73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
//
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// "$Id: math.h 4288 2005-04-16 00:13:17Z mike $"
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//
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// Math header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2005 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#ifndef fl_math_h
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# define fl_math_h
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// Apple's ProjectBuilder has the nasty habit of including recursively
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// down the file tree. To avoid re-including <FL/math.h> we must
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// directly include the systems math file. (Plus, I could not find a
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// predefined macro for ProjectBuilder builds, so we have to define it
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// in the project)
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# if defined(__APPLE__) && defined(__PROJECTBUILDER__)
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# include "/usr/include/math.h"
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# else
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# include <math.h>
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# endif
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# ifdef __EMX__
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# include <float.h>
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# endif
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# ifndef M_PI
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# define M_PI 3.14159265358979323846
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# define M_PI_2 1.57079632679489661923
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# define M_PI_4 0.78539816339744830962
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# define M_1_PI 0.31830988618379067154
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# define M_2_PI 0.63661977236758134308
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# endif // !M_PI
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# ifndef M_SQRT2
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# define M_SQRT2 1.41421356237309504880
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# define M_SQRT1_2 0.70710678118654752440
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# endif // !M_SQRT2
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# if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__)
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inline double rint(double v) {return floor(v+.5);}
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inline double copysign(double a, double b) {return b<0 ? -a : a;}
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# endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__
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#endif // !fl_math_h
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//
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// End of "$Id: math.h 4288 2005-04-16 00:13:17Z mike $".
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//
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