1 /* 2 * ==================================================== 3 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. 4 * 5 * Developed at SunPro, a Sun Microsystems, Inc. business. 6 * Permission to use, copy, modify, and distribute this 7 * software is freely granted, provided that this notice 8 * is preserved. 9 * ==================================================== 10 */ 11 12 /* 13 * from: @(#)fdlibm.h 5.1 93/09/24 14 * $FreeBSD$ 15 */ 16 17 #ifndef _MATH_H_ 18 #define _MATH_H_ 19 20 #include <sys/cdefs.h> 21 #include <limits.h> 22 23 #if !defined(__BIONIC_NO_MATH_INLINES) 24 #define __BIONIC_MATH_INLINE(__def) extern __inline__ __always_inline __attribute__((gnu_inline)) __attribute__((__artificial__)) __def 25 #else 26 #define __BIONIC_MATH_INLINE(__def) 27 #endif 28 29 __BEGIN_DECLS 30 #pragma GCC visibility push(default) 31 32 #define HUGE_VAL __builtin_huge_val() 33 34 #if __ISO_C_VISIBLE >= 1999 35 #define FP_ILOGB0 (-INT_MAX) 36 #define FP_ILOGBNAN INT_MAX 37 38 #define HUGE_VALF __builtin_huge_valf() 39 #define HUGE_VALL __builtin_huge_vall() 40 #define INFINITY __builtin_inff() 41 #define NAN __builtin_nanf("") 42 43 #define MATH_ERRNO 1 44 #define MATH_ERREXCEPT 2 45 #define math_errhandling MATH_ERREXCEPT 46 47 #if defined(__FP_FAST_FMA) 48 #define FP_FAST_FMA 1 49 #endif 50 #if defined(__FP_FAST_FMAF) 51 #define FP_FAST_FMAF 1 52 #endif 53 #if defined(__FP_FAST_FMAL) 54 #define FP_FAST_FMAL 1 55 #endif 56 57 /* Symbolic constants to classify floating point numbers. */ 58 #define FP_INFINITE 0x01 59 #define FP_NAN 0x02 60 #define FP_NORMAL 0x04 61 #define FP_SUBNORMAL 0x08 62 #define FP_ZERO 0x10 63 #define fpclassify(x) \ 64 __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x) 65 66 #define isfinite(x) __builtin_isfinite(x) 67 #define isinf(x) __builtin_isinf(x) 68 #define isnan(x) __builtin_isnan(x) 69 #define isnormal(x) __builtin_isnormal(x) 70 71 #define isgreater(x, y) __builtin_isgreater((x), (y)) 72 #define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y)) 73 #define isless(x, y) __builtin_isless((x), (y)) 74 #define islessequal(x, y) __builtin_islessequal((x), (y)) 75 #define islessgreater(x, y) __builtin_islessgreater((x), (y)) 76 #define isunordered(x, y) __builtin_isunordered((x), (y)) 77 78 #define signbit(x) \ 79 ((sizeof(x) == sizeof(float)) ? __builtin_signbitf(x) \ 80 : (sizeof(x) == sizeof(double)) ? __builtin_signbit(x) \ 81 : __builtin_signbitl(x)) 82 83 typedef double __double_t; 84 typedef __double_t double_t; 85 typedef float __float_t; 86 typedef __float_t float_t; 87 #endif /* __ISO_C_VISIBLE >= 1999 */ 88 89 /* 90 * XOPEN/SVID 91 */ 92 #if __BSD_VISIBLE || __XSI_VISIBLE 93 #define M_E 2.7182818284590452354 /* e */ 94 #define M_LOG2E 1.4426950408889634074 /* log 2e */ 95 #define M_LOG10E 0.43429448190325182765 /* log 10e */ 96 #define M_LN2 0.69314718055994530942 /* log e2 */ 97 #define M_LN10 2.30258509299404568402 /* log e10 */ 98 #define M_PI 3.14159265358979323846 /* pi */ 99 #define M_PI_2 1.57079632679489661923 /* pi/2 */ 100 #define M_PI_4 0.78539816339744830962 /* pi/4 */ 101 #define M_1_PI 0.31830988618379067154 /* 1/pi */ 102 #define M_2_PI 0.63661977236758134308 /* 2/pi */ 103 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */ 104 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */ 105 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ 106 107 #define MAXFLOAT ((float)3.40282346638528860e+38) 108 extern int signgam; 109 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */ 110 111 #if __BSD_VISIBLE 112 #if 0 113 /* Old value from 4.4BSD-Lite math.h; this is probably better. */ 114 #define HUGE HUGE_VAL 115 #else 116 #define HUGE MAXFLOAT 117 #endif 118 #endif /* __BSD_VISIBLE */ 119 120 /* 121 * Most of these functions depend on the rounding mode and have the side 122 * effect of raising floating-point exceptions, so they are not declared 123 * as __pure2. In C99, FENV_ACCESS affects the purity of these functions. 124 */ 125 126 /* 127 * ANSI/POSIX 128 */ 129 int __fpclassifyd(double) __pure2; 130 int __fpclassifyf(float) __pure2; 131 int __fpclassifyl(long double) __pure2; 132 int __isfinitef(float) __pure2; 133 int __isfinite(double) __pure2; 134 int __isfinitel(long double) __pure2; 135 int __isinff(float) __pure2; 136 int __isinfl(long double) __pure2; 137 int __isnanf(float) __pure2; 138 int __isnanl(long double) __pure2; 139 int __isnormalf(float) __pure2; 140 int __isnormal(double) __pure2; 141 int __isnormall(long double) __pure2; 142 int __signbit(double) __pure2; 143 int __signbitf(float) __pure2; 144 int __signbitl(long double) __pure2; 145 146 double acos(double); 147 double asin(double); 148 double atan(double); 149 double atan2(double, double); 150 double cos(double); 151 double sin(double); 152 double tan(double); 153 154 double cosh(double); 155 double sinh(double); 156 double tanh(double); 157 158 double exp(double); 159 double frexp(double, int *); /* fundamentally !__pure2 */ 160 double ldexp(double, int); 161 double log(double); 162 double log10(double); 163 double modf(double, double *); /* fundamentally !__pure2 */ 164 165 double pow(double, double); 166 double sqrt(double); 167 168 double ceil(double); 169 double fabs(double) __pure2; 170 __BIONIC_MATH_INLINE(double fabs(double x) { return __builtin_fabs(x); }) 171 double floor(double); 172 double fmod(double, double); 173 174 /* 175 * These functions are not in C90. 176 */ 177 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE 178 double acosh(double); 179 double asinh(double); 180 double atanh(double); 181 double cbrt(double); 182 double erf(double); 183 double erfc(double); 184 double exp2(double); 185 double expm1(double); 186 double fma(double, double, double); 187 double hypot(double, double); 188 int ilogb(double) __pure2; 189 int (isinf)(double) __pure2; 190 int (isnan)(double) __pure2; 191 double lgamma(double); 192 long long llrint(double); 193 long long llround(double); 194 double log1p(double); 195 double log2(double); 196 double logb(double); 197 long lrint(double); 198 long lround(double); 199 double nan(const char *) __pure2; 200 double nextafter(double, double); 201 double remainder(double, double); 202 double remquo(double, double, int *); 203 double rint(double); 204 #endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */ 205 206 #if __BSD_VISIBLE || __XSI_VISIBLE 207 double j0(double); 208 double j1(double); 209 double jn(int, double); 210 double y0(double); 211 double y1(double); 212 double yn(int, double); 213 214 #if __XSI_VISIBLE <= 500 || __BSD_VISIBLE 215 double gamma(double); 216 #endif 217 218 #if __XSI_VISIBLE <= 600 || __BSD_VISIBLE 219 double scalb(double, double); 220 #endif 221 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */ 222 223 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 224 double copysign(double, double) __pure2; 225 double fdim(double, double); 226 double fmax(double, double) __pure2; 227 double fmin(double, double) __pure2; 228 double nearbyint(double); 229 double round(double); 230 double scalbln(double, long); 231 double scalbn(double, int); 232 double tgamma(double); 233 double trunc(double); 234 #endif 235 236 /* 237 * BSD math library entry points 238 */ 239 #if __BSD_VISIBLE 240 double drem(double, double); 241 int finite(double) __pure2; 242 int isnanf(float) __pure2; 243 long double significandl(long double); 244 245 /* 246 * Reentrant version of gamma & lgamma; passes signgam back by reference 247 * as the second argument; user must allocate space for signgam. 248 */ 249 double gamma_r(double, int *); 250 double lgamma_r(double, int *); 251 252 /* 253 * IEEE Test Vector 254 */ 255 double significand(double); 256 #endif /* __BSD_VISIBLE */ 257 258 /* float versions of ANSI/POSIX functions */ 259 #if __ISO_C_VISIBLE >= 1999 260 float acosf(float); 261 float asinf(float); 262 float atanf(float); 263 float atan2f(float, float); 264 float cosf(float); 265 float sinf(float); 266 float tanf(float); 267 268 float coshf(float); 269 float sinhf(float); 270 float tanhf(float); 271 272 float exp2f(float); 273 float expf(float); 274 float expm1f(float); 275 float frexpf(float, int *); /* fundamentally !__pure2 */ 276 int ilogbf(float) __pure2; 277 float ldexpf(float, int); 278 float log10f(float); 279 float log1pf(float); 280 float log2f(float); 281 float logf(float); 282 float modff(float, float *); /* fundamentally !__pure2 */ 283 284 float powf(float, float); 285 float sqrtf(float); 286 287 float ceilf(float); 288 float fabsf(float) __pure2; 289 __BIONIC_MATH_INLINE(float fabsf(float x) { return __builtin_fabsf(x); }) 290 float floorf(float); 291 float fmodf(float, float); 292 float roundf(float); 293 294 float erff(float); 295 float erfcf(float); 296 float hypotf(float, float); 297 float lgammaf(float); 298 float tgammaf(float); 299 300 float acoshf(float); 301 float asinhf(float); 302 float atanhf(float); 303 float cbrtf(float); 304 float logbf(float); 305 float copysignf(float, float) __pure2; 306 long long llrintf(float); 307 long long llroundf(float); 308 long lrintf(float); 309 long lroundf(float); 310 float nanf(const char *) __pure2; 311 float nearbyintf(float); 312 float nextafterf(float, float); 313 float remainderf(float, float); 314 float remquof(float, float, int *); 315 float rintf(float); 316 float scalblnf(float, long); 317 float scalbnf(float, int); 318 float truncf(float); 319 320 float fdimf(float, float); 321 float fmaf(float, float, float); 322 float fmaxf(float, float) __pure2; 323 float fminf(float, float) __pure2; 324 #endif 325 326 /* 327 * float versions of BSD math library entry points 328 */ 329 #if __BSD_VISIBLE 330 float dremf(float, float); 331 int finitef(float) __pure2; 332 float gammaf(float); 333 float j0f(float); 334 float j1f(float); 335 float jnf(int, float); 336 float scalbf(float, float); 337 float y0f(float); 338 float y1f(float); 339 float ynf(int, float); 340 341 /* 342 * Float versions of reentrant version of gamma & lgamma; passes 343 * signgam back by reference as the second argument; user must 344 * allocate space for signgam. 345 */ 346 float gammaf_r(float, int *); 347 float lgammaf_r(float, int *); 348 349 /* 350 * float version of IEEE Test Vector 351 */ 352 float significandf(float); 353 #endif /* __BSD_VISIBLE */ 354 355 /* 356 * long double versions of ISO/POSIX math functions 357 */ 358 #if __ISO_C_VISIBLE >= 1999 359 long double acoshl(long double); 360 long double acosl(long double); 361 long double asinhl(long double); 362 long double asinl(long double); 363 long double atan2l(long double, long double); 364 long double atanhl(long double); 365 long double atanl(long double); 366 long double cbrtl(long double); 367 long double ceill(long double); 368 long double copysignl(long double, long double) __pure2; 369 long double coshl(long double); 370 long double cosl(long double); 371 long double erfcl(long double); 372 long double erfl(long double); 373 long double exp2l(long double); 374 long double expl(long double); 375 long double expm1l(long double); 376 long double fabsl(long double) __pure2; 377 __BIONIC_MATH_INLINE(long double fabsl(long double x) { return __builtin_fabsl(x); }) 378 long double fdiml(long double, long double); 379 long double floorl(long double); 380 long double fmal(long double, long double, long double); 381 long double fmaxl(long double, long double) __pure2; 382 long double fminl(long double, long double) __pure2; 383 long double fmodl(long double, long double); 384 long double frexpl(long double value, int *); /* fundamentally !__pure2 */ 385 long double hypotl(long double, long double); 386 int ilogbl(long double) __pure2; 387 long double ldexpl(long double, int); 388 long double lgammal(long double); 389 long long llrintl(long double); 390 long long llroundl(long double); 391 long double log10l(long double); 392 long double log1pl(long double); 393 long double log2l(long double); 394 long double logbl(long double); 395 long double logl(long double); 396 long lrintl(long double); 397 long lroundl(long double); 398 long double modfl(long double, long double *); /* fundamentally !__pure2 */ 399 long double nanl(const char *) __pure2; 400 long double nearbyintl(long double); 401 long double nextafterl(long double, long double); 402 double nexttoward(double, long double); 403 float nexttowardf(float, long double); 404 long double nexttowardl(long double, long double); 405 long double powl(long double, long double); 406 long double remainderl(long double, long double); 407 long double remquol(long double, long double, int *); 408 long double rintl(long double); 409 long double roundl(long double); 410 long double scalblnl(long double, long); 411 long double scalbnl(long double, int); 412 long double sinhl(long double); 413 long double sinl(long double); 414 long double sqrtl(long double); 415 long double tanhl(long double); 416 long double tanl(long double); 417 long double tgammal(long double); 418 long double truncl(long double); 419 #endif /* __ISO_C_VISIBLE >= 1999 */ 420 421 #if __BSD_VISIBLE 422 long double lgammal_r(long double, int *); 423 #endif 424 425 #if defined(__USE_GNU) 426 void sincos(double, double*, double*); 427 void sincosf(float, float*, float*); 428 void sincosl(long double, long double*, long double*); 429 #endif /* __USE_GNU */ 430 431 #pragma GCC visibility pop 432 __END_DECLS 433 434 #endif /* !_MATH_H_ */ 435