math.h revision 1.11
1 /* $NetBSD: math.h,v 1.11 1998/04/08 23:42:59 tv Exp $ */ 2 3 /* 4 * ==================================================== 5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 6 * 7 * Developed at SunPro, a Sun Microsystems, Inc. business. 8 * Permission to use, copy, modify, and distribute this 9 * software is freely granted, provided that this notice 10 * is preserved. 11 * ==================================================== 12 */ 13 14 /* 15 * @(#)fdlibm.h 5.1 93/09/24 16 */ 17 18 #ifndef _MATH_H_ 19 #define _MATH_H_ 20 21 /* 22 * ANSI/POSIX 23 */ 24 extern char __infinity[]; 25 #define HUGE_VAL (*(double *) __infinity) 26 27 /* 28 * XOPEN/SVID 29 */ 30 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 31 #define M_E 2.7182818284590452354 /* e */ 32 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 33 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 34 #define M_LN2 0.69314718055994530942 /* log e2 */ 35 #define M_LN10 2.30258509299404568402 /* log e10 */ 36 #define M_PI 3.14159265358979323846 /* pi */ 37 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 38 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 39 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 40 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 41 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 42 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 43 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 44 45 #define MAXFLOAT ((float)3.40282346638528860e+38) 46 extern int signgam; 47 48 #if !defined(_XOPEN_SOURCE) 49 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 50 51 #define _LIB_VERSION_TYPE enum fdversion 52 #define _LIB_VERSION _fdlib_version 53 54 /* if global variable _LIB_VERSION is not desirable, one may 55 * change the following to be a constant by: 56 * #define _LIB_VERSION_TYPE const enum version 57 * In that case, after one initializes the value _LIB_VERSION (see 58 * s_lib_version.c) during compile time, it cannot be modified 59 * in the middle of a program 60 */ 61 extern _LIB_VERSION_TYPE _LIB_VERSION; 62 63 #define _IEEE_ fdlibm_ieee 64 #define _SVID_ fdlibm_svid 65 #define _XOPEN_ fdlibm_xopen 66 #define _POSIX_ fdlibm_posix 67 68 #ifndef __cplusplus 69 struct exception { 70 int type; 71 char *name; 72 double arg1; 73 double arg2; 74 double retval; 75 }; 76 #endif 77 78 #define HUGE MAXFLOAT 79 80 /* 81 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 82 * (one may replace the following line by "#include <values.h>") 83 */ 84 85 #define X_TLOSS 1.41484755040568800000e+16 86 87 #define DOMAIN 1 88 #define SING 2 89 #define OVERFLOW 3 90 #define UNDERFLOW 4 91 #define TLOSS 5 92 #define PLOSS 6 93 94 #endif /* !_XOPEN_SOURCE */ 95 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ 96 97 98 #include <sys/cdefs.h> 99 __BEGIN_DECLS 100 /* 101 * ANSI/POSIX 102 */ 103 extern double acos __P((double)); 104 extern double asin __P((double)); 105 extern double atan __P((double)); 106 extern double atan2 __P((double, double)); 107 extern double cos __P((double)); 108 extern double sin __P((double)); 109 extern double tan __P((double)); 110 111 extern double cosh __P((double)); 112 extern double sinh __P((double)); 113 extern double tanh __P((double)); 114 115 extern double exp __P((double)); 116 extern double frexp __P((double, int *)); 117 extern double ldexp __P((double, int)); 118 extern double log __P((double)); 119 extern double log10 __P((double)); 120 extern double modf __P((double, double *)); 121 122 extern double pow __P((double, double)); 123 extern double sqrt __P((double)); 124 125 extern double ceil __P((double)); 126 extern double fabs __P((double)); 127 extern double floor __P((double)); 128 extern double fmod __P((double, double)); 129 130 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 131 extern double erf __P((double)); 132 extern double erfc __P((double)); 133 extern double gamma __P((double)); 134 extern double hypot __P((double, double)); 135 extern int isinf __P((double)); 136 extern int isnan __P((double)); 137 extern int finite __P((double)); 138 extern double j0 __P((double)); 139 extern double j1 __P((double)); 140 extern double jn __P((int, double)); 141 extern double lgamma __P((double)); 142 extern double y0 __P((double)); 143 extern double y1 __P((double)); 144 extern double yn __P((int, double)); 145 146 #if !defined(_XOPEN_SOURCE) 147 extern double acosh __P((double)); 148 extern double asinh __P((double)); 149 extern double atanh __P((double)); 150 extern double cbrt __P((double)); 151 extern double logb __P((double)); 152 extern double nextafter __P((double, double)); 153 extern double remainder __P((double, double)); 154 extern double scalb __P((double, double)); 155 156 #ifndef __cplusplus 157 extern int matherr __P((struct exception *)); 158 #endif 159 160 /* 161 * IEEE Test Vector 162 */ 163 extern double significand __P((double)); 164 165 /* 166 * Functions callable from C, intended to support IEEE arithmetic. 167 */ 168 extern double copysign __P((double, double)); 169 extern int ilogb __P((double)); 170 extern double rint __P((double)); 171 extern double scalbn __P((double, int)); 172 173 /* 174 * BSD math library entry points 175 */ 176 extern double cabs(); 177 extern double drem __P((double, double)); 178 extern double expm1 __P((double)); 179 extern double log1p __P((double)); 180 181 /* 182 * Reentrant version of gamma & lgamma; passes signgam back by reference 183 * as the second argument; user must allocate space for signgam. 184 */ 185 #ifdef _REENTRANT 186 extern double gamma_r __P((double, int *)); 187 extern double lgamma_r __P((double, int *)); 188 #endif /* _REENTRANT */ 189 190 191 /* float versions of ANSI/POSIX functions */ 192 extern float acosf __P((float)); 193 extern float asinf __P((float)); 194 extern float atanf __P((float)); 195 extern float atan2f __P((float, float)); 196 extern float cosf __P((float)); 197 extern float sinf __P((float)); 198 extern float tanf __P((float)); 199 200 extern float coshf __P((float)); 201 extern float sinhf __P((float)); 202 extern float tanhf __P((float)); 203 204 extern float expf __P((float)); 205 extern float frexpf __P((float, int *)); 206 extern float ldexpf __P((float, int)); 207 extern float logf __P((float)); 208 extern float log10f __P((float)); 209 extern float modff __P((float, float *)); 210 211 extern float powf __P((float, float)); 212 extern float sqrtf __P((float)); 213 214 extern float ceilf __P((float)); 215 extern float fabsf __P((float)); 216 extern float floorf __P((float)); 217 extern float fmodf __P((float, float)); 218 219 extern float erff __P((float)); 220 extern float erfcf __P((float)); 221 extern float gammaf __P((float)); 222 extern float hypotf __P((float, float)); 223 extern int isnanf __P((float)); 224 extern int finitef __P((float)); 225 extern float j0f __P((float)); 226 extern float j1f __P((float)); 227 extern float jnf __P((int, float)); 228 extern float lgammaf __P((float)); 229 extern float y0f __P((float)); 230 extern float y1f __P((float)); 231 extern float ynf __P((int, float)); 232 233 extern float acoshf __P((float)); 234 extern float asinhf __P((float)); 235 extern float atanhf __P((float)); 236 extern float cbrtf __P((float)); 237 extern float logbf __P((float)); 238 extern float nextafterf __P((float, float)); 239 extern float remainderf __P((float, float)); 240 extern float scalbf __P((float, float)); 241 242 /* 243 * float version of IEEE Test Vector 244 */ 245 extern float significandf __P((float)); 246 247 /* 248 * Float versions of functions callable from C, intended to support 249 * IEEE arithmetic. 250 */ 251 extern float copysignf __P((float, float)); 252 extern int ilogbf __P((float)); 253 extern float rintf __P((float)); 254 extern float scalbnf __P((float, int)); 255 256 /* 257 * float versions of BSD math library entry points 258 */ 259 extern float cabsf (); 260 extern float dremf __P((float, float)); 261 extern float expm1f __P((float)); 262 extern float log1pf __P((float)); 263 264 /* 265 * Float versions of reentrant version of gamma & lgamma; passes 266 * signgam back by reference as the second argument; user must 267 * allocate space for signgam. 268 */ 269 #ifdef _REENTRANT 270 extern float gammaf_r __P((float, int *)); 271 extern float lgammaf_r __P((float, int *)); 272 #endif /* _REENTRANT */ 273 274 #endif /* !_XOPEN_SOURCE */ 275 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ 276 __END_DECLS 277 278 #endif /* _MATH_H_ */ 279
Indexes created Mon Sep 22 13:09:51 GMT 2025