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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include "lint.h" 33 #include <sys/types.h> 34 #include <sys/dl.h> 35 #include "libc.h" 36 37 dl_t 38 ldivide(dl_t lop, dl_t rop) 39 { 40 int cnt; 41 dl_t ans; 42 dl_t tmp; 43 dl_t div; 44 45 if (lsign(lop)) 46 lop = lsub(lzero, lop); 47 if (lsign(rop)) 48 rop = lsub(lzero, rop); 49 50 ans = lzero; 51 div = lzero; 52 53 for (cnt = 0; cnt < 63; cnt++) { 54 div = lshiftl(div, 1); 55 lop = lshiftl(lop, 1); 56 if (lsign(lop)) 57 div.dl_lop |= 1; 58 tmp = lsub(div, rop); 59 ans = lshiftl(ans, 1); 60 if (lsign(tmp) == 0) { 61 ans.dl_lop |= 1; 62 div = tmp; 63 } 64 } 65 66 return (ans); 67 } 68