fpsetmask.c revision 2
98N/A/*
98N/A * CDDL HEADER START
98N/A *
98N/A * The contents of this file are subject to the terms of the
98N/A * Common Development and Distribution License (the "License").
98N/A * You may not use this file except in compliance with the License.
98N/A *
98N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
98N/A * or http://www.opensolaris.org/os/licensing.
98N/A * See the License for the specific language governing permissions
98N/A * and limitations under the License.
98N/A *
98N/A * When distributing Covered Code, include this CDDL HEADER in each
98N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
98N/A * If applicable, add the following below this CDDL HEADER, with the
98N/A * fields enclosed by brackets "[]" replaced with your own identifying
98N/A * information: Portions Copyright [yyyy] [name of copyright owner]
98N/A *
98N/A * CDDL HEADER END
98N/A */
98N/A
98N/A/*
98N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
98N/A * Use is subject to license terms.
98N/A */
98N/A
98N/A/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
98N/A/* Copyright (c) 1988 AT&T */
98N/A/* All Rights Reserved */
98N/A
156N/A#pragma ident "%Z%%M% %I% %E% SMI"
98N/A
98N/A#pragma weak _fpsetmask = fpsetmask
98N/A
98N/Aextern void _getmxcsr(int *), _putmxcsr(int);
98N/A
98N/A#include "lint.h"
98N/A#include <ieeefp.h>
98N/A#include "fp.h"
98N/A
98N/Afp_except
98N/Afpsetmask(fp_except newmask)
98N/A{
156N/A struct _cw87 cw;
156N/A fp_except oldmask;
98N/A int mxcsr;
98N/A
98N/A _getcw(&cw);
98N/A oldmask = (fp_except)(~cw.mask & EXCPMASK);
98N/A cw.mask = ~((unsigned)newmask) & EXCPMASK;
98N/A _putcw(cw);
98N/A _getmxcsr(&mxcsr);
98N/A mxcsr = (mxcsr & ~0x1f80) | (~((int)newmask << 7) & 0x1f80);
98N/A _putmxcsr(mxcsr);
98N/A return (oldmask);
98N/A}
98N/A