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gcc/libiberty/memcmp.c
DJ Delorie aaa5f039eb configure.in (MAKEINFO, PERL): Detect these.
* configure.in (MAKEINFO, PERL): Detect these.
(--enable-maintainer-mode): Add.
* configure: Regenerate.
* Makefile.in (MAKEINFO, PERL): Define.
(libiberty.info, libiberty.dvi, libiberty.html): New.
(CFILES): Add bsearch.c.
(CONFIGURED_OFILES): New, list of objects configure might add.
(maint-missing, maint-buildall): New, for maintainers only.
(clean, mostlyclean): Add info/dvi/html files.
* libiberty.texi, copying-lib.texi, obstacks.texi, functions.texi: New.
* gather-docs: New, for maintainers.
* maint-tool: New, for maintainers.
* alloca.c, atexit.c, basename.c, bcmp.c, bcopy.c, bsearch.c,
bzero.c, calloc.c, clock.c, configure.in, configure, getcwd.c,
getpagesize.c, getpwd.c, index.c, memchr.c, memcmp.c, memcpy.c,
memmove.c, memset.c, putenv.c, rename.c, rindex.c, setenv.c,
sigsetmask.c, strcasecmp.c, strchr.c, strdup.c, strerror.c,
strncasecmp.c, strncmp.c, strrchr.c, strstr.c, strtod.c, strtol.c,
tmpnam.c, vfork.c, vprintf.c, waitpid.c, xatexit.c, xexit.c,
xmalloc.c, xmemdup.c, xstrdup.c, xstrerror.c: Add or update
documentation.

Co-Authored-By: Phil Edwards <pedwards@disaster.jaj.com>

From-SVN: r45828
2001-09-26 14:16:17 -04:00

40 lines
969 B
C

/* memcmp -- compare two memory regions.
This function is in the public domain. */
/*
@deftypefn Supplemental int memcmp (const void *@var{x}, const void *@var{y}, size_t @var{count})
Compares the first @var{count} bytes of two areas of memory. Returns
zero if they are the same, a value less than zero if @var{x} is
lexically less than @var{y}, or a value greater than zero if @var{x}
is lexically greater than @var{y}. Note that lexical order is determined
as if comparing unsigned char arrays.
@end deftypefn
*/
#include <ansidecl.h>
#ifdef __STDC__
#include <stddef.h>
#else
#define size_t unsigned long
#endif
int
DEFUN(memcmp, (str1, str2, count),
const PTR str1 AND const PTR str2 AND size_t count)
{
register const unsigned char *s1 = (const unsigned char*)str1;
register const unsigned char *s2 = (const unsigned char*)str2;
while (count-- > 0)
{
if (*s1++ != *s2++)
return s1[-1] < s2[-1] ? -1 : 1;
}
return 0;
}