mirror of https://github.com/fltk/fltk
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
//
|
|
// "$Id$"
|
|
//
|
|
// Math header file for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2009 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 on the following page:
|
|
//
|
|
// http://www.fltk.org/str.php
|
|
//
|
|
|
|
#ifndef fl_math_h
|
|
# define fl_math_h
|
|
|
|
// Apple's ProjectBuilder has the nasty habit of including recursively
|
|
// down the file tree. To avoid re-including <FL/math.h> we must
|
|
// directly include the systems math file. (Plus, I could not find a
|
|
// predefined macro for ProjectBuilder builds, so we have to define it
|
|
// in the project)
|
|
# if defined(__APPLE__) && defined(__PROJECTBUILDER__)
|
|
# include "/usr/include/math.h"
|
|
# else
|
|
# include <math.h>
|
|
# endif
|
|
|
|
# ifdef __EMX__
|
|
# include <float.h>
|
|
# endif
|
|
|
|
|
|
# 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
|
|
# endif // !M_PI
|
|
|
|
# ifndef M_SQRT2
|
|
# define M_SQRT2 1.41421356237309504880
|
|
# define M_SQRT1_2 0.70710678118654752440
|
|
# endif // !M_SQRT2
|
|
|
|
# if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__)
|
|
|
|
inline double rint(double v) {return floor(v+.5);}
|
|
inline double copysign(double a, double b) {return b<0 ? -a : a;}
|
|
|
|
# endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__
|
|
|
|
#endif // !fl_math_h
|
|
|
|
|
|
//
|
|
// End of "$Id$".
|
|
//
|