diff options
Diffstat (limited to 'lib/libc/quad/TESTS/divrem.c')
| -rw-r--r-- | lib/libc/quad/TESTS/divrem.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/libc/quad/TESTS/divrem.c b/lib/libc/quad/TESTS/divrem.c new file mode 100644 index 000000000000..a9471a2ec632 --- /dev/null +++ b/lib/libc/quad/TESTS/divrem.c @@ -0,0 +1,76 @@ +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This software was developed by the Computer Systems Engineering group + * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and + * contributed to Berkeley. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1992, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)divrem.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdio.h> + +main() +{ + union { long long q; unsigned long v[2]; } a, b, q, r; + char buf[300]; + extern long long __qdivrem(unsigned long long, unsigned long long, + unsigned long long *); + + for (;;) { + printf("> "); + if (fgets(buf, sizeof buf, stdin) == NULL) + break; + if (sscanf(buf, "%lu:%lu %lu:%lu", + &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4 && + sscanf(buf, "0x%lx:%lx 0x%lx:%lx", + &a.v[0], &a.v[1], &b.v[0], &b.v[1]) != 4) { + printf("eh?\n"); + continue; + } + q.q = __qdivrem(a.q, b.q, &r.q); + printf("%lx:%lx /%% %lx:%lx => q=%lx:%lx r=%lx:%lx\n", + a.v[0], a.v[1], b.v[0], b.v[1], + q.v[0], q.v[1], r.v[0], r.v[1]); + printf(" = %lX%08lX / %lX%08lX => %lX%08lX\n\ + = %lX%08lX %% %lX%08lX => %lX%08lX\n", + a.v[0], a.v[1], b.v[0], b.v[1], q.v[0], q.v[1], + a.v[0], a.v[1], b.v[0], b.v[1], r.v[0], r.v[1]); + } + exit(0); +} |