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Diffstat (limited to 'newlib/libc/include/math.h')
| -rw-r--r-- | newlib/libc/include/math.h | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/newlib/libc/include/math.h b/newlib/libc/include/math.h new file mode 100644 index 00000000000..d3f2e99ae4d --- /dev/null +++ b/newlib/libc/include/math.h @@ -0,0 +1,273 @@ +/* math.h -- Definitions for the math floating point package. */ + +#ifndef _MATH_H_ +#ifdef __cplusplus +extern "C" { +#endif +#define _MATH_H_ + +#include <sys/reent.h> +#include <machine/ieeefp.h> +#include "_ansi.h" + +#ifndef HUGE_VAL + +/* Define HUGE_VAL as infinity, unless HUGE_VAL is already defined + (which might have been done by something like math-68881.h). */ + +union __dmath +{ + __uint32_t i[2]; + double d; +}; + +extern const union __dmath __infinity; + +#define HUGE_VAL (__infinity.d) + +#endif /* ! defined (HUGE_VAL) */ + +/* Reentrant ANSI C functions. */ + +#ifndef __math_68881 +extern double atan _PARAMS((double)); +extern double cos _PARAMS((double)); +extern double sin _PARAMS((double)); +extern double tan _PARAMS((double)); +extern double tanh _PARAMS((double)); +extern double frexp _PARAMS((double, int *)); +extern double modf _PARAMS((double, double *)); +extern double ceil _PARAMS((double)); +extern double fabs _PARAMS((double)); +extern double floor _PARAMS((double)); +#endif /* ! defined (__math_68881) */ + +/* Non reentrant ANSI C functions. */ + +#ifndef _REENT_ONLY +#ifndef __math_6881 +extern double acos _PARAMS((double)); +extern double asin _PARAMS((double)); +extern double atan2 _PARAMS((double, double)); +extern double cosh _PARAMS((double)); +extern double sinh _PARAMS((double)); +extern double exp _PARAMS((double)); +extern double ldexp _PARAMS((double, int)); +extern double log _PARAMS((double)); +extern double log10 _PARAMS((double)); +extern double pow _PARAMS((double, double)); +extern double sqrt _PARAMS((double)); +extern double fmod _PARAMS((double, double)); +#endif /* ! defined (__math_68881) */ +#endif /* ! defined (_REENT_ONLY) */ + +#ifndef __STRICT_ANSI__ + +/* Non ANSI double precision functions. */ + +extern double infinity _PARAMS((void)); +extern double nan _PARAMS((void)); +extern int isnan _PARAMS((double)); +extern int isinf _PARAMS((double)); +extern int finite _PARAMS((double)); +extern double copysign _PARAMS((double, double)); +extern int ilogb _PARAMS((double)); + +extern double asinh _PARAMS((double)); +extern double cbrt _PARAMS((double)); +extern double nextafter _PARAMS((double, double)); +extern double rint _PARAMS((double)); +extern double scalbn _PARAMS((double, int)); + +#ifndef __math_68881 +extern double log1p _PARAMS((double)); +extern double expm1 _PARAMS((double)); +#endif /* ! defined (__math_68881) */ + +#ifndef _REENT_ONLY +extern double acosh _PARAMS((double)); +extern double atanh _PARAMS((double)); +extern double remainder _PARAMS((double, double)); +extern double gamma _PARAMS((double)); +extern double gamma_r _PARAMS((double, int *)); +extern double lgamma _PARAMS((double)); +extern double lgamma_r _PARAMS((double, int *)); +extern double erf _PARAMS((double)); +extern double erfc _PARAMS((double)); +extern double y0 _PARAMS((double)); +extern double y1 _PARAMS((double)); +extern double yn _PARAMS((int, double)); +extern double j0 _PARAMS((double)); +extern double j1 _PARAMS((double)); +extern double jn _PARAMS((int, double)); +#define log2(x) (log (x) / M_LOG2_E) + +#ifndef __math_68881 +extern double hypot _PARAMS((double, double)); +#endif + +extern double cabs(); +extern double drem _PARAMS((double, double)); + +#endif /* ! defined (_REENT_ONLY) */ + +/* Single precision versions of ANSI functions. */ + +extern float atanf _PARAMS((float)); +extern float cosf _PARAMS((float)); +extern float sinf _PARAMS((float)); +extern float tanf _PARAMS((float)); +extern float tanhf _PARAMS((float)); +extern float frexpf _PARAMS((float, int *)); +extern float modff _PARAMS((float, float *)); +extern float ceilf _PARAMS((float)); +extern float fabsf _PARAMS((float)); +extern float floorf _PARAMS((float)); + +#ifndef _REENT_ONLY +extern float acosf _PARAMS((float)); +extern float asinf _PARAMS((float)); +extern float atan2f _PARAMS((float, float)); +extern float coshf _PARAMS((float)); +extern float sinhf _PARAMS((float)); +extern float expf _PARAMS((float)); +extern float ldexpf _PARAMS((float, int)); +extern float logf _PARAMS((float)); +extern float log10f _PARAMS((float)); +extern float powf _PARAMS((float, float)); +extern float sqrtf _PARAMS((float)); +extern float fmodf _PARAMS((float, float)); +#endif /* ! defined (_REENT_ONLY) */ + +/* Other single precision functions. */ + +extern float infinityf _PARAMS((void)); +extern float nanf _PARAMS((void)); +extern int isnanf _PARAMS((float)); +extern int isinff _PARAMS((float)); +extern int finitef _PARAMS((float)); +extern float copysignf _PARAMS((float, float)); +extern int ilogbf _PARAMS((float)); + +extern float asinhf _PARAMS((float)); +extern float cbrtf _PARAMS((float)); +extern float nextafterf _PARAMS((float, float)); +extern float rintf _PARAMS((float)); +extern float scalbnf _PARAMS((float, int)); +extern float log1pf _PARAMS((float)); +extern float expm1f _PARAMS((float)); + +#ifndef _REENT_ONLY +extern float acoshf _PARAMS((float)); +extern float atanhf _PARAMS((float)); +extern float remainderf _PARAMS((float, float)); +extern float gammaf _PARAMS((float)); +extern float gammaf_r _PARAMS((float, int *)); +extern float lgammaf _PARAMS((float)); +extern float lgammaf_r _PARAMS((float, int *)); +extern float erff _PARAMS((float)); +extern float erfcf _PARAMS((float)); +extern float y0f _PARAMS((float)); +extern float y1f _PARAMS((float)); +extern float ynf _PARAMS((int, float)); +extern float j0f _PARAMS((float)); +extern float j1f _PARAMS((float)); +extern float jnf _PARAMS((int, float)); +#define log2f(x) (logf (x) / (float) M_LOG2_E) +extern float hypotf _PARAMS((float, float)); + +extern float cabsf(); +extern float dremf _PARAMS((float, float)); + +#endif /* ! defined (_REENT_ONLY) */ + +/* The gamma functions use a global variable, signgam. */ + +extern int signgam; + +/* The exception structure passed to the matherr routine. */ + +#ifdef __cplusplus +struct __exception +#else +struct exception +#endif +{ + int type; + char *name; + double arg1; + double arg2; + double retval; + int err; +}; + +#ifdef __cplusplus +extern int matherr _PARAMS((struct __exception *e)); +#else +extern int matherr _PARAMS((struct exception *e)); +#endif + +/* Values for the type field of struct exception. */ + +#define DOMAIN 1 +#define SING 2 +#define OVERFLOW 3 +#define UNDERFLOW 4 +#define TLOSS 5 +#define PLOSS 6 + +/* Useful constants. */ + +#define M_E 2.7182818284590452354 +#define M_LOG2E 1.4426950408889634074 +#define M_LOG10E 0.43429448190325182765 +#define M_LN2 0.69314718055994530942 +#define M_LN10 2.30258509299404568402 +#define M_PI 3.14159265358979323846 +#define M_TWOPI (M_PI * 2.0) +#define M_PI_2 1.57079632679489661923 +#define M_PI_4 0.78539816339744830962 +#define M_3PI_4 2.3561944901923448370E0 +#define M_SQRTPI 1.77245385090551602792981 +#define M_1_PI 0.31830988618379067154 +#define M_2_PI 0.63661977236758134308 +#define M_2_SQRTPI 1.12837916709551257390 +#define M_SQRT2 1.41421356237309504880 +#define M_SQRT1_2 0.70710678118654752440 +#define M_LN2LO 1.9082149292705877000E-10 +#define M_LN2HI 6.9314718036912381649E-1 +#define M_SQRT3 1.73205080756887719000 +#define M_IVLN10 0.43429448190325182765 /* 1 / log(10) */ +#define M_LOG2_E 0.693147180559945309417 +#define M_INVLN2 1.4426950408889633870E0 /* 1 / log(2) */ + +/* Global control over fdlibm error handling. */ + +enum __fdlibm_version +{ + __fdlibm_ieee = -1, + __fdlibm_svid, + __fdlibm_xopen, + __fdlibm_posix +}; + +#define _LIB_VERSION_TYPE enum __fdlibm_version +#define _LIB_VERSION __fdlib_version + +extern _CONST _LIB_VERSION_TYPE _LIB_VERSION; + +#define _IEEE_ __fdlibm_ieee +#define _SVID_ __fdlibm_svid +#define _XOPEN_ __fdlibm_xopen +#define _POSIX_ __fdlibm_posix + +#endif /* ! defined (__STRICT_ANSI__) */ + +#ifdef __FAST_MATH__ +#include <machine/fastmath.h> +#endif + +#ifdef __cplusplus +} +#endif +#endif /* _MATH_H_ */ |