[unix-history] / usr / src / usr.bin / pascal / libpc / ATAN.c

/* Copyright (c) 1982 Regents of the University of California */

static char sccsid[] = "@(#)ATAN.c 1.1 %G%";

#include <math.h>
extern int errno;

double
ATAN(value)
	double	value;
{
	double result;

	errno = 0;
	result = atan(value);
	if (errno != 0) {
		ERROR("Argument %e is out of the domain of atan\n", value);
		return;
	}
	return result;
}
Commit	Line	Data
3c8fe971 KM	1	/* Copyright (c) 1982 Regents of the University of California */
	2
	3	static char sccsid[] = "@(#)ATAN.c 1.1 %G%";
	4
	5	#include <math.h>
	6	extern int errno;
	7
	8	double
	9	ATAN(value)
	10	double value;
	11	{
	12	double result;
	13
	14	errno = 0;
	15	result = atan(value);
	16	if (errno != 0) {
	17	ERROR("Argument %e is out of the domain of atan\n", value);
	18	return;
	19	}
	20	return result;
	21	}