xref: /netbsd-src/sys/arch/hppa/spmath/setovfl.c (revision d72340ff8e2fb5c3ca49ab85c798389cda4408d6)

/*	$NetBSD: setovfl.c,v 1.7 2012/02/04 17:03:10 skrll Exp $	*/

/*	$OpenBSD: setovfl.c,v 1.4 2001/03/29 03:58:19 mickey Exp $	*/

/*
 * Copyright 1996 1995 by Open Software Foundation, Inc.
 *              All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appears in all copies and
 * that both the copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 */
/*
 * pmk1.1
 */
/*
 * (c) Copyright 1986 HEWLETT-PACKARD COMPANY
 *
 * To anyone who acknowledges that this file is provided "AS IS"
 * without any express or implied warranty:
 *     permission to use, copy, modify, and distribute this file
 * for any purpose is hereby granted without fee, provided that
 * the above copyright notice and this notice appears in all
 * copies, and that the name of Hewlett-Packard Company not be
 * used in advertising or publicity pertaining to distribution
 * of the software without specific, written prior permission.
 * Hewlett-Packard Company makes no representations about the
 * suitability of this software for any purpose.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: setovfl.c,v 1.7 2012/02/04 17:03:10 skrll Exp $");

#include "../spmath/float.h"
#include "../spmath/sgl_float.h"
#include "../spmath/dbl_float.h"

sgl_floating_point
sgl_setoverflow(unsigned int sign)
{
	sgl_floating_point result;

	/* set result to infinity or largest number */
#if 0
	switch (Rounding_mode()) {
		case ROUNDPLUS:
			if (sign) {
				Sgl_setlargestnegative(result);
			} else {
				Sgl_setinfinitypositive(result);
			}
			break;
		case ROUNDMINUS:
			if (sign==0) {
				Sgl_setlargestpositive(result);
			} else {
				Sgl_setinfinitynegative(result);
			}
			break;
		case ROUNDNEAREST:
			Sgl_setinfinity(result,sign);
			break;
		default:
		case ROUNDZERO:
			Sgl_setlargest(result,sign);
			break;
	}
#endif
	Sgl_setinfinity(result,sign);
	return(result);
}

dbl_floating_point dbl_setoverflow(unsigned int sign)
{
	dbl_floating_point result;

	/* set result to infinity or largest number */
	/* ignore for now
	switch (Rounding_mode()) {
		case ROUNDPLUS:
			if (sign) {
				Dbl_setlargestnegative(result);
			}
			else {
				Dbl_setinfinitypositive(result);
			}
			break;
		case ROUNDMINUS:
			if (sign==0) {
				Dbl_setlargestpositive(result);
			}
			else {
				Dbl_setinfinitynegative(result);
			}
			break;
		case ROUNDNEAREST:
			Dbl_setinfinity(result,sign);
			break;
		case ROUNDZERO:
			Dbl_setlargest(result,sign);
	}
	*/
	Dbl_setinfinity(result.wd0,result.wd1,sign);
	return(result);
}