| DRC | 2ff39b8 | 2011-07-28 08:38:59 +0000 | [diff] [blame] | 1 | // |
| 2 | // "$Id: math.h 7903 2010-11-28 21:06:39Z matt $" |
| 3 | // |
| 4 | // Math header file for the Fast Light Tool Kit (FLTK). |
| 5 | // |
| 6 | // Copyright 1998-2010 by Bill Spitzak and others. |
| 7 | // |
| 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. |
| 12 | // |
| 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. |
| 17 | // |
| 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 |
| 21 | // USA. |
| 22 | // |
| 23 | // Please report all bugs and problems on the following page: |
| 24 | // |
| 25 | // http://www.fltk.org/str.php |
| 26 | // |
| 27 | |
| 28 | // Xcode on OS X includes files by recursing down into directories. |
| 29 | // This code catches the cycle and directly includes the required file. |
| 30 | #ifdef fl_math_h_cyclic_include |
| 31 | # include "/usr/include/math.h" |
| 32 | #endif |
| 33 | |
| 34 | #ifndef fl_math_h |
| 35 | # define fl_math_h |
| 36 | |
| 37 | # define fl_math_h_cyclic_include |
| 38 | # include <math.h> |
| 39 | # undef fl_math_h_cyclic_include |
| 40 | |
| 41 | # ifdef __EMX__ |
| 42 | # include <float.h> |
| 43 | # endif |
| 44 | |
| 45 | |
| 46 | # ifndef M_PI |
| 47 | # define M_PI 3.14159265358979323846 |
| 48 | # define M_PI_2 1.57079632679489661923 |
| 49 | # define M_PI_4 0.78539816339744830962 |
| 50 | # define M_1_PI 0.31830988618379067154 |
| 51 | # define M_2_PI 0.63661977236758134308 |
| 52 | # endif // !M_PI |
| 53 | |
| 54 | # ifndef M_SQRT2 |
| 55 | # define M_SQRT2 1.41421356237309504880 |
| 56 | # define M_SQRT1_2 0.70710678118654752440 |
| 57 | # endif // !M_SQRT2 |
| 58 | |
| 59 | # if (defined(WIN32) || defined(CRAY)) && !defined(__MINGW32__) && !defined(__MWERKS__) |
| 60 | |
| 61 | inline double rint(double v) {return floor(v+.5);} |
| 62 | inline double copysign(double a, double b) {return b<0 ? -a : a;} |
| 63 | |
| 64 | # endif // (WIN32 || CRAY) && !__MINGW32__ && !__MWERKS__ |
| 65 | |
| 66 | #endif // !fl_math_h |
| 67 | |
| 68 | |
| 69 | // |
| 70 | // End of "$Id: math.h 7903 2010-11-28 21:06:39Z matt $". |
| 71 | // |