55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/* Copyright (C) 2001-2019 Artifex Software, Inc.
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All Rights Reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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Refer to licensing information at http://www.artifex.com or contact
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Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
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CA 94945, U.S.A., +1(415)492-9861, for further information.
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*/
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/*
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jbig2dec
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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
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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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