11.11She/* $NetBSD: fpgetround.c,v 1.11 2012/03/21 20:07:52 he Exp $ */ 21.1Scgd 31.1Scgd/* 41.1Scgd * Copyright (c) 1995 Christopher G. Demetriou 51.1Scgd * All rights reserved. 61.3Scgd * 71.1Scgd * Redistribution and use in source and binary forms, with or without 81.1Scgd * modification, are permitted provided that the following conditions 91.1Scgd * are met: 101.1Scgd * 1. Redistributions of source code must retain the above copyright 111.1Scgd * notice, this list of conditions and the following disclaimer. 121.1Scgd * 2. Redistributions in binary form must reproduce the above copyright 131.1Scgd * notice, this list of conditions and the following disclaimer in the 141.1Scgd * documentation and/or other materials provided with the distribution. 151.1Scgd * 3. All advertising materials mentioning features or use of this software 161.1Scgd * must display the following acknowledgement: 171.3Scgd * This product includes software developed for the 181.6Ssalo * NetBSD Project. See http://www.NetBSD.org/ for 191.3Scgd * information about NetBSD. 201.1Scgd * 4. The name of the author may not be used to endorse or promote products 211.3Scgd * derived from this software without specific prior written permission. 221.3Scgd * 231.1Scgd * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 241.1Scgd * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 251.1Scgd * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 261.1Scgd * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 271.1Scgd * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 281.1Scgd * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 291.1Scgd * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 301.1Scgd * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 311.1Scgd * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 321.1Scgd * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 331.3Scgd * 341.3Scgd * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>> 351.1Scgd */ 361.1Scgd 371.5Sthorpej#include <sys/cdefs.h> 381.8Slukem#if defined(LIBC_SCCS) && !defined(lint) 391.11She__RCSID("$NetBSD: fpgetround.c,v 1.11 2012/03/21 20:07:52 he Exp $"); 401.8Slukem#endif /* LIBC_SCCS and not lint */ 411.5Sthorpej 421.5Sthorpej#include "namespace.h" 431.5Sthorpej 441.1Scgd#include <sys/types.h> 451.1Scgd#include <ieeefp.h> 461.5Sthorpej 471.5Sthorpej#ifdef __weak_alias 481.5Sthorpej__weak_alias(fpgetround,_fpgetround) 491.5Sthorpej#endif 501.1Scgd 511.1Scgdfp_rnd 521.10Smattfpgetround(void) 531.1Scgd{ 541.10Smatt union { 551.10Smatt double d; 561.10Smatt uint64_t u64; 571.10Smatt } fpcrval; 581.1Scgd 591.10Smatt __asm("excb; mf_fpcr %0; excb" : "=f" (fpcrval.d)); 601.1Scgd 611.11She return ((fp_rnd)(fpcrval.u64 >> 58) & 0x3); 621.1Scgd} 63