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

/*-
 * Copyright (c) 1982 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)ATAN.c	1.3 (Berkeley) %G%";
#endif /* not lint */

#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 result;
}
Commit	Line	Data
0d78ca85 KB	1	/*-
	2	* Copyright (c) 1982 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*/
3c8fe971	7
0d78ca85 KB	8	#ifndef lint
	9	static char sccsid[] = "@(#)ATAN.c 1.3 (Berkeley) %G%";
	10	#endif /* not lint */
3c8fe971 KM	11
	12	#include <math.h>
	13	extern int errno;
	14
	15	double
	16	ATAN(value)
	17	double value;
	18	{
	19	double result;
	20
	21	errno = 0;
	22	result = atan(value);
	23	if (errno != 0) {
	24	ERROR("Argument %e is out of the domain of atan\n", value);
3c8fe971 KM	25	}
	26	return result;
	27	}