93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
/* $NetBSD: swabcheck.c,v 1.2 2001/05/24 21:04:47 kleink Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code was contributed to The NetBSD Foundation by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <err.h>
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#define MAXCHK 100
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static void
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build(char *a, char *b, size_t n) {
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size_t i;
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n >>= 1;
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for (i = 0; i < n; i += 2) {
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b[i+1] = a[i] = (char)i;
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b[i] = a[i+1] = (char)(i+1);
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}
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for (n <<= 1; n < MAXCHK; n++)
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a[n] = b[n] = (char)~0;
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}
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static void
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dump(f, b, l)
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const char *f;
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char *b;
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size_t l;
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{
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printf("%s ", f);
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while (l--)
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printf("%.2x ", (unsigned char)*b++);
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printf("\n");
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}
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int
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main(int argc, char *argv[])
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{
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char a[MAXCHK], b[MAXCHK], r[MAXCHK];
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size_t i;
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for (i = 0; i < MAXCHK; i += 2) {
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build(a, b, i);
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(void)memset(r, ~0, MAXCHK);
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swab(a, r, i);
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if (memcmp(b, r, MAXCHK) != 0) {
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warnx("pattern mismatch at %lu bytes\n",
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(unsigned long)i);
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dump("expect:", b, MAXCHK);
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dump("result:", r, MAXCHK);
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return 1;
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}
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}
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return 0;
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}
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