math.h revision 1.25
1 /* $NetBSD: math.h,v 1.25 2003/04/28 23:16:13 bjh21 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 #include <sys/cdefs.h> 22 #include <sys/featuretest.h> 23 24 union __float_u { 25 unsigned char __dummy[sizeof(float)]; 26 float __val; 27 }; 28 29 union __double_u { 30 unsigned char __dummy[sizeof(double)]; 31 double __val; 32 }; 33 34 #include <machine/math.h> /* may use __float_u or __double_u */ 35 36 /* 37 * ANSI/POSIX 38 */ 39 extern __const union __double_u __infinity; 40 #define HUGE_VAL __infinity.__val 41 42 /* 43 * ISO C99 44 */ 45 #if defined(__HAVE_NANF) && \ 46 (!defined(_ANSI_SOURCE) && \ 47 (defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \ 48 defined(_NETBSD_SOURCE))) 49 extern __const union __float_u __nanf; 50 #define NAN __nanf.__val 51 #endif /* __HAVE_NANF && (!_ANSI_SOURCE && ....) */ 52 53 /* 54 * XOPEN/SVID 55 */ 56 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 57 #define M_E 2.7182818284590452354 /* e */ 58 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 59 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 60 #define M_LN2 0.69314718055994530942 /* log e2 */ 61 #define M_LN10 2.30258509299404568402 /* log e10 */ 62 #define M_PI 3.14159265358979323846 /* pi */ 63 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 64 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 65 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 66 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 67 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 68 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 69 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 70 71 #define MAXFLOAT ((float)3.40282346638528860e+38) 72 extern int signgam; 73 #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ 74 75 #if defined(_NETBSD_SOURCE) 76 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 77 78 #define _LIB_VERSION_TYPE enum fdversion 79 #define _LIB_VERSION _fdlib_version 80 81 /* if global variable _LIB_VERSION is not desirable, one may 82 * change the following to be a constant by: 83 * #define _LIB_VERSION_TYPE const enum version 84 * In that case, after one initializes the value _LIB_VERSION (see 85 * s_lib_version.c) during compile time, it cannot be modified 86 * in the middle of a program 87 */ 88 extern _LIB_VERSION_TYPE _LIB_VERSION; 89 90 #define _IEEE_ fdlibm_ieee 91 #define _SVID_ fdlibm_svid 92 #define _XOPEN_ fdlibm_xopen 93 #define _POSIX_ fdlibm_posix 94 95 #ifndef __cplusplus 96 struct exception { 97 int type; 98 char *name; 99 double arg1; 100 double arg2; 101 double retval; 102 }; 103 #endif 104 105 #define HUGE MAXFLOAT 106 107 /* 108 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 109 * (one may replace the following line by "#include <values.h>") 110 */ 111 112 #define X_TLOSS 1.41484755040568800000e+16 113 114 #define DOMAIN 1 115 #define SING 2 116 #define OVERFLOW 3 117 #define UNDERFLOW 4 118 #define TLOSS 5 119 #define PLOSS 6 120 121 #endif /* _NETBSD_SOURCE */ 122 123 __BEGIN_DECLS 124 /* 125 * ANSI/POSIX 126 */ 127 double acos __P((double)); 128 double asin __P((double)); 129 double atan __P((double)); 130 double atan2 __P((double, double)); 131 double cos __P((double)); 132 double sin __P((double)); 133 double tan __P((double)); 134 135 double cosh __P((double)); 136 double sinh __P((double)); 137 double tanh __P((double)); 138 139 double exp __P((double)); 140 double frexp __P((double, int *)); 141 double ldexp __P((double, int)); 142 double log __P((double)); 143 double log10 __P((double)); 144 double modf __P((double, double *)); 145 146 double pow __P((double, double)); 147 double sqrt __P((double)); 148 149 double ceil __P((double)); 150 double fabs __P((double)); 151 double floor __P((double)); 152 double fmod __P((double, double)); 153 154 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 155 double erf __P((double)); 156 double erfc __P((double)); 157 double gamma __P((double)); 158 double hypot __P((double, double)); 159 int isnan __P((double)); 160 int finite __P((double)); 161 double j0 __P((double)); 162 double j1 __P((double)); 163 double jn __P((int, double)); 164 double lgamma __P((double)); 165 double y0 __P((double)); 166 double y1 __P((double)); 167 double yn __P((int, double)); 168 169 #if (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE) 170 double acosh __P((double)); 171 double asinh __P((double)); 172 double atanh __P((double)); 173 double cbrt __P((double)); 174 double expm1 __P((double)); 175 int ilogb __P((double)); 176 double log1p __P((double)); 177 double logb __P((double)); 178 double nextafter __P((double, double)); 179 double remainder __P((double, double)); 180 double rint __P((double)); 181 double scalb __P((double, double)); 182 #endif /* (_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)*/ 183 #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ 184 185 #if defined(_NETBSD_SOURCE) 186 #ifndef __cplusplus 187 int matherr __P((struct exception *)); 188 #endif 189 190 /* 191 * IEEE Test Vector 192 */ 193 double significand __P((double)); 194 195 /* 196 * Functions callable from C, intended to support IEEE arithmetic. 197 */ 198 double copysign __P((double, double)); 199 double scalbn __P((double, int)); 200 201 /* 202 * BSD math library entry points 203 */ 204 #ifndef __MATH_PRIVATE__ 205 double cabs __P((/* struct complex { double r; double i; } */)); 206 #endif 207 double drem __P((double, double)); 208 209 #endif /* _NETBSD_SOURCE */ 210 211 #if defined(_NETBSD_SOURCE) || defined(_REENTRANT) 212 /* 213 * Reentrant version of gamma & lgamma; passes signgam back by reference 214 * as the second argument; user must allocate space for signgam. 215 */ 216 double gamma_r __P((double, int *)); 217 double lgamma_r __P((double, int *)); 218 #endif /* _NETBSD_SOURCE || _REENTRANT */ 219 220 221 #if defined(_NETBSD_SOURCE) 222 int isinf __P((double)); 223 224 /* float versions of ANSI/POSIX functions */ 225 float acosf __P((float)); 226 float asinf __P((float)); 227 float atanf __P((float)); 228 float atan2f __P((float, float)); 229 float cosf __P((float)); 230 float sinf __P((float)); 231 float tanf __P((float)); 232 233 float coshf __P((float)); 234 float sinhf __P((float)); 235 float tanhf __P((float)); 236 237 float expf __P((float)); 238 float frexpf __P((float, int *)); 239 float ldexpf __P((float, int)); 240 float logf __P((float)); 241 float log10f __P((float)); 242 float modff __P((float, float *)); 243 244 float powf __P((float, float)); 245 float sqrtf __P((float)); 246 247 float ceilf __P((float)); 248 float fabsf __P((float)); 249 float floorf __P((float)); 250 float fmodf __P((float, float)); 251 252 float erff __P((float)); 253 float erfcf __P((float)); 254 float gammaf __P((float)); 255 float hypotf __P((float, float)); 256 int isinff __P((float)); 257 int isnanf __P((float)); 258 int finitef __P((float)); 259 float j0f __P((float)); 260 float j1f __P((float)); 261 float jnf __P((int, float)); 262 float lgammaf __P((float)); 263 float y0f __P((float)); 264 float y1f __P((float)); 265 float ynf __P((int, float)); 266 267 float acoshf __P((float)); 268 float asinhf __P((float)); 269 float atanhf __P((float)); 270 float cbrtf __P((float)); 271 float logbf __P((float)); 272 float nextafterf __P((float, float)); 273 float remainderf __P((float, float)); 274 float scalbf __P((float, float)); 275 276 /* 277 * float version of IEEE Test Vector 278 */ 279 float significandf __P((float)); 280 281 /* 282 * Float versions of functions callable from C, intended to support 283 * IEEE arithmetic. 284 */ 285 float copysignf __P((float, float)); 286 int ilogbf __P((float)); 287 float rintf __P((float)); 288 float scalbnf __P((float, int)); 289 290 /* 291 * float versions of BSD math library entry points 292 */ 293 #ifndef __MATH_PRIVATE__ 294 float cabsf __P((/* struct complex { float r; float i; } */)); 295 #endif 296 float dremf __P((float, float)); 297 float expm1f __P((float)); 298 float log1pf __P((float)); 299 #endif /* _NETBSD_SOURCE */ 300 301 #if defined(_NETBSD_SOURCE) || defined(_REENTRANT) 302 /* 303 * Float versions of reentrant version of gamma & lgamma; passes 304 * signgam back by reference as the second argument; user must 305 * allocate space for signgam. 306 */ 307 float gammaf_r __P((float, int *)); 308 float lgammaf_r __P((float, int *)); 309 #endif /* !... || _REENTRANT */ 310 311 __END_DECLS 312 313 #endif /* _MATH_H_ */ 314
Indexes created Mon Sep 22 13:09:51 GMT 2025