1 /* $NetBSD: math.h,v 1.21 2000/01/04 14:20:05 kleink 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 #include <machine/math.h> 24 25 /* 26 * ANSI/POSIX 27 */ 28 extern __const char __infinity[]; 29 #define HUGE_VAL (*(__const double *)(__const void *)__infinity) 30 31 /* 32 * XOPEN/SVID 33 */ 34 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \ 35 defined(_XOPEN_SOURCE) 36 #define M_E 2.7182818284590452354 /* e */ 37 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 38 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 39 #define M_LN2 0.69314718055994530942 /* log e2 */ 40 #define M_LN10 2.30258509299404568402 /* log e10 */ 41 #define M_PI 3.14159265358979323846 /* pi */ 42 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 43 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 44 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 45 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 46 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 47 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 48 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 49 50 #define MAXFLOAT ((float)3.40282346638528860e+38) 51 extern int signgam; 52 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE || _XOPEN_SOURCE */ 53 54 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 55 !defined(_XOPEN_SOURCE) 56 enum fdversion {fdlibm_ieee = -1, fdlibm_svid, fdlibm_xopen, fdlibm_posix}; 57 58 #define _LIB_VERSION_TYPE enum fdversion 59 #define _LIB_VERSION _fdlib_version 60 61 /* if global variable _LIB_VERSION is not desirable, one may 62 * change the following to be a constant by: 63 * #define _LIB_VERSION_TYPE const enum version 64 * In that case, after one initializes the value _LIB_VERSION (see 65 * s_lib_version.c) during compile time, it cannot be modified 66 * in the middle of a program 67 */ 68 extern _LIB_VERSION_TYPE _LIB_VERSION; 69 70 #define _IEEE_ fdlibm_ieee 71 #define _SVID_ fdlibm_svid 72 #define _XOPEN_ fdlibm_xopen 73 #define _POSIX_ fdlibm_posix 74 75 #ifndef __cplusplus 76 struct exception { 77 int type; 78 char *name; 79 double arg1; 80 double arg2; 81 double retval; 82 }; 83 #endif 84 85 #define HUGE MAXFLOAT 86 87 /* 88 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 89 * (one may replace the following line by "#include <values.h>") 90 */ 91 92 #define X_TLOSS 1.41484755040568800000e+16 93 94 #define DOMAIN 1 95 #define SING 2 96 #define OVERFLOW 3 97 #define UNDERFLOW 4 98 #define TLOSS 5 99 #define PLOSS 6 100 101 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 102 103 __BEGIN_DECLS 104 /* 105 * ANSI/POSIX 106 */ 107 extern double acos __P((double)); 108 extern double asin __P((double)); 109 extern double atan __P((double)); 110 extern double atan2 __P((double, double)); 111 extern double cos __P((double)); 112 extern double sin __P((double)); 113 extern double tan __P((double)); 114 115 extern double cosh __P((double)); 116 extern double sinh __P((double)); 117 extern double tanh __P((double)); 118 119 extern double exp __P((double)); 120 extern double frexp __P((double, int *)); 121 extern double ldexp __P((double, int)); 122 extern double log __P((double)); 123 extern double log10 __P((double)); 124 extern double modf __P((double, double *)); 125 126 extern double pow __P((double, double)); 127 extern double sqrt __P((double)); 128 129 extern double ceil __P((double)); 130 extern double fabs __P((double)); 131 extern double floor __P((double)); 132 extern double fmod __P((double, double)); 133 134 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) || \ 135 defined(_XOPEN_SOURCE) 136 extern double erf __P((double)); 137 extern double erfc __P((double)); 138 extern double gamma __P((double)); 139 extern double hypot __P((double, double)); 140 extern int isnan __P((double)); 141 extern int finite __P((double)); 142 extern double j0 __P((double)); 143 extern double j1 __P((double)); 144 extern double jn __P((int, double)); 145 extern double lgamma __P((double)); 146 extern double y0 __P((double)); 147 extern double y1 __P((double)); 148 extern double yn __P((int, double)); 149 150 #if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 151 extern double acosh __P((double)); 152 extern double asinh __P((double)); 153 extern double atanh __P((double)); 154 extern double cbrt __P((double)); 155 extern double expm1 __P((double)); 156 extern int ilogb __P((double)); 157 extern double log1p __P((double)); 158 extern double logb __P((double)); 159 extern double nextafter __P((double, double)); 160 extern double remainder __P((double, double)); 161 extern double rint __P((double)); 162 extern double scalb __P((double, double)); 163 #endif /* !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE - 0) >= 500 */ 164 #endif /* !_ANSI_SOURCE) && !_POSIX_C_SOURCE || _XOPEN_SOURCE */ 165 166 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 167 !defined(_XOPEN_SOURCE) 168 #ifndef __cplusplus 169 extern int matherr __P((struct exception *)); 170 #endif 171 172 /* 173 * IEEE Test Vector 174 */ 175 extern double significand __P((double)); 176 177 /* 178 * Functions callable from C, intended to support IEEE arithmetic. 179 */ 180 extern double copysign __P((double, double)); 181 extern double scalbn __P((double, int)); 182 183 /* 184 * BSD math library entry points 185 */ 186 extern double cabs __P((/* struct complex { double r; double i; } */)); 187 extern double drem __P((double, double)); 188 189 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 190 191 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 192 !defined(_XOPEN_SOURCE) || defined(_REENTRANT) 193 /* 194 * Reentrant version of gamma & lgamma; passes signgam back by reference 195 * as the second argument; user must allocate space for signgam. 196 */ 197 extern double gamma_r __P((double, int *)); 198 extern double lgamma_r __P((double, int *)); 199 #endif /* !... || _REENTRANT */ 200 201 202 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 203 !defined(_XOPEN_SOURCE) 204 extern int isinf __P((double)); 205 206 /* float versions of ANSI/POSIX functions */ 207 extern float acosf __P((float)); 208 extern float asinf __P((float)); 209 extern float atanf __P((float)); 210 extern float atan2f __P((float, float)); 211 extern float cosf __P((float)); 212 extern float sinf __P((float)); 213 extern float tanf __P((float)); 214 215 extern float coshf __P((float)); 216 extern float sinhf __P((float)); 217 extern float tanhf __P((float)); 218 219 extern float expf __P((float)); 220 extern float frexpf __P((float, int *)); 221 extern float ldexpf __P((float, int)); 222 extern float logf __P((float)); 223 extern float log10f __P((float)); 224 extern float modff __P((float, float *)); 225 226 extern float powf __P((float, float)); 227 extern float sqrtf __P((float)); 228 229 extern float ceilf __P((float)); 230 extern float fabsf __P((float)); 231 extern float floorf __P((float)); 232 extern float fmodf __P((float, float)); 233 234 extern float erff __P((float)); 235 extern float erfcf __P((float)); 236 extern float gammaf __P((float)); 237 extern float hypotf __P((float, float)); 238 extern int isinff __P((float)); 239 extern int isnanf __P((float)); 240 extern int finitef __P((float)); 241 extern float j0f __P((float)); 242 extern float j1f __P((float)); 243 extern float jnf __P((int, float)); 244 extern float lgammaf __P((float)); 245 extern float y0f __P((float)); 246 extern float y1f __P((float)); 247 extern float ynf __P((int, float)); 248 249 extern float acoshf __P((float)); 250 extern float asinhf __P((float)); 251 extern float atanhf __P((float)); 252 extern float cbrtf __P((float)); 253 extern float logbf __P((float)); 254 extern float nextafterf __P((float, float)); 255 extern float remainderf __P((float, float)); 256 extern float scalbf __P((float, float)); 257 258 /* 259 * float version of IEEE Test Vector 260 */ 261 extern float significandf __P((float)); 262 263 /* 264 * Float versions of functions callable from C, intended to support 265 * IEEE arithmetic. 266 */ 267 extern float copysignf __P((float, float)); 268 extern int ilogbf __P((float)); 269 extern float rintf __P((float)); 270 extern float scalbnf __P((float, int)); 271 272 /* 273 * float versions of BSD math library entry points 274 */ 275 extern float cabsf __P((/* struct complex { float r; float i; } */)); 276 extern float dremf __P((float, float)); 277 extern float expm1f __P((float)); 278 extern float log1pf __P((float)); 279 #endif /* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */ 280 281 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \ 282 !defined(_XOPEN_SOURCE) || defined(_REENTRANT) 283 /* 284 * Float versions of reentrant version of gamma & lgamma; passes 285 * signgam back by reference as the second argument; user must 286 * allocate space for signgam. 287 */ 288 extern float gammaf_r __P((float, int *)); 289 extern float lgammaf_r __P((float, int *)); 290 #endif /* !... || _REENTRANT */ 291 292 __END_DECLS 293 294 #endif /* _MATH_H_ */ 295