1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1995 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "_Qquad.h" 30 #include "_Qglobals.h" 31 32 unsigned 33 _Q_qtou(QUAD x) 34 { 35 unpacked px; 36 QUAD c; 37 unsigned u,*pc = (unsigned*)&c,r; 38 enum fp_direction_type saved_fp_direction = fp_direction; 39 40 pc[0] = 0x401e0000; pc[1]=pc[2]=pc[3]=0; /* c = 2^31 */ 41 r = 0; 42 u = *(int*)&x; /* high part of x */ 43 if(u>=0x401e0000&&u<0x401f0000) { 44 r = 0x80000000; 45 x = _Q_sub(x,c); 46 } 47 48 _fp_current_exceptions = 0; 49 fp_direction = fp_tozero; 50 _fp_unpack(&px, (int *)&x,fp_op_extended); 51 _fp_pack(&px, (int *)&u,fp_op_integer); 52 _Q_set_exception(_fp_current_exceptions); 53 fp_direction = saved_fp_direction; 54 return (u|r); 55 } 56