1 /* 2 * The Spar Library - modular math parser 3 * Copyright (C) 2000,2001 Davide Angelocola <davide178@inwind.it> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2.1 of the License. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 18 * Boston, MA 02111-1307, USA. 19 * 20 */ 21 22 #ifndef _sl_constant_h_ 23 #define _sl_constant_h_ 24 25 #undef M_E 26 #undef M_LOG2E 27 #undef M_LOG10E 28 #undef M_LN2 29 #undef M_LN10 30 #undef M_PI 31 #undef M_PI_2 32 #undef M_PI_4 33 #undef M_1_PI 34 #undef M_2_PI 35 #undef M_2_SQRTPI 36 #undef M_SQRT2 37 #undef M_SQRT1_2 38 39 #define M_E 2.7182818284590452354 /* e */ 40 #define M_LOG2E 1.4426950408889634074 /* log_2 e */ 41 #define M_LOG10E 0.43429448190325182765 /* log_10 e */ 42 #define M_LN2 0.69314718055994530942 /* log_e 2 */ 43 #define M_LN10 2.30258509299404568402 /* log_e 10 */ 44 #define M_PI 3.14159265358979323846 /* pi */ 45 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 46 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 47 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 48 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 49 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 50 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 51 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 52 53 /* 54 * Some other constants 55 */ 56 #define SL_NAN (0.0 / 0.0) 57 #define SL_POSINF (+1.0 / 0.0) 58 #define SL_NEGINF (-1.0 / 0.0) 59 #define SL_DOUBLE_EPSILON 2.2204460492503131e-16 60 #define SL_DOUBLE_MIN 2.2250738585072014e-308 61 #define SL_DOUBLE_MAX 1.7976931348623157e+308 62 63 #define ZERO 0.0 64 #define SL_ZERO ZERO 65 #endif /* _sl_constant_h_ */ 66