NEWS.stable: log cherry-pick [e446f25]->[c092018] relocatable-shell: Update suggested...

[gnulib.git] / lib / memchr.c

diff --git a/lib/memchr.c b/lib/memchr.c
index 2398dc3..6709f6e 100644 (file)
--- a/lib/memchr.c
+++ b/lib/memchr.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1993, 1996, 1997, 1999, 2000, 2003, 2004, 2006, 2008
+/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2014
    Free Software Foundation, Inc.
 
    Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
@@ -45,8 +45,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 # define BP_SYM(sym) sym
 #endif
 
-#include "intprops.h"
-
 #undef __memchr
 #ifdef _LIBC
 # undef memchr
@@ -65,7 +63,7 @@ __memchr (void const *s, int c_in, size_t n)
      performance.  On 64-bit hardware, unsigned long is generally 64
      bits already.  Change this typedef to experiment with
      performance.  */
-  typedef unsigned long longword;
+  typedef unsigned long int longword;
 
   const unsigned char *char_ptr;
   const longword *longword_ptr;
@@ -94,20 +92,20 @@ __memchr (void const *s, int c_in, size_t n)
   repeated_one = 0x01010101;
   repeated_c = c | (c << 8);
   repeated_c |= repeated_c << 16;
-  if (0xffffffffU < TYPE_MAXIMUM (longword))
+  if (0xffffffffU < (longword) -1)
     {
       repeated_one |= repeated_one << 31 << 1;
       repeated_c |= repeated_c << 31 << 1;
       if (8 < sizeof (longword))
-       {
-         size_t i;
-
-         for (i = 64; i < sizeof (longword) * 8; i *= 2)
-           {
-             repeated_one |= repeated_one << i;
-             repeated_c |= repeated_c << i;
-           }
-       }
+        {
+          size_t i;
+
+          for (i = 64; i < sizeof (longword) * 8; i *= 2)
+            {
+              repeated_one |= repeated_one << i;
+              repeated_c |= repeated_c << i;
+            }
+        }
     }
 
   /* Instead of the traditional loop which tests each byte, we will test a
@@ -146,8 +144,8 @@ __memchr (void const *s, int c_in, size_t n)
       longword longword1 = *longword_ptr ^ repeated_c;
 
       if ((((longword1 - repeated_one) & ~longword1)
-          & (repeated_one << 7)) != 0)
-       break;
+           & (repeated_one << 7)) != 0)
+        break;
       longword_ptr++;
       n -= sizeof (longword);
     }
@@ -164,7 +162,7 @@ __memchr (void const *s, int c_in, size_t n)
   for (; n > 0; --n, ++char_ptr)
     {
       if (*char_ptr == c)
-       return (void *) char_ptr;
+        return (void *) char_ptr;
     }
 
   return NULL;