50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
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/*
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jbig2dec
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Copyright (C) 2001-2005 Artifex Software, Inc.
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This software is distributed under license and may not
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be copied, modified or distributed except as expressly
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authorized under the terms of the license contained in
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the file LICENSE in this distribution.
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For further licensing information refer to http://artifex.com/ or
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contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stddef.h>
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/* replacement for broken memcmp() */
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/*
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* compares two byte strings 'a' and 'b', both assumed to be 'len' bytes long
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* returns zero if the two strings are identical, otherwise returns -1 or 1
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* depending on the relative magnitude of the first differing elements,
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* considered as unsigned chars
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*/
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int memcmp(const void *b1, const void *b2, size_t len)
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{
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unsigned char *a, *b;
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size_t i;
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a = (unsigned char *)b1;
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b = (unsigned char *)b2;
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for(i = 0; i < len; i++) {
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if (*a != *b) {
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/* strings differ */
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return (*a < *b) ? -1 : 1;
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}
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a++;
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b++;
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}
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/* strings match */
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return 0;
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}
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