/* memrchr -- find the last occurrence of a byte in a memory block
- Copyright (C) 1991, 93, 96, 97, 99, 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1991, 1993, 1996, 1997, 1999, 2000, 2003 Free
+ Software Foundation, Inc.
+
Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
with help from Dan Sahlin (dan@sics.se) and
commentary by Jim Blandy (jimb@ai.mit.edu);
adaptation to memchr suggested by Dick Karpinski (dick@cca.ucsf.edu),
and implemented by Roland McGrath (roland@ai.mit.edu).
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
- The GNU C Library is distributed in the hope that it will be useful,
+ This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
-
-#undef __ptr_t
-#if defined (__cplusplus) || (defined (__STDC__) && __STDC__)
-# define __ptr_t void *
-#else /* Not C++ or ANSI C. */
-# define __ptr_t char *
-#endif /* C++ or ANSI C. */
+#include <string.h>
#if defined (_LIBC)
-# include <string.h>
# include <memcopy.h>
#else
# define reg_char char
#endif
-#if defined (HAVE_LIMITS_H) || defined (_LIBC)
-# include <limits.h>
-#endif
+#include <limits.h>
#define LONG_MAX_32_BITS 2147483647
-#ifndef LONG_MAX
-# define LONG_MAX LONG_MAX_32_BITS
-#endif
-
#include <sys/types.h>
#undef __memrchr
#endif
/* Search no more than N bytes of S for C. */
-__ptr_t
-__memrchr (s, c_in, n)
- const __ptr_t s;
- int c_in;
- size_t n;
+void *
+__memrchr (void const *s, int c_in, size_t n)
{
const unsigned char *char_ptr;
const unsigned long int *longword_ptr;
& (sizeof (longword) - 1)) != 0;
--n)
if (*--char_ptr == c)
- return (__ptr_t) char_ptr;
+ return (void *) char_ptr;
/* All these elucidatory comments refer to 4-byte longwords,
but the theory applies equally well to 8-byte longwords. */
#if LONG_MAX > 2147483647
if (cp[7] == c)
- return (__ptr_t) &cp[7];
+ return (void *) &cp[7];
if (cp[6] == c)
- return (__ptr_t) &cp[6];
+ return (void *) &cp[6];
if (cp[5] == c)
- return (__ptr_t) &cp[5];
+ return (void *) &cp[5];
if (cp[4] == c)
- return (__ptr_t) &cp[4];
+ return (void *) &cp[4];
#endif
if (cp[3] == c)
- return (__ptr_t) &cp[3];
+ return (void *) &cp[3];
if (cp[2] == c)
- return (__ptr_t) &cp[2];
+ return (void *) &cp[2];
if (cp[1] == c)
- return (__ptr_t) &cp[1];
+ return (void *) &cp[1];
if (cp[0] == c)
- return (__ptr_t) cp;
+ return (void *) cp;
}
n -= sizeof (longword);
while (n-- > 0)
{
if (*--char_ptr == c)
- return (__ptr_t) char_ptr;
+ return (void *) char_ptr;
}
return 0;