2 * ====================================================
3 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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
9 * ====================================================
18 #include <sys/_types.h>
19 #include <machine/_limits.h>
24 extern const union __infinity_un {
25 unsigned char __uc[8];
29 extern const union __nan_un {
30 unsigned char __uc[sizeof(float)];
34 #if __GNUC_PREREQ__(3, 3)
35 #define __MATH_BUILTIN_CONSTANTS
38 #if __GNUC_PREREQ__(3, 0)
39 #define __MATH_BUILTIN_RELOPS
42 #ifdef __MATH_BUILTIN_CONSTANTS
43 #define HUGE_VAL __builtin_huge_val()
45 #define HUGE_VAL (__infinity.__ud)
48 #if __ISO_C_VISIBLE >= 1999
49 #define FP_ILOGB0 (-__INT_MAX)
50 #define FP_ILOGBNAN __INT_MAX
52 #ifdef __MATH_BUILTIN_CONSTANTS
53 #define HUGE_VALF __builtin_huge_valf()
54 #define HUGE_VALL __builtin_huge_vall()
55 #define INFINITY __builtin_inff()
56 #define NAN __builtin_nanf("")
58 #define HUGE_VALF (float)HUGE_VAL
59 #define HUGE_VALL (long double)HUGE_VAL
60 #define INFINITY HUGE_VALF
61 #define NAN (__nan.__uf)
62 #endif /* __MATH_BUILTIN_CONSTANTS */
65 #define MATH_ERREXCEPT 2
66 #define math_errhandling MATH_ERREXCEPT
68 #define FP_FAST_FMAF 1
70 /* Symbolic constants to classify floating point numbers. */
71 #define FP_INFINITE 0x01
73 #define FP_NORMAL 0x04
74 #define FP_SUBNORMAL 0x08
77 #if __STDC_VERSION__ >= 201112L || __has_extension(c_generic_selections)
78 #define __fp_type_select(x, f, d, ld) __extension__ _Generic((x), \
82 #elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)
83 #define __fp_type_select(x, f, d, ld) __builtin_choose_expr( \
84 __builtin_types_compatible_p(__typeof(x), long double), ld(x), \
85 __builtin_choose_expr( \
86 __builtin_types_compatible_p(__typeof(x), double), d(x), \
87 __builtin_choose_expr( \
88 __builtin_types_compatible_p(__typeof(x), float), f(x), (void)0)))
90 #define __fp_type_select(x, f, d, ld) \
91 ((sizeof(x) == sizeof(float)) ? f(x) \
92 : (sizeof(x) == sizeof(double)) ? d(x) \
96 #define fpclassify(x) \
97 __fp_type_select(x, __fpclassifyf, __fpclassifyd, __fpclassifyl)
98 #define isfinite(x) __fp_type_select(x, __isfinitef, __isfinite, __isfinitel)
99 #define isinf(x) __fp_type_select(x, __isinff, __isinf, __isinfl)
101 __fp_type_select(x, __inline_isnanf, __inline_isnan, __inline_isnanl)
102 #define isnormal(x) __fp_type_select(x, __isnormalf, __isnormal, __isnormall)
104 #ifdef __MATH_BUILTIN_RELOPS
105 #define isgreater(x, y) __builtin_isgreater((x), (y))
106 #define isgreaterequal(x, y) __builtin_isgreaterequal((x), (y))
107 #define isless(x, y) __builtin_isless((x), (y))
108 #define islessequal(x, y) __builtin_islessequal((x), (y))
109 #define islessgreater(x, y) __builtin_islessgreater((x), (y))
110 #define isunordered(x, y) __builtin_isunordered((x), (y))
112 #define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
113 #define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
114 #define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
115 #define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
116 #define islessgreater(x, y) (!isunordered((x), (y)) && \
117 ((x) > (y) || (y) > (x)))
118 #define isunordered(x, y) (isnan(x) || isnan(y))
119 #endif /* __MATH_BUILTIN_RELOPS */
121 #define signbit(x) __fp_type_select(x, __signbitf, __signbit, __signbitl)
123 typedef __double_t double_t;
124 typedef __float_t float_t;
125 #endif /* __ISO_C_VISIBLE >= 1999 */
130 #if __BSD_VISIBLE || __XSI_VISIBLE
131 #define M_E 2.7182818284590452354 /* e */
132 #define M_LOG2E 1.4426950408889634074 /* log 2e */
133 #define M_LOG10E 0.43429448190325182765 /* log 10e */
134 #define M_LN2 0.69314718055994530942 /* log e2 */
135 #define M_LN10 2.30258509299404568402 /* log e10 */
136 #define M_PI 3.14159265358979323846 /* pi */
137 #define M_PI_2 1.57079632679489661923 /* pi/2 */
138 #define M_PI_4 0.78539816339744830962 /* pi/4 */
139 #define M_1_PI 0.31830988618379067154 /* 1/pi */
140 #define M_2_PI 0.63661977236758134308 /* 2/pi */
141 #define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
142 #define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
143 #define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
145 #define MAXFLOAT ((float)3.40282346638528860e+38)
147 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */
151 /* Old value from 4.4BSD-Lite math.h; this is probably better. */
152 #define HUGE HUGE_VAL
154 #define HUGE MAXFLOAT
156 #endif /* __BSD_VISIBLE */
159 * Most of these functions depend on the rounding mode and have the side
160 * effect of raising floating-point exceptions, so they are not declared
161 * as __pure2. In C99, FENV_ACCESS affects the purity of these functions.
167 int __fpclassifyd(double) __pure2;
168 int __fpclassifyf(float) __pure2;
169 int __fpclassifyl(long double) __pure2;
170 int __isfinitef(float) __pure2;
171 int __isfinite(double) __pure2;
172 int __isfinitel(long double) __pure2;
173 int __isinff(float) __pure2;
174 int __isinf(double) __pure2;
175 int __isinfl(long double) __pure2;
176 int __isnormalf(float) __pure2;
177 int __isnormal(double) __pure2;
178 int __isnormall(long double) __pure2;
179 int __signbit(double) __pure2;
180 int __signbitf(float) __pure2;
181 int __signbitl(long double) __pure2;
184 __inline_isnan(const double __x)
191 __inline_isnanf(const float __x)
198 __inline_isnanl(const long double __x)
205 * Define the following aliases, for compatibility with glibc and CUDA.
207 #define __isnan __inline_isnan
208 #define __isnanf __inline_isnanf
211 * Version 2 of the Single UNIX Specification (UNIX98) defined isnan() and
212 * isinf() as functions taking double. C99, and the subsequent POSIX revisions
213 * (SUSv3, POSIX.1-2001, define it as a macro that accepts any real floating
214 * point type. If we are targeting SUSv2 and C99 or C11 (or C++11) then we
215 * expose the newer definition, assuming that the language spec takes
216 * precedence over the operating system interface spec.
218 #if __XSI_VISIBLE > 0 && __XSI_VISIBLE < 600 && __ISO_C_VISIBLE < 1999
228 double atan2(double, double);
238 double frexp(double, int *); /* fundamentally !__pure2 */
239 double ldexp(double, int);
241 double log10(double);
242 double modf(double, double *); /* fundamentally !__pure2 */
244 double pow(double, double);
248 double fabs(double) __pure2;
249 double floor(double);
250 double fmod(double, double);
253 * These functions are not in C90.
255 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE
256 double acosh(double);
257 double asinh(double);
258 double atanh(double);
263 double expm1(double);
264 double fma(double, double, double);
265 double hypot(double, double);
266 int ilogb(double) __pure2;
267 double lgamma(double);
268 long long llrint(double);
269 long long llround(double);
270 double log1p(double);
275 double nan(const char *) __pure2;
276 double nextafter(double, double);
277 double remainder(double, double);
278 double remquo(double, double, int *);
280 #endif /* __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 || __XSI_VISIBLE */
282 #if __BSD_VISIBLE || __XSI_VISIBLE
285 double jn(int, double);
288 double yn(int, double);
290 #if __XSI_VISIBLE <= 500 || __BSD_VISIBLE
291 double gamma(double);
294 #if __XSI_VISIBLE <= 600 || __BSD_VISIBLE
295 double scalb(double, double);
297 #endif /* __BSD_VISIBLE || __XSI_VISIBLE */
299 #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999
300 double copysign(double, double) __pure2;
301 double fdim(double, double);
302 double fmax(double, double) __pure2;
303 double fmin(double, double) __pure2;
304 double nearbyint(double);
305 double round(double);
306 double scalbln(double, long);
307 double scalbn(double, int);
308 double tgamma(double);
309 double trunc(double);
313 * BSD math library entry points
316 double drem(double, double);
317 int finite(double) __pure2;
318 int isnanf(float) __pure2;
321 * Reentrant version of gamma & lgamma; passes signgam back by reference
322 * as the second argument; user must allocate space for signgam.
324 double gamma_r(double, int *);
325 double lgamma_r(double, int *);
330 double significand(double);
331 #endif /* __BSD_VISIBLE */
333 /* float versions of ANSI/POSIX functions */
334 #if __ISO_C_VISIBLE >= 1999
338 float atan2f(float, float);
350 float frexpf(float, int *); /* fundamentally !__pure2 */
351 int ilogbf(float) __pure2;
352 float ldexpf(float, int);
357 float modff(float, float *); /* fundamentally !__pure2 */
359 float powf(float, float);
363 float fabsf(float) __pure2;
365 float fmodf(float, float);
370 float hypotf(float, float);
371 float lgammaf(float);
372 float tgammaf(float);
379 float copysignf(float, float) __pure2;
380 long long llrintf(float);
381 long long llroundf(float);
384 float nanf(const char *) __pure2;
385 float nearbyintf(float);
386 float nextafterf(float, float);
387 float remainderf(float, float);
388 float remquof(float, float, int *);
390 float scalblnf(float, long);
391 float scalbnf(float, int);
394 float fdimf(float, float);
395 float fmaf(float, float, float);
396 float fmaxf(float, float) __pure2;
397 float fminf(float, float) __pure2;
401 * float versions of BSD math library entry points
404 float dremf(float, float);
405 int finitef(float) __pure2;
409 float jnf(int, float);
410 float scalbf(float, float);
413 float ynf(int, float);
416 * Float versions of reentrant version of gamma & lgamma; passes
417 * signgam back by reference as the second argument; user must
418 * allocate space for signgam.
420 float gammaf_r(float, int *);
421 float lgammaf_r(float, int *);
424 * float version of IEEE Test Vector
426 float significandf(float);
427 #endif /* __BSD_VISIBLE */
430 * long double versions of ISO/POSIX math functions
432 #if __ISO_C_VISIBLE >= 1999
433 long double acoshl(long double);
434 long double acosl(long double);
435 long double asinhl(long double);
436 long double asinl(long double);
437 long double atan2l(long double, long double);
438 long double atanhl(long double);
439 long double atanl(long double);
440 long double cbrtl(long double);
441 long double ceill(long double);
442 long double copysignl(long double, long double) __pure2;
443 long double coshl(long double);
444 long double cosl(long double);
445 long double erfcl(long double);
446 long double erfl(long double);
447 long double exp2l(long double);
448 long double expl(long double);
449 long double expm1l(long double);
450 long double fabsl(long double) __pure2;
451 long double fdiml(long double, long double);
452 long double floorl(long double);
453 long double fmal(long double, long double, long double);
454 long double fmaxl(long double, long double) __pure2;
455 long double fminl(long double, long double) __pure2;
456 long double fmodl(long double, long double);
457 long double frexpl(long double, int *); /* fundamentally !__pure2 */
458 long double hypotl(long double, long double);
459 int ilogbl(long double) __pure2;
460 long double ldexpl(long double, int);
461 long double lgammal(long double);
462 long long llrintl(long double);
463 long long llroundl(long double);
464 long double log10l(long double);
465 long double log1pl(long double);
466 long double log2l(long double);
467 long double logbl(long double);
468 long double logl(long double);
469 long lrintl(long double);
470 long lroundl(long double);
471 long double modfl(long double, long double *); /* fundamentally !__pure2 */
472 long double nanl(const char *) __pure2;
473 long double nearbyintl(long double);
474 long double nextafterl(long double, long double);
475 double nexttoward(double, long double);
476 float nexttowardf(float, long double);
477 long double nexttowardl(long double, long double);
478 long double powl(long double, long double);
479 long double remainderl(long double, long double);
480 long double remquol(long double, long double, int *);
481 long double rintl(long double);
482 long double roundl(long double);
483 long double scalblnl(long double, long);
484 long double scalbnl(long double, int);
485 long double sinhl(long double);
486 long double sinl(long double);
487 long double sqrtl(long double);
488 long double tanhl(long double);
489 long double tanl(long double);
490 long double tgammal(long double);
491 long double truncl(long double);
492 #endif /* __ISO_C_VISIBLE >= 1999 */
495 long double lgammal_r(long double, int *);
496 void sincos(double, double *, double *);
497 void sincosf(float, float *, float *);
498 void sincosl(long double, long double *, long double *);
499 double cospi(double);
501 long double cospil(long double);
502 double sinpi(double);
504 long double sinpil(long double);
505 double tanpi(double);
507 long double tanpil(long double);
512 #endif /* !_MATH_H_ */