glibc/sysdeps/libm-ieee754/s_fpclassify.c
Ulrich Drepper f166d86530 Update.
1997-03-09 06:59  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig: Add ASFLAGS-% flags for SPARC assembler which need
	-fPIC.
	* Makerules (compile.S): Use ASFLAGS-%.
	(COMPILE.S): Likewise.
	* config.make.in (ASFLAGS-.so): Define from ASFLAGS_SO.
	* configure.in: Substitute ASFLAGS_SO.
	* sysdeps/sparc/configure.in: New file.

	* posix/unitstd.h: Add prototype for __euidaccess.
	* sysdeps/posix/euidaccess.c: Define as __euidaccess and make
	euidaccess weak alias.
	* sysdeps/stubs/euidaccess.c: Likewise.
	* inet/rcmd.c: Use __ protected versions of non-standard functions.

	* locale/setlocale.c (setlocale): Don't set usage_count to
	MAX_USAGE_COUNT if it already has this value.

	* locale/programs/localedef.c: Don't use LOCALE_PATH to find
	binary locale files.  Use LOCALEDIR only.
	* locale/programs/locfile.c: When named file not found and not
	absolute use path in I18NPATH.

	* stdlib/Makefile (headers): Add inttypes.h.

	* sysdpes/generic/socketbits.h: Add PF_FILE as synonym for PF_LOCAL
	and AF_FILE as synonym for AF_LOCAL.
	* sysdpes/unix/sysv/linux/socketbits.h: Likewise.

	* time/Makefile: Rewrite rules for test to handle parallel builds.

1997-03-09 05:26  Ulrich Drepper  <drepper@cygnus.com>

	* manual/startup.texi (EXIT_FAILURE): Fix typo.  Patch by
	robbe@orcus.priv.at.

1997-03-09 05:10  Edward Seidl  <seidl@janed.com>

	* sysdeps/i386/elf/start.S (nofini): *Really* align stack to
	8-byte boundary.

1997-03-09 01:48  Ulrich Drepper  <drepper@cygnus.com>

	* elf/link.h: Define __need_NULL to get definition.  Include
	<features.h>.
	Patch by Andreas Jaeger  <aj@arthur.pfalz.de>.

1997-03-08 21:48  Thorsten Kukuk  <kukuk@tk.uni-paderborn.de>

	Rewrite NIS code to allow empty keys.
	* nis/nss_nis/nis-ethers.c: Rewritten.
	* nis/nss_nis/nis-proto.c: Rewritten.
	* nis/nss_nis/nis-publickey.c: Rewritten.
	* nis/nss_nis/nis-rpc.c: Rewritten.
	* nis/nss_nis/nis-service.c: Rewritten.

1997-03-08 16:02  Andreas Jaeger  <aj@arthur.pfalz.de>

	* time/scheck.c (scheck): Add extra const to second argument.

	* time/private.h: Correct prototypes to match definition.

1997-03-08 18:55  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/alpha/__math.h: Remove cabs inline definition.
	Reported by Philip Blundell <pjb27@cam.ac.uk>.

	Reported by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
	Bug report by Andreas Jaeger <jaeger@informatik.uni-kl.de>.
1997-03-09 06:16:49 +00:00

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C

/* Return classification value corresponding to argument.
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"
int
__fpclassify (double x)
{
u_int32_t hx, lx;
int retval = FP_NORMAL;
EXTRACT_WORDS (hx, lx, x);
lx |= hx & 0xfffff;
hx &= 0x7ff00000;
if ((hx | lx) == 0)
retval = FP_ZERO;
else if (hx == 0)
retval = FP_SUBNORMAL;
else if (hx == 0x7ff00000)
retval = lx != 0 ? FP_NAN : FP_INFINITE;
return retval;
}