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- /* math.h -- Definitions for the math floating point package. */
-
- #ifndef _MATH_H_INCLUDED
- #define _MATH_H_INCLUDED
- #ifndef HUGE_VAL
-
- #define HUGE_VAL (*HUGE_dll)
- extern double *HUGE_dll;
-
- #endif /* ! defined (HUGE_VAL) */
- struct _complex {
- double x,y;
- };
- #define complex _complex
-
- /* Reentrant ANSI C functions. */
-
- extern double atan(double);
- extern double cos(double);
- extern double sin(double);
- extern double tan(double);
- extern double tanh(double);
- extern double frexp(double, int *);
- extern double modf(double, double *);
- extern double ceil(double);
- extern double fabs(double);
- extern double floor(double);
-
- extern double acos (double);
- extern double asin (double);
- extern double atan2 (double, double);
- extern double cosh (double);
- extern double sinh (double);
- extern double exp(double);
- extern double ldexp(double, int);
- extern double log(double);
- extern double log10(double);
- extern double pow(double, double);
- extern double sqrt(double);
- extern double fmod(double, double);
-
-
- /* Non ANSI double precision functions. */
-
- extern double infinity(void);
- extern int isnan (double);
- extern int finite (double);
- extern double copysign(double, double);
-
- extern double asinh (double);
- extern double nextafter (double, double);
-
- extern double acosh (double);
- extern double atanh(double);
- extern double lgamma (double);
- extern double y0 (double);
- extern double y1 (double);
- extern double yn(int, double);
- extern double j0(double);
- extern double j1 (double);
- extern double jn (int, double);
- #define log2(x) (log (x) / M_LOG2_E)
-
- extern double hypot (double, double);
- #define _hypot hypot
-
- extern double cabs(struct complex);
-
-
- /* The exception structure passed to the matherr routine. */
-
- struct exception
- {
- int type;
- char *name;
- double arg1;
- double arg2;
- double retval;
- int err;
- };
-
- extern int matherr (struct exception *e);
-
- /* 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) */
-
- #endif /* _MATH_H_ */
-