Update. cvs/libc-ud-970322

1997-03-23 02:11  Ulrich Drepper  <drepper@cygnus.com>

	* time/sys/time.h: Make values ITIMER_* also available as macros.

	* elf/dl-support.c (_dl_sysdep_read_whole_file): Don't call
	__fstat but instead __fxstat directly to avoid dependency on
	libc.a when inline failed.
	* sysdeps/generic/dl-sysdep.c (_dl_sysdep_read_whole_file): Likewise.

	* math/Makefile (libm-routines): Add s_remquo.
	* sysdeps/libm-i387/s_remquo.S: New file.
	* sysdeps/libm-i387/s_remquof.S: New file.
	* sysdeps/libm-i387/s_remquol.S: New file.
	* sysdeps/libm-ieee754/s_remquo.c: New file.
	* sysdeps/libm-ieee754/s_remquof.c: New file.
	* sysdeps/libm-ieee754/s_remquol.c: New file.

	* math/libm-test.c (remquo_test): New function.

	* sysdeps/libm-ieee754/s_rintl.c: Handle implicit leading one
	correctly.

1997-03-22 14:06  Ulrich Drepper  <drepper@cygnus.com>

	* math/Makefile (libm-calls): Add s_nan.
	* sysdeps/libm-ieee754/s_nan.c: New file.  Implement `nan' function.
	* sysdeps/libm-ieee754/s_nanf.c: New file.  Implement `nanf' function.
	* sysdeps/libm-ieee754/s_nanl.c: New file.  Implement `nanl' function.

	* math/libm-test.c (basic_tests): Add tests for `nan' function.

	* math/libm-test.c (copysign_test): New function.
	(main): Call copysign_test.

1997-03-22 06:28  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/s_nextafter.c: Return y if x == y.
	* sysdeps/libm-ieee754/s_nextafterf.c: Likewise.
	* sysdeps/libm-ieee754/s_nextafterl.c: Likewise.
	* sysdeps/libm-i387/s_nextafterl.c: Likewise.

	* math/libm-test.c (fdim_test, fmin_test, fmax_test, nextafter_test):
	New functions.  Test these functions.
	(main): Call above new functions.

1997-03-22 04:53  Ulrich Drepper  <drepper@cygnus.com>

	* Net release 2.0.2.

1997-03-22 04:37  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/termbits.h (OXTABS): Define as alias for
	XTABS.
	* sysdeps/unix/sysv/linux/alpha/termbits.h (OXTABS): Likewise.
	* termios/sys/ttydefaults.h: Partly revert patch by Andreas Schwab
	of Sun Dec 15 16:33:44 1996.
	Proposed by Thomas Bushnell <thomas@gnu.ai.mit.edu>.

1997-03-21 13:41  Roland McGrath  <roland@baalperazim.frob.com>

	* sysdeps/sparc/dl-machine.h (elf_machine_rel): Rewritten as for i386.
	Check here for non-SHN_UNDEF STB_LOCAL symbols don't do any lookup or
	consult their values.
	(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p,
	ELF_MACHINE_RELOC_NOPLT): New macros.

	* elf/rtld.c (dl_main): Pass ELF_MACHINE_RELOC_NOPLT to
	_dl_lookup_symbol in place of DL_LOOKUP_NOPLT.
	* sysdeps/i386/dl-machine.h (ELF_MACHINE_RELOC_NOPLT): New macro.

	* sysdeps/i386/dl-machine.h (elf_machine_rel): Rewritten to do the
	symbol lookup before checking reloc type except for R_386_RELATIVE.
	(elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p): New macros.

	* elf/dl-reloc.c (RESOLVE): Remove STB_LOCAL check; let it be
	per-machine since it supposedly can't happen on i386.

	* elf/dl-lookup.c (do_lookup): Change arg FLAGS to RELOC_TYPE.  Use
	elf_machine_lookup_{noexec,noplt}_p macros on it.  Remove gratuitous
	indirection from REF arg; change callers.
	(_dl_lookup_symbol, _dl_lookup_versioned_symbol): Change arg name.
	(_dl_lookup_symbol_skip, _dl_lookup_versioned_symbol_skip): Remove
	FLAGS arg altogether.
	* elf/dlsym.c: Remove argument of FLAGS parameter.
	* elf/dlvsym.c: Likewise.
	* elf/link.h: Update decls.

	* Makefile (distribute): Add BUGS.

1 files changed, 106 insertions, 0 deletions

diff --git a/sysdeps/libm-ieee754/s_remquo.c b/sysdeps/libm-ieee754/s_remquo.c
new file mode 100644
index 0000000000..5a96f75f3b
--- /dev/null
+++ b/sysdeps/libm-ieee754/s_remquo.c
@@ -0,0 +1,106 @@
+/* Compute remainder and a congruent to the quotient.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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.
+
+   The GNU C Library 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.
+
+   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.  */
+
+#include <math.h>
+
+#include "math_private.h"
+
+
+static const double zero = 0.0;
+
+
+double
+__remquo (double x, double y, int *quo)
+{
+  int32_t hx,hp;
+  u_int32_t sx,lx,lp;
+  int cquo;
+
+  EXTRACT_WORDS (hx, lx, x);
+  EXTRACT_WORDS (hp, lp, p);
+  sx = hx & 0x80000000;
+  qs = (sx ^ (hp & 0x80000000)) >> 31;
+  hp &= 0x7fffffff;
+  hx &= 0x7fffffff;
+
+  /* Purge off exception values.  */
+  if ((hp | lp) == 0)
+    return (x * p) / (x * p); 			/* p = 0 */
+  if ((hx >= 0x7ff00000)			/* x not finite */
+      || ((hp >= 0x7ff00000)			/* p is NaN */
+	  && (((hp - 0x7ff00000) | lp) != 0)))
+    return (x * p) / (x * p);
+
+  if (hp <= 0x7fbfffff)
+    {
+      x = __ieee754_fmod (x, 8 * p);		/* now x < 8p */
+
+      if (fabs (x) >= 4 * fabs (p))
+	cquo += 4;
+    }
+
+  if (((hx - hp) | (lx - lp)) == 0)
+    {
+      *quo = qs ? -1 : 1;
+      return zero * x;
+    }
+
+  x  = fabs (x);
+  p  = fabs (p);
+  cquo = 0;
+
+  if (x >= 2 * p)
+    {
+      x -= 4 * p;
+      cquo += 2;
+    }
+  if (x >= p)
+    {
+      x -= 2 * p;
+      ++cquo;
+    }
+
+  if (hp < 0x00200000)
+    {
+      if (x + x > p)
+	{
+	  x -= p;
+	  if (x + x >= p)
+	    x -= p;
+	}
+    }
+  else
+    {
+      double p_half = 0.5 * p;
+      if(x > p_half)
+	{
+	  x -= p;
+	  if (x >= p_half)
+	    x -= p;
+	}
+    }
+
+  *quo = qs ? -cquo : cquo;
+
+  GET_HIGH_WORD (hx, x);
+  SET_HIGH_WORD (x, hx ^ sx);
+  return x;
+}
+weak_alias (__remquo, remquo)