2000-06-16 04:56:25 +08:00
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/* strncmp -- compare two strings, stop after n bytes.
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This function is in the public domain. */
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2001-09-27 02:45:50 +08:00
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/*
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libiberty: documentation markup and order fixes.
libiberty/:
* splay-tree.c: Escape wrapping newlines in texinfo markup
with '@', to fix function declaration output rendering.
* gather-docs: Relax and improve macro name matching to actually
match all current names and to allow input line wrapping.
* bsearch.c, concat.c, crc32.c, fnmatch.txh, fopen_unlocked.c,
hashtab.c, insque.c, make-relative-prefix.c, memchr.c, memcmp.c,
memcpy.c, memmem.c, memmove.c, mempcpy.c, memset.c,
pexecute.txh, random.c, setenv.c, setproctitle.c,
simple-object.txh, snprintf.c, stpncpy.c, strncmp.c, strtod.c,
strtol.c, vasprintf.c, vprintf.c, vsnprintf.c, xmemdup.c:
Wrap long texinfo input lines.
* functions.texi: Regenerate.
2011-02-03 15:23:59 +08:00
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@deftypefn Supplemental int strncmp (const char *@var{s1}, @
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const char *@var{s2}, size_t @var{n})
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2001-09-27 02:45:50 +08:00
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Compares the first @var{n} bytes of two strings, returning a value as
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@code{strcmp}.
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@end deftypefn
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*/
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2000-06-16 04:56:25 +08:00
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#include <ansidecl.h>
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#include <stddef.h>
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int
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2005-03-28 10:09:01 +08:00
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strncmp(const char *s1, const char *s2, register size_t n)
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2000-06-16 04:56:25 +08:00
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{
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register unsigned char u1, u2;
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while (n-- > 0)
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{
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u1 = (unsigned char) *s1++;
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u2 = (unsigned char) *s2++;
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if (u1 != u2)
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return u1 - u2;
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if (u1 == '\0')
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return 0;
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}
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return 0;
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}
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