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authorRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
committerRoland McGrath <roland@gnu.org>1995-10-16 01:37:51 +0000
commit8f5ca04bc7fd53741d80117df992995ace8f6d2d (patch)
treee39c13fc198b22ec55647259a8080051988e8c69 /sysdeps/generic
parent5d82cf5c55f56ae10d3b0a205d1fcc7de1cf56a0 (diff)
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Sat Oct 14 02:52:36 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
	* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Sat Oct 14 02:52:36 1995  Ulrich Drepper  <drepper@ipd.info.uni-karlsruhe.de>

	* malloc/malloc.c (_malloc_internal): Performance fix.  Move
	if statement out of loop.

	* stdio/_itoa.c, stdio/_itoa.h: Complete rewrite.  Much faster
	implementation using GMP functions.  Contributed by
	Torbjorn Granlund and Ulrich Drepper.

	* stdio/test_rdwr.c: Include <errno.h>.

	* sysdeps/i386/i586/Implies: New file.

	New highly optimized string functions for i[345]86.
	* sysdeps/i386/memchr.S, sysdeps/i386/memcmp.S: New files.
        * sysdeps/i386/stpcpy.S, sysdeps/i386/stpncpy.S: New files.
        * sysdeps/i386/strchr.S, sysdeps/i386/strcspn.S: New files.
        * sysdeps/i386/strpbrk.S, sysdeps/i386/strrchr.S: New files.
        * sysdeps/i386/strspn.S, sysdeps/i386/i486/strcat.S: New files.
        * sysdeps/i386/i486/strlen.S, sysdeps/i386/i586/strchr.S: New files.
        * sysdeps/i386/i586/strlen.S: New file.
	* sysdeps/i386/memchr.c: Removed.  There is now an assembler version.

	* sysdeps/i386/i586/memcopy.h (WORD_COPY_BWD): Parameters did
	not correspond to used values.

	* sysdeps/unix/sysv/linux/nfs/nfs.h: New file.  Simply a wrapper
        around a kernel header file.
	* sysdeps/unix/sysv/linux/Dist: Add it.
	* sysdeps/unix/sysv/linux/Makefile [$(subdir)=sunrpc] (headers):
	Likewise.

	* sysdeps/unix/sysv/linux/local_lim.h: Rewrite.  Instead of
        defining ourself we use a kernel header file.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (DO_CALL): Optimize system
        call handler for i586.

	* sysdeps/unix/sysv/linux/sys/param.h: Add copyright and clean up.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r--sysdeps/generic/divmod_1.c6
-rw-r--r--sysdeps/generic/mod_1.c2
2 files changed, 2 insertions, 6 deletions
diff --git a/sysdeps/generic/divmod_1.c b/sysdeps/generic/divmod_1.c
index d156eeb00d..2989d36708 100644
--- a/sysdeps/generic/divmod_1.c
+++ b/sysdeps/generic/divmod_1.c
@@ -83,14 +83,12 @@ __mpn_divmod_1 (quot_ptr, dividend_ptr, dividend_size, divisor_limb)
 	     result is a (N+1)-bit approximation to 1/DIVISOR_LIMB, with the
 	     most significant bit (with weight 2**N) implicit.  */
 
-#if 0 /* This can't happen when normalization_steps != 0 */
 	  /* Special case for DIVISOR_LIMB == 100...000.  */
 	  if (divisor_limb << 1 == 0)
 	    divisor_limb_inverted = ~(mp_limb) 0;
 	  else
-#endif
-	  udiv_qrnnd (divisor_limb_inverted, dummy,
-		      -divisor_limb, 0, divisor_limb);
+	    udiv_qrnnd (divisor_limb_inverted, dummy,
+			-divisor_limb, 0, divisor_limb);
 
 	  n1 = dividend_ptr[dividend_size - 1];
 	  r = n1 >> (BITS_PER_MP_LIMB - normalization_steps);
diff --git a/sysdeps/generic/mod_1.c b/sysdeps/generic/mod_1.c
index ae4ed0914f..8a49fb4be0 100644
--- a/sysdeps/generic/mod_1.c
+++ b/sysdeps/generic/mod_1.c
@@ -3,8 +3,6 @@
    Return the single-limb remainder.
    There are no constraints on the value of the divisor.
 
-   QUOT_PTR and DIVIDEND_PTR might point to the same limb.
-
 Copyright (C) 1991, 1993, 1994, Free Software Foundation, Inc.
 
 This file is part of the GNU MP Library.