/* math.h -- Definitions for the math floating point package. */ #ifndef _MATH_H_ #ifdef __cplusplus extern "C" { #endif #define _MATH_H_ #include #include #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 #endif #ifdef __cplusplus } #endif #endif /* _MATH_H_ */