//// "$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 $".//