1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */ 23*0Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 24*0Sstevel@tonic-gate /* All Rights Reserved */ 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 28*0Sstevel@tonic-gate * Use is subject to license terms. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #pragma weak fpsetround = _fpsetround 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #include "synonyms.h" 36*0Sstevel@tonic-gate #include <ieeefp.h> 37*0Sstevel@tonic-gate #include "fp.h" 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate extern void _getmxcsr(int *), _putmxcsr(int); 40*0Sstevel@tonic-gate 41*0Sstevel@tonic-gate fp_rnd 42*0Sstevel@tonic-gate fpsetround(fp_rnd newrnd) 43*0Sstevel@tonic-gate { 44*0Sstevel@tonic-gate struct _cw87 cw; 45*0Sstevel@tonic-gate fp_rnd oldrnd; 46*0Sstevel@tonic-gate int mxcsr; 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate newrnd &= 0x3; /* mask off all ubt last 2 bits */ 49*0Sstevel@tonic-gate _getcw(&cw); 50*0Sstevel@tonic-gate oldrnd = (fp_rnd)cw.rnd; 51*0Sstevel@tonic-gate cw.rnd = newrnd; 52*0Sstevel@tonic-gate _putcw(cw); 53*0Sstevel@tonic-gate _getmxcsr(&mxcsr); 54*0Sstevel@tonic-gate mxcsr = (mxcsr & ~0x6000) | ((int)newrnd << 13); 55*0Sstevel@tonic-gate _putmxcsr(mxcsr); 56*0Sstevel@tonic-gate return (oldrnd); 57*0Sstevel@tonic-gate } 58