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 #include "lint.h" 31 #include <sys/types.h> 32 #include <sys/dl.h> 33 #include "libc.h" 34 35 dl_t 36 ldivide(dl_t lop, dl_t rop) 37 { 38 int cnt; 39 dl_t ans; 40 dl_t tmp; 41 dl_t div; 42 43 if (lsign(lop)) 44 lop = lsub(lzero, lop); 45 if (lsign(rop)) 46 rop = lsub(lzero, rop); 47 48 ans = lzero; 49 div = lzero; 50 51 for (cnt = 0; cnt < 63; cnt++) { 52 div = lshiftl(div, 1); 53 lop = lshiftl(lop, 1); 54 if (lsign(lop)) 55 div.dl_lop |= 1; 56 tmp = lsub(div, rop); 57 ans = lshiftl(ans, 1); 58 if (lsign(tmp) == 0) { 59 ans.dl_lop |= 1; 60 div = tmp; 61 } 62 } 63 64 return (ans); 65 } 66