1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1992, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #if defined(LIBC_SCCS) && !defined(lint) 43 static char sccsid[] = "@(#)divrem.c 8.1 (Berkeley) 6/4/93"; 44 #endif /* LIBC_SCCS and not lint */ 45 #include <stdio.h> 46 47 main() 48 { 49 union { long long q; unsigned long v[2]; } a, b, q, r; 50 char buf[300]; 51 extern long long __qdivrem(unsigned long long, unsigned long long, 52 unsigned long long *); 53 54 for (;;) { 55 printf("> "); 56 if (fgets(buf, sizeof buf, stdin) == NULL) 57 break; 58 if (sscanf(buf, "%lu:%lu %lu:%lu", 59 &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 && 60 sscanf(buf, "0x%lx:%lx 0x%lx:%lx", 61 &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) { 62 printf("eh?\n"); 63 continue; 64 } 65 q.q = __qdivrem(a.q, b.q, &r.q); 66 printf("%lx:%lx /%% %lx:%lx => q=%lx:%lx r=%lx:%lx\n", 67 a.v[0], a.v[1], b.v[0], b.v[1], 68 q.v[0], q.v[1], r.v[0], r.v[1]); 69 printf(" = %lX%08lX / %lX%08lX => %lX%08lX\n\ 70 = %lX%08lX %% %lX%08lX => %lX%08lX\n", 71 a.v[0], a.v[1], b.v[0], b.v[1], q.v[0], q.v[1], 72 a.v[0], a.v[1], b.v[0], b.v[1], r.v[0], r.v[1]); 73 } 74 exit(0); 75 } 76