From: loth AT gec DOT net (Burton Radons)
To: djgpp-workers AT delorie DOT com
Subject: libc replacement (bcmp)
Date: Tue, 17 Mar 1998 12:57:22 GMT
Message-ID: <35107243.35844972@mail.gec.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 8bit
Precedence: bulk

See original message (Nearly same subject).  bcmp is only a modified
memcmp.  I haven't benchmarked it -- it shouldn't be significantly
different.  I have, of course, tested it.

- Burton Radons, loth AT gec DOT net
Vancouver Island, British Columbia, Canada

*** src/new/bcmp.c	Tue Mar 17 04:42:48 1998
--- src/libc/compat/bsd/bcmp.c	Wed Aug 23 00:56:02 1995
***************
*** 1,4 ****
! /* Copyright (C) 1998 DJ Delorie, see COPYING.DJ for details */
  #include <string.h>
  
  #undef bcmp
--- 1,4 ----
! /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
  #include <string.h>
  
  #undef bcmp
***************
*** 12,45 ****
    if (ptr1 == 0 || ptr2 == 0)
      return -1;
  
!   if (length != 0)
    {
!     const unsigned char *p1 = ptr1;
!     const unsigned char *p2 = ptr2;
! 
!     while (length > 4) {
!       if (*((int *) p1) != *((int *) p2)) {
!         if (*((short *) p1) != *((short *) p2)) {
!           if (*p1 != *p2)
!             return length;
! 
!           return length - 1;
!         }
! 
!         if (p1[2] != p2[2])
!           return length - 2;
! 
!         return length - 3;
!       }
! 
!       p1 += 4;
!       p2 += 4;
!       length -= 4;
!     }
! 
!     for (; length; length --)
!       if (*p1++ != *p2++)
!         return length;
    }
  
    return 0;
--- 12,22 ----
    if (ptr1 == 0 || ptr2 == 0)
      return -1;
  
!   while (length)
    {
!     if (*((const char *)ptr1)++ != *((const char *)ptr2)++)
!       return length;
!     length--;
    }
  
    return 0;