160 lines
5.2 KiB
C
160 lines
5.2 KiB
C
/* Release 3.00 */
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/*-------------------------------------------------------------------------*
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* *
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* math.h - floating point definitions and prototypes. *
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* *
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* COPYRIGHT (C) 1989, 1990 Jensen and Partners. All Rights Reserved. *
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* *
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*--------------------------------------------------------------------------*/
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#include <stdepoc.h>
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#ifndef _MATH_INC_
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#define _MATH_INC_
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#ifndef _ERRNOM_INC_
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#define _ERRNOM_INC_
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extern int _doserrno; /* global DOS error variable */
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extern int errno; /* global error variable */
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#endif
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#define EDOM (-2) /* Math argument */
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#define ERANGE (-7) /* Result too large */
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#define DOMAIN 1 /* parameter not in valid domain */
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#define SING 2 /* function is incalculable at this place */
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#define OVERFLOW 3 /* result exceeds representable range */
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#define UNDERFLOW 4 /* result too close to zero to be represented */
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#define TLOSS 5 /* total loss of precision (eg. Sine (2**65)) */
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#define PLOSS 6 /* partial precision loss */
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#define HUGE_VAL HUGE
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#define LHUGE_VAL LHUGE
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extern double HUGE;
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extern double LHUGE;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int abs(int _x);
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extern double acos(double _x);
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extern double asin(double _x);
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extern double atan(double _x);
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extern double atan2(double _y, double _x);
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extern double atof(const char *_s);
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extern double ceil(double _x);
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extern double cos(double _x);
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extern double cosh(double _x);
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extern double exp(double _x);
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extern double fabs(double _x);
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extern double floor(double _x);
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extern double fmod(double _x, double _y);
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extern double frexp(double _x, int *_exp);
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extern long labs(long _x);
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extern double ldexp(double _x, int _exp);
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extern double log(double _x);
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extern double log10(double _x);
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extern double modf(double _x, double *_ipart);
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extern double poly(double _x, int _degree, double _coeffs[]);
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extern double pow(double _x, double _y);
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extern double sin(double _x);
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extern double sinh(double _x);
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extern double sqrt(double _x);
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extern double strtod(const char *_s, char **_eptr);
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extern double tan(double _x);
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extern double tanh(double _x);
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extern long double acosl(long double _x);
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extern long double asinl(long double _x);
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extern long double atanl(long double _x);
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extern long double atan2l(long double _y, long double _x);
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extern long double atofl(const char *_s);
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extern long double ceill(long double _x);
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extern long double cosl(long double _x);
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extern long double coshl(long double _x);
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extern long double expl(long double _x);
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extern long double fabsl(long double _x);
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extern long double floorl(long double _x);
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extern long double fmodl(long double _x, long double _y);
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extern long double frexpl(long double _x, int *_exp);
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extern long double ldexpl(long double _x, int _exp);
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extern long double logl(long double _x);
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extern long double log10l(long double _x);
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extern long double modfl(long double _x, long double *_ipart);
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extern long double polyl(long double _x, int _degree, long double _coeffs[]);
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extern long double powl(long double _x, long double _y);
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extern long double sinl(long double _x);
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extern long double sinhl(long double _x);
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extern long double sqrtl(long double _x);
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extern long double strtodl(const char *_s, char **_eptr);
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extern long double tanl(long double _x);
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extern long double tanhl(long double _x);
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#ifdef __cplusplus
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}
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#endif
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struct exception {
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int type;
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char *name;
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double arg1,
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arg2,
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retval;
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};
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extern int (* matherr)(struct exception *_x);
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern double hypot(double _x, double _y);
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extern long double hypotl(long double _x, long double _y);
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extern double pow10(int _p);
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extern void _fpreset(void);
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#ifdef __cplusplus
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}
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#endif
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#ifdef __cplusplus
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struct _complex { /* as used by cabs function */
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double x,
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y;
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};
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struct _complexl { /* as used by cabsl function */
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long double x,
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y;
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};
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#else
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struct complex { /* as used by cabs function */
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double x,
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y;
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};
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struct complexl { /* as used by cabsl function */
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long double x,
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y;
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};
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#endif
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#define cabs(z) (hypot ((z).x, (z).y))
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#define cabsl(z) (hypotl((z).x, (z).y))
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/* Constants rounded for 18 decimals. */
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#define MA_E 2.71828182845904524
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#define MA_LOG2E 1.44269504088896341
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#define MA_LOG10E 0.434294481903251828
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#define MA_LN2 0.693147180559945309
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#define MA_LN10 2.30258509299404568
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#define MA_PI 3.14159265358979324
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#define MA_PI_2 1.57079632679489662
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#define MA_PI_4 0.785398163397448310
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#define MA_1_PI 0.318309886183790672
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#define MA_2_PI 0.636619772367581343
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#define MA_1_SQRTPI 0.564189583547756287
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#define MA_2_SQRTPI 1.12837916709551257
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#define MA_SQRT2 1.41421356237309505
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#define MA_SQRT_2 0.707106781186547524
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#endif
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