mirror of
git://git.musl-libc.org/musl
synced 2024-12-17 20:24:54 +00:00
2ba3f44db5
some programs (procps, babl) expect it, and it doesn't seem to cause any harm to just add it. it's small and straightforward. since math.h also defines MAXFLOAT, we undef it in both places, before defining it.
421 lines
11 KiB
C
421 lines
11 KiB
C
#ifndef _MATH_H
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#define _MATH_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <features.h>
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#define __NEED_float_t
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#define __NEED_double_t
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#define __NEED___uint16_t
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#define __NEED___uint32_t
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#define __NEED___uint64_t
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#include <bits/alltypes.h>
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#if 100*__GNUC__+__GNUC_MINOR__ >= 303
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#define NAN __builtin_nanf("")
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#define INFINITY __builtin_inff()
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#else
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#define NAN (0.0f/0.0f)
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#define INFINITY 1e40f
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#endif
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#define HUGE_VALF INFINITY
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#define HUGE_VAL ((double)INFINITY)
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#define HUGE_VALL ((long double)INFINITY)
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define math_errhandling 2
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#define FP_ILOGBNAN (-1-(int)(((unsigned)-1)>>1))
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#define FP_ILOGB0 FP_ILOGBNAN
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#define FP_NAN 0
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#define FP_INFINITE 1
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#define FP_ZERO 2
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#define FP_SUBNORMAL 3
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#define FP_NORMAL 4
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int __fpclassify(double);
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int __fpclassifyf(float);
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int __fpclassifyl(long double);
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union __float_repr { float __f; __uint32_t __i; };
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union __double_repr { double __f; __uint64_t __i; };
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#define __FLOAT_BITS(f) (((union __float_repr){ (float)(f) }).__i)
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#define __DOUBLE_BITS(f) (((union __double_repr){ (double)(f) }).__i)
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#define fpclassify(x) ( \
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sizeof(x) == sizeof(float) ? __fpclassifyf(x) : \
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sizeof(x) == sizeof(double) ? __fpclassify(x) : \
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__fpclassifyl(x) )
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#define isinf(x) ( \
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sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) == 0x7f800000 : \
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sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) == (__uint64_t)0x7ff<<52 : \
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__fpclassifyl(x) == FP_INFINITE)
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#define isnan(x) ( \
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sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) > 0x7f800000 : \
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sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) > (__uint64_t)0x7ff<<52 : \
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__fpclassifyl(x) == FP_NAN)
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#define isnormal(x) ( \
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sizeof(x) == sizeof(float) ? ((__FLOAT_BITS(x)+0x00800000) & 0x7fffffff) >= 0x01000000 : \
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sizeof(x) == sizeof(double) ? ((__DOUBLE_BITS(x)+((__uint64_t)1<<52)) & (__uint64_t)-1>>1) >= (__uint64_t)1<<53 : \
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__fpclassifyl(x) == FP_NORMAL)
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#define isfinite(x) ( \
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sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) < 0x7f800000 : \
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sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) < (__uint64_t)0x7ff<<52 : \
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__fpclassifyl(x) > FP_INFINITE)
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int __signbit(double);
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int __signbitf(float);
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int __signbitl(long double);
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#define signbit(x) ( \
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sizeof(x) == sizeof(float) ? (int)(__FLOAT_BITS(x)>>31) : \
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sizeof(x) == sizeof(double) ? (int)(__DOUBLE_BITS(x)>>63) : \
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__signbitl(x) )
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#define isunordered(x,y) (isnan((x)) ? ((void)(y),1) : isnan((y)))
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#define __ISREL_DEF(rel, op, type) \
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static __inline int __is##rel(type __x, type __y) \
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{ return !isunordered(__x,__y) && __x op __y; }
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__ISREL_DEF(lessf, <, float)
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__ISREL_DEF(less, <, double)
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__ISREL_DEF(lessl, <, long double)
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__ISREL_DEF(lessequalf, <=, float)
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__ISREL_DEF(lessequal, <=, double)
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__ISREL_DEF(lessequall, <=, long double)
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__ISREL_DEF(lessgreaterf, !=, float)
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__ISREL_DEF(lessgreater, !=, double)
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__ISREL_DEF(lessgreaterl, !=, long double)
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__ISREL_DEF(greaterf, >, float)
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__ISREL_DEF(greater, >, double)
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__ISREL_DEF(greaterl, >, long double)
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__ISREL_DEF(greaterequalf, >=, float)
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__ISREL_DEF(greaterequal, >=, double)
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__ISREL_DEF(greaterequall, >=, long double)
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#define __tg_pred_2(x, y, p) ( \
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sizeof((x)+(y)) == sizeof(float) ? p##f(x, y) : \
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sizeof((x)+(y)) == sizeof(double) ? p(x, y) : \
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p##l(x, y) )
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#define isless(x, y) __tg_pred_2(x, y, __isless)
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#define islessequal(x, y) __tg_pred_2(x, y, __islessequal)
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#define islessgreater(x, y) __tg_pred_2(x, y, __islessgreater)
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#define isgreater(x, y) __tg_pred_2(x, y, __isgreater)
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#define isgreaterequal(x, y) __tg_pred_2(x, y, __isgreaterequal)
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double acos(double);
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float acosf(float);
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long double acosl(long double);
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double acosh(double);
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float acoshf(float);
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long double acoshl(long double);
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double asin(double);
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float asinf(float);
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long double asinl(long double);
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double asinh(double);
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float asinhf(float);
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long double asinhl(long double);
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double atan(double);
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float atanf(float);
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long double atanl(long double);
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double atan2(double, double);
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float atan2f(float, float);
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long double atan2l(long double, long double);
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double atanh(double);
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float atanhf(float);
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long double atanhl(long double);
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double cbrt(double);
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float cbrtf(float);
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long double cbrtl(long double);
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double ceil(double);
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float ceilf(float);
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long double ceill(long double);
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double copysign(double, double);
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float copysignf(float, float);
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long double copysignl(long double, long double);
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double cos(double);
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float cosf(float);
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long double cosl(long double);
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double cosh(double);
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float coshf(float);
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long double coshl(long double);
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double erf(double);
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float erff(float);
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long double erfl(long double);
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double erfc(double);
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float erfcf(float);
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long double erfcl(long double);
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double exp(double);
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float expf(float);
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long double expl(long double);
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double exp2(double);
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float exp2f(float);
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long double exp2l(long double);
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double expm1(double);
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float expm1f(float);
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long double expm1l(long double);
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double fabs(double);
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float fabsf(float);
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long double fabsl(long double);
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double fdim(double, double);
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float fdimf(float, float);
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long double fdiml(long double, long double);
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double floor(double);
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float floorf(float);
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long double floorl(long double);
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double fma(double, double, double);
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float fmaf(float, float, float);
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long double fmal(long double, long double, long double);
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double fmax(double, double);
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float fmaxf(float, float);
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long double fmaxl(long double, long double);
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double fmin(double, double);
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float fminf(float, float);
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long double fminl(long double, long double);
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double fmod(double, double);
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float fmodf(float, float);
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long double fmodl(long double, long double);
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double frexp(double, int *);
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float frexpf(float, int *);
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long double frexpl(long double, int *);
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double hypot(double, double);
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float hypotf(float, float);
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long double hypotl(long double, long double);
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int ilogb(double);
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int ilogbf(float);
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int ilogbl(long double);
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double ldexp(double, int);
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float ldexpf(float, int);
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long double ldexpl(long double, int);
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double lgamma(double);
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float lgammaf(float);
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long double lgammal(long double);
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long long llrint(double);
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long long llrintf(float);
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long long llrintl(long double);
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long long llround(double);
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long long llroundf(float);
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long long llroundl(long double);
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double log(double);
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float logf(float);
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long double logl(long double);
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double log10(double);
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float log10f(float);
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long double log10l(long double);
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double log1p(double);
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float log1pf(float);
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long double log1pl(long double);
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double log2(double);
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float log2f(float);
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long double log2l(long double);
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double logb(double);
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float logbf(float);
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long double logbl(long double);
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long lrint(double);
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long lrintf(float);
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long lrintl(long double);
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long lround(double);
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long lroundf(float);
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long lroundl(long double);
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double modf(double, double *);
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float modff(float, float *);
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long double modfl(long double, long double *);
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double nan(const char *);
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float nanf(const char *);
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long double nanl(const char *);
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double nearbyint(double);
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float nearbyintf(float);
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long double nearbyintl(long double);
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double nextafter(double, double);
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float nextafterf(float, float);
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long double nextafterl(long double, long double);
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double nexttoward(double, long double);
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float nexttowardf(float, long double);
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long double nexttowardl(long double, long double);
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double pow(double, double);
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float powf(float, float);
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long double powl(long double, long double);
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double remainder(double, double);
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float remainderf(float, float);
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long double remainderl(long double, long double);
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double remquo(double, double, int *);
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float remquof(float, float, int *);
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long double remquol(long double, long double, int *);
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double rint(double);
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float rintf(float);
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long double rintl(long double);
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double round(double);
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float roundf(float);
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long double roundl(long double);
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double scalbln(double, long);
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float scalblnf(float, long);
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long double scalblnl(long double, long);
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double scalbn(double, int);
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float scalbnf(float, int);
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long double scalbnl(long double, int);
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double sin(double);
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float sinf(float);
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long double sinl(long double);
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double sinh(double);
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float sinhf(float);
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long double sinhl(long double);
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double sqrt(double);
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float sqrtf(float);
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long double sqrtl(long double);
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double tan(double);
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float tanf(float);
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long double tanl(long double);
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double tanh(double);
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float tanhf(float);
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long double tanhl(long double);
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double tgamma(double);
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float tgammaf(float);
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long double tgammal(long double);
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double trunc(double);
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float truncf(float);
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long double truncl(long double);
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#if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE)
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#undef MAXFLOAT
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#define MAXFLOAT 3.40282347e+38F
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#endif
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#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define M_E 2.7182818284590452354 /* e */
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#define M_LOG2E 1.4426950408889634074 /* log_2 e */
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#define M_LOG10E 0.43429448190325182765 /* log_10 e */
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#define M_LN2 0.69314718055994530942 /* log_e 2 */
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#define M_LN10 2.30258509299404568402 /* log_e 10 */
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#define M_PI 3.14159265358979323846 /* pi */
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#define M_PI_2 1.57079632679489661923 /* pi/2 */
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#define M_PI_4 0.78539816339744830962 /* pi/4 */
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#define M_1_PI 0.31830988618379067154 /* 1/pi */
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#define M_2_PI 0.63661977236758134308 /* 2/pi */
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#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
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#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
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#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
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extern int signgam;
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double j0(double);
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double j1(double);
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double jn(int, double);
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double y0(double);
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double y1(double);
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double yn(int, double);
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define HUGE 3.40282347e+38F
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double scalb(double, double);
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float scalbf(float, float);
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double significand(double);
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float significandf(float);
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double lgamma_r(double, int*);
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float lgammaf_r(float, int*);
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float j0f(float);
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float j1f(float);
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float jnf(int, float);
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float y0f(float);
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float y1f(float);
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float ynf(int, float);
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#endif
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#ifdef _GNU_SOURCE
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long double lgammal_r(long double, int*);
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void sincos(double, double*, double*);
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void sincosf(float, float*, float*);
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void sincosl(long double, long double*, long double*);
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double exp10(double);
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float exp10f(float);
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long double exp10l(long double);
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double pow10(double);
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float pow10f(float);
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long double pow10l(long double);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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