math.h revision 1.10
1 /* $NetBSD: math.h,v 1.10 1994/10/26 00:56:05 cgd 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 struct exception { 69 int type; 70 char *name; 71 double arg1; 72 double arg2; 73 double retval; 74 }; 75 76 #define HUGE MAXFLOAT 77 78 /* 79 * set X_TLOSS = pi*2**52, which is possibly defined in <values.h> 80 * (one may replace the following line by "#include <values.h>") 81 */ 82 83 #define X_TLOSS 1.41484755040568800000e+16 84 85 #define DOMAIN 1 86 #define SING 2 87 #define OVERFLOW 3 88 #define UNDERFLOW 4 89 #define TLOSS 5 90 #define PLOSS 6 91 92 #endif /* !_XOPEN_SOURCE */ 93 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ 94 95 96 #include <sys/cdefs.h> 97 __BEGIN_DECLS 98 /* 99 * ANSI/POSIX 100 */ 101 extern double acos __P((double)); 102 extern double asin __P((double)); 103 extern double atan __P((double)); 104 extern double atan2 __P((double, double)); 105 extern double cos __P((double)); 106 extern double sin __P((double)); 107 extern double tan __P((double)); 108 109 extern double cosh __P((double)); 110 extern double sinh __P((double)); 111 extern double tanh __P((double)); 112 113 extern double exp __P((double)); 114 extern double frexp __P((double, int *)); 115 extern double ldexp __P((double, int)); 116 extern double log __P((double)); 117 extern double log10 __P((double)); 118 extern double modf __P((double, double *)); 119 120 extern double pow __P((double, double)); 121 extern double sqrt __P((double)); 122 123 extern double ceil __P((double)); 124 extern double fabs __P((double)); 125 extern double floor __P((double)); 126 extern double fmod __P((double, double)); 127 128 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE) 129 extern double erf __P((double)); 130 extern double erfc __P((double)); 131 extern double gamma __P((double)); 132 extern double hypot __P((double, double)); 133 extern int isinf __P((double)); 134 extern int isnan __P((double)); 135 extern int finite __P((double)); 136 extern double j0 __P((double)); 137 extern double j1 __P((double)); 138 extern double jn __P((int, double)); 139 extern double lgamma __P((double)); 140 extern double y0 __P((double)); 141 extern double y1 __P((double)); 142 extern double yn __P((int, double)); 143 144 #if !defined(_XOPEN_SOURCE) 145 extern double acosh __P((double)); 146 extern double asinh __P((double)); 147 extern double atanh __P((double)); 148 extern double cbrt __P((double)); 149 extern double logb __P((double)); 150 extern double nextafter __P((double, double)); 151 extern double remainder __P((double, double)); 152 extern double scalb __P((double, double)); 153 154 extern int matherr __P((struct exception *)); 155 156 /* 157 * IEEE Test Vector 158 */ 159 extern double significand __P((double)); 160 161 /* 162 * Functions callable from C, intended to support IEEE arithmetic. 163 */ 164 extern double copysign __P((double, double)); 165 extern int ilogb __P((double)); 166 extern double rint __P((double)); 167 extern double scalbn __P((double, int)); 168 169 /* 170 * BSD math library entry points 171 */ 172 extern double cabs(); 173 extern double drem __P((double, double)); 174 extern double expm1 __P((double)); 175 extern double log1p __P((double)); 176 177 /* 178 * Reentrant version of gamma & lgamma; passes signgam back by reference 179 * as the second argument; user must allocate space for signgam. 180 */ 181 #ifdef _REENTRANT 182 extern double gamma_r __P((double, int *)); 183 extern double lgamma_r __P((double, int *)); 184 #endif /* _REENTRANT */ 185 186 187 /* float versions of ANSI/POSIX functions */ 188 extern float acosf __P((float)); 189 extern float asinf __P((float)); 190 extern float atanf __P((float)); 191 extern float atan2f __P((float, float)); 192 extern float cosf __P((float)); 193 extern float sinf __P((float)); 194 extern float tanf __P((float)); 195 196 extern float coshf __P((float)); 197 extern float sinhf __P((float)); 198 extern float tanhf __P((float)); 199 200 extern float expf __P((float)); 201 extern float frexpf __P((float, int *)); 202 extern float ldexpf __P((float, int)); 203 extern float logf __P((float)); 204 extern float log10f __P((float)); 205 extern float modff __P((float, float *)); 206 207 extern float powf __P((float, float)); 208 extern float sqrtf __P((float)); 209 210 extern float ceilf __P((float)); 211 extern float fabsf __P((float)); 212 extern float floorf __P((float)); 213 extern float fmodf __P((float, float)); 214 215 extern float erff __P((float)); 216 extern float erfcf __P((float)); 217 extern float gammaf __P((float)); 218 extern float hypotf __P((float, float)); 219 extern int isnanf __P((float)); 220 extern int finitef __P((float)); 221 extern float j0f __P((float)); 222 extern float j1f __P((float)); 223 extern float jnf __P((int, float)); 224 extern float lgammaf __P((float)); 225 extern float y0f __P((float)); 226 extern float y1f __P((float)); 227 extern float ynf __P((int, float)); 228 229 extern float acoshf __P((float)); 230 extern float asinhf __P((float)); 231 extern float atanhf __P((float)); 232 extern float cbrtf __P((float)); 233 extern float logbf __P((float)); 234 extern float nextafterf __P((float, float)); 235 extern float remainderf __P((float, float)); 236 extern float scalbf __P((float, float)); 237 238 /* 239 * float version of IEEE Test Vector 240 */ 241 extern float significandf __P((float)); 242 243 /* 244 * Float versions of functions callable from C, intended to support 245 * IEEE arithmetic. 246 */ 247 extern float copysignf __P((float, float)); 248 extern int ilogbf __P((float)); 249 extern float rintf __P((float)); 250 extern float scalbnf __P((float, int)); 251 252 /* 253 * float versions of BSD math library entry points 254 */ 255 extern float cabsf (); 256 extern float dremf __P((float, float)); 257 extern float expm1f __P((float)); 258 extern float log1pf __P((float)); 259 260 /* 261 * Float versions of reentrant version of gamma & lgamma; passes 262 * signgam back by reference as the second argument; user must 263 * allocate space for signgam. 264 */ 265 #ifdef _REENTRANT 266 extern float gammaf_r __P((float, int *)); 267 extern float lgammaf_r __P((float, int *)); 268 #endif /* _REENTRANT */ 269 270 #endif /* !_XOPEN_SOURCE */ 271 #endif /* !_ANSI_SOURCE && !_POSIX_SOURCE */ 272 __END_DECLS 273 274 #endif /* _MATH_H_ */ 275
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