pdp11v/usr/src/head/math.h

/*	@(#)math.h	2.1	*/
/*	@(#)math.h	1.6	*/
extern int errno, signgam;

extern double atof(), frexp(), ldexp(), modf();
extern double j0(), j1(), jn(), y0(), y1(), yn();
extern double erf(), erfc();
extern double exp(), log(), log10(), pow(), sqrt();
extern double floor(), ceil(), fmod(), fabs();
extern double gamma();
extern double hypot();
extern int matherr();
extern double sinh(), cosh(), tanh();
extern double sin(), cos(), tan(), asin(), acos(), atan(), atan2();

#include <values.h>
#define HUGE	MAXFLOAT

#define _ABS(x)	((x) < 0 ? -(x) : (x))
#define _REDUCE(TYPE, X, XN, C1, C2)	{ \
	double x1 = (double)(TYPE)X, x2 = X - x1; \
	X = x1 - (XN) * (C1); X += x2; X -= (XN) * (C2); }
#define _POLY1(x, c)	((c)[0] * (x) + (c)[1])
#define _POLY2(x, c)	(_POLY1((x), (c)) * (x) + (c)[2])
#define _POLY3(x, c)	(_POLY2((x), (c)) * (x) + (c)[3])
#define _POLY4(x, c)	(_POLY3((x), (c)) * (x) + (c)[4])
#define _POLY5(x, c)	(_POLY4((x), (c)) * (x) + (c)[5])
#define _POLY6(x, c)	(_POLY5((x), (c)) * (x) + (c)[6])
#define _POLY7(x, c)	(_POLY6((x), (c)) * (x) + (c)[7])
#define _POLY8(x, c)	(_POLY7((x), (c)) * (x) + (c)[8])
#define _POLY9(x, c)	(_POLY8((x), (c)) * (x) + (c)[9])

struct exception {
	int type;
	char *name;
	double arg1;
	double arg2;
	double retval;
	};

#define 	DOMAIN		01
#define		SING		02
#define		OVERFLOW	03
#define		UNDERFLOW	04
#define		TLOSS		05
#define		PLOSS		06