old-cross-binutils/libiberty/strncmp.c
Ralf Wildenhues d4d868a280 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 07:23:59 +00:00

34 lines
638 B
C

/* strncmp -- compare two strings, stop after n bytes.
This function is in the public domain. */
/*
@deftypefn Supplemental int strncmp (const char *@var{s1}, @
const char *@var{s2}, size_t @var{n})
Compares the first @var{n} bytes of two strings, returning a value as
@code{strcmp}.
@end deftypefn
*/
#include <ansidecl.h>
#include <stddef.h>
int
strncmp(const char *s1, const char *s2, register size_t n)
{
register unsigned char u1, u2;
while (n-- > 0)
{
u1 = (unsigned char) *s1++;
u2 = (unsigned char) *s2++;
if (u1 != u2)
return u1 - u2;
if (u1 == '\0')
return 0;
}
return 0;
}