#ifndef _MATH_H
#define _MATH_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
+#define __inline inline
+#endif
+
+#define __NEED_float_t
+#define __NEED_double_t
#define __NEED___uint16_t
#define __NEED___uint32_t
#define __NEED___uint64_t
#include <bits/alltypes.h>
-#define M_E 2.7182818284590452354 /* e */
-#define M_LOG2E 1.4426950408889634074 /* log_2 e */
-#define M_LOG10E 0.43429448190325182765 /* log_10 e */
-#define M_LN2 0.69314718055994530942 /* log_e 2 */
-#define M_LN10 2.30258509299404568402 /* log_e 10 */
-#define M_PI 3.14159265358979323846 /* pi */
-#define M_PI_2 1.57079632679489661923 /* pi/2 */
-#define M_PI_4 0.78539816339744830962 /* pi/4 */
-#define M_1_PI 0.31830988618379067154 /* 1/pi */
-#define M_2_PI 0.63661977236758134308 /* 2/pi */
-#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
-#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
-#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
-
-#define __MAKE_FLOAT(i) (((union { int __i; float __f; }){ .__i = i }).__f)
-
-#define NAN __MAKE_FLOAT(0x7fc00000)
-#define INFINITY __MAKE_FLOAT(0x7f800000)
+#if 100*__GNUC__+__GNUC_MINOR__ >= 303
+#define NAN __builtin_nanf("")
+#define INFINITY __builtin_inff()
+#else
+#define NAN (0.0f/0.0f)
+#define INFINITY 1e40f
+#endif
#define HUGE_VALF INFINITY
#define HUGE_VAL ((double)INFINITY)
#define HUGE_VALL ((long double)INFINITY)
-#define MAXFLOAT __MAKE_FLOAT(0x7f7fffff)
-
#define MATH_ERRNO 1
-#define MATH_EXCEPT 2
+#define MATH_ERREXCEPT 2
#define math_errhandling 2
-#define FP_ILOGBNAN (((unsigned)-1)>>1)
-#define FP_ILOGB0 (~FP_ILOGBNAN)
+#define FP_ILOGBNAN (-1-(int)(((unsigned)-1)>>1))
+#define FP_ILOGB0 FP_ILOGBNAN
#define FP_NAN 0
#define FP_INFINITE 1
#define FP_SUBNORMAL 3
#define FP_NORMAL 4
-int __fpclassifyf(float);
int __fpclassify(double);
+int __fpclassifyf(float);
int __fpclassifyl(long double);
+union __float_repr { float __f; __uint32_t __i; };
+union __double_repr { double __f; __uint64_t __i; };
+
+#define __FLOAT_BITS(f) (((union __float_repr){ (float)(f) }).__i)
+#define __DOUBLE_BITS(f) (((union __double_repr){ (double)(f) }).__i)
+
#define fpclassify(x) ( \
sizeof(x) == sizeof(float) ? __fpclassifyf(x) : \
sizeof(x) == sizeof(double) ? __fpclassify(x) : \
__fpclassifyl(x) )
-#define isinf(x) (fpclassify(x) == FP_INFINITE)
-#define isnan(x) (fpclassify(x) == FP_NAN)
-#define isnormal(x) (fpclassify(x) == FP_NORMAL)
-#define isfinite(x) (fpclassify(x) > FP_INFINITE)
+#define isinf(x) ( \
+ sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) == 0x7f800000 : \
+ sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) == (__uint64_t)0x7ff<<52 : \
+ __fpclassifyl(x) == FP_INFINITE)
+
+#define isnan(x) ( \
+ sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) > 0x7f800000 : \
+ sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) > (__uint64_t)0x7ff<<52 : \
+ __fpclassifyl(x) == FP_NAN)
+
+#define isnormal(x) ( \
+ sizeof(x) == sizeof(float) ? ((__FLOAT_BITS(x)+0x00800000) & 0x7fffffff) >= 0x01000000 : \
+ sizeof(x) == sizeof(double) ? ((__DOUBLE_BITS(x)+((__uint64_t)1<<52)) & (__uint64_t)-1>>1) >= (__uint64_t)1<<53 : \
+ __fpclassifyl(x) == FP_NORMAL)
+
+#define isfinite(x) ( \
+ sizeof(x) == sizeof(float) ? (__FLOAT_BITS(x) & 0x7fffffff) < 0x7f800000 : \
+ sizeof(x) == sizeof(double) ? (__DOUBLE_BITS(x) & (__uint64_t)-1>>1) < (__uint64_t)0x7ff<<52 : \
+ __fpclassifyl(x) > FP_INFINITE)
+
+int __signbit(double);
+int __signbitf(float);
+int __signbitl(long double);
+
+#define signbit(x) ( \
+ sizeof(x) == sizeof(float) ? (int)(__FLOAT_BITS(x)>>31) : \
+ sizeof(x) == sizeof(double) ? (int)(__DOUBLE_BITS(x)>>63) : \
+ __signbitl(x) )
+
+#define isunordered(x,y) (isnan((x)) ? ((void)(y),1) : isnan((y)))
+
+static __inline int __isrel(long double __x, long double __y, int __rel)
+{
+ if (isunordered(__x, __y)) return 0;
+ if (__rel==-2) return __x < __y;
+ if (__rel==2) return __x > __y;
+ if (__rel==-1) return __x <= __y;
+ if (__rel==1) return __x >= __y;
+ return __x != __y;
+}
+
+#define isless(x,y) __isrel((x), (y), -2)
+#define islessequal(x,y) __isrel((x), (y), -1)
+#define islessgreater(x,y) __isrel((x), (y), 0)
+#define isgreaterequal(x,y) __isrel((x), (y), 1)
+#define isgreater(x,y) __isrel((x), (y), 2)
double acos(double);
float acosf(float);
long double fmodl(long double, long double);
double frexp(double, int *);
-float frexpf(float value, int *);
-long double frexpl(long double value, int *);
+float frexpf(float, int *);
+long double frexpl(long double, int *);
double hypot(double, double);
float hypotf(float, float);
float truncf(float);
long double truncl(long double);
-/* XSI stuff */
+
+#if defined(_XOPEN_SOURCE) || defined(_BSD_SOURCE)
+#define MAXFLOAT 3.40282347e+38F
+#endif
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define M_E 2.7182818284590452354 /* e */
+#define M_LOG2E 1.4426950408889634074 /* log_2 e */
+#define M_LOG10E 0.43429448190325182765 /* log_10 e */
+#define M_LN2 0.69314718055994530942 /* log_e 2 */
+#define M_LN10 2.30258509299404568402 /* log_e 10 */
+#define M_PI 3.14159265358979323846 /* pi */
+#define M_PI_2 1.57079632679489661923 /* pi/2 */
+#define M_PI_4 0.78539816339744830962 /* pi/4 */
+#define M_1_PI 0.31830988618379067154 /* 1/pi */
+#define M_2_PI 0.63661977236758134308 /* 2/pi */
+#define M_2_SQRTPI 1.12837916709551257390 /* 2/sqrt(pi) */
+#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */
+#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */
+
+extern int signgam;
+
double j0(double);
double j1(double);
double jn(int, double);
-double scalb(double, double);
+
double y0(double);
double y1(double);
double yn(int, double);
+#endif
-extern int signgam;
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define HUGE 3.40282347e+38F
+
+double scalb(double, double);
+float scalbf(float, float);
+
+double significand(double);
+float significandf(float);
+
+double lgamma_r(double, int*);
+float lgammaf_r(float, int*);
+
+float j0f(float);
+float j1f(float);
+float jnf(int, float);
+
+float y0f(float);
+float y1f(float);
+float ynf(int, float);
+#endif
+
+#ifdef _GNU_SOURCE
+long double lgammal_r(long double, int*);
+
+long double j0l(long double);
+long double j1l(long double);
+long double jnl(int, long double);
+
+long double y0l(long double);
+long double y1l(long double);
+long double ynl(int, long double);
+
+void sincos(double, double*, double*);
+void sincosf(float, float*, float*);
+void sincosl(long double, long double*, long double*);
+
+double exp10(double);
+float exp10f(float);
+long double exp10l(long double);
+
+double pow10(double);
+float pow10f(float);
+long double pow10l(long double);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
#endif
projects / musl / blobdiff