?? math.h
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//// "$Id: math.h 4288 2005-04-16 00:13:17Z mike $"//// Math header file for the Fast Light Tool Kit (FLTK).//// Copyright 1998-2005 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: math.h 4288 2005-04-16 00:13:17Z mike $".//
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