a) ((float)log10(a)) +# undef sqrtf +# define sqrtf(a) ((float)sqrt(a)) +#endif +#ifdef __alpha // powf is broken on alphas, at least in gcc +# define powf(a,b) ((float)pow(a,b)) +#endif +#ifdef _WIN32 +# define expm1f(a) ((float)expm1(a)) +# define log1pf(a) ((float)log1p(a)) +#endif + +#endif + +// +// End of "$Id: math.h 4886 2006-03-30 09:55:32Z fabien $". +// |