2 // "$Id: math.h,v 1.2 2002/12/01 15:38:37 neurosurg Exp $"
4 // Math header file for the Fast Light Tool Kit (FLTK).
6 // Copyright 1998-2002 by Bill Spitzak and others.
8 // This library is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU Library General Public
10 // License as published by the Free Software Foundation; either
11 // version 2 of the License, or (at your option) any later version.
13 // This library is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // Library General Public License for more details.
18 // You should have received a copy of the GNU Library General Public
19 // License along with this library; if not, write to the Free Software
20 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
23 // Please report all bugs and problems to "fltk-bugs@fltk.org".
33 # define M_PI 3.14159265358979323846
34 # define M_PI_2 1.57079632679489661923
35 # define M_PI_4 0.78539816339744830962
36 # define M_1_PI 0.31830988618379067154
37 # define M_2_PI 0.63661977236758134308
41 # define M_SQRT2 1.41421356237309504880
42 # define M_SQRT1_2 0.70710678118654752440
49 # if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__)
51 inline double rint(double v) {return floor(v+.5);}
52 inline double copysign(double a, double b) {return b<0 ? -a : a;}
54 # endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__
60 // End of "$Id: math.h,v 1.2 2002/12/01 15:38:37 neurosurg Exp $".