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| 1 | /*
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| 2 | * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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| 3 | * See the copyright notice in the ACK home directory, in the file "Copyright".
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| 4 | */
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| 5 | /* $Id: strcmp.c,v 1.1.1.1 2005/04/21 14:56:06 beng Exp $ */
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| 6 |
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| 7 | #include <string.h>
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| 8 |
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| 9 | int
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| 10 | strcmp(register const char *s1, register const char *s2)
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| 11 | {
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| 12 | while (*s1 == *s2++) {
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| 13 | if (*s1++ == '\0') {
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| 14 | return 0;
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| 15 | }
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| 16 | }
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| 17 | if (*s1 == '\0') return -1;
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| 18 | if (*--s2 == '\0') return 1;
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| 19 | return (unsigned char) *s1 - (unsigned char) *s2;
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| 20 | }
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