mirror of
git://git.sv.gnu.org/coreutils
synced 2026-06-06 23:59:19 -04:00
Jim Meyering
43 lines
886 B
C
43 lines
886 B
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <sys/types.h>
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#include <ctype.h>
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#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
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#define ISASCII(c) 1
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#else
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#define ISASCII(c) isascii(c)
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#endif
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#define ISUPPER(c) (ISASCII (c) && isupper (c))
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#if _LIBC || STDC_HEADERS
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# define TOLOWER(c) tolower (c)
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#else
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# define TOLOWER(c) (ISUPPER (c) ? tolower (c) : (c))
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#endif
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#include "memcasecmp.h"
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/* Like memcmp, but ignore differences in case. */
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int
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memcasecmp (vs1, vs2, n)
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const void *vs1;
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const void *vs2;
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size_t n;
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{
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unsigned int i;
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unsigned char *s1 = (unsigned char *) vs1;
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unsigned char *s2 = (unsigned char *) vs2;
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for (i = 0; i < n; i++)
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{
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unsigned char u1 = *s1++;
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unsigned char u2 = *s2++;
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if (TOLOWER (u1) != TOLOWER (u2))
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return TOLOWER (u1) - TOLOWER (u2);
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}
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return 0;
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}
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