glibc/sysdeps/m68k/s_isinfl.c
Ulrich Drepper 569c558c88 update from main archive 960909
Mon Sep  9 20:31:27 1996  Ulrich Drepper  <drepper@cygnus.com>

	* version.c (banner): Report to bug-glibc@prep not @gnu.
	Reported by Andreas Jaeger.

	* libio/stdio.h [!__USE_REENTRANT]: Don't define getc as
 	_IO_getc_unlocked.
	[__USE_REENTRANT]: Don't define

Mon Sep  9 15:59:32 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/strrchr.c: Fix bug where NUL byte is not recognized
	when it is the third byte in the string.  Reported by
	NIIBE Yutaka.
	* string/tester.c: Add tests for above bug to strlen, strchr, and
	strrchr tests.

Fri Sep  6 21:23:33 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/fpu/e_acos.c: Deansideclized.  Include
	"math_private.h" to get prototype.
	* sysdeps/m68k/fpu/e_fmod.c: Likewise.
	* sysdeps/m68k/fpu/k_cos.c: Likewise.
	* sysdeps/m68k/fpu/k_sin.c: Likewise.
	* sysdeps/m68k/fpu/k_tan.c: Likewise.

	* sysdeps/m68k/fpu/k_sin.c: Remove uneeded indirection of
	__m81_u.
	* sysdeps/m68k/fpu/k_tan.c: Likewise.

Sun Sep  1 18:01:35 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/m68k/fpu/__math.h: Check for __NO_M81_MATH_INLINES
	instead of __NO_MATH_INLINES.
	(__M81_MATH_INLINES): Renamed from __MATH_INLINES.
	* sysdeps/m68k/fpu/e_acos.c: Define __NO_M81_MATH_INLINES.
	* sysdeps/m68k/fpu/e_fmod.c: Likewise.
	* sysdeps/m68k/fpu/k_cos.c: Likewise.
	* sysdeps/m68k/fpu/k_sin.c: Likewise.
	* sysdeps/m68k/fpu/k_tan.c: Likewise.
	* sysdeps/m68k/fpu/s_atan.c: Likewise.
	* sysdeps/m68k/fpu/s_frexp.c: Likewise.
	* sysdeps/m68k/fpu/s_ilogb.c: Likewise.
	* sysdeps/m68k/fpu/s_isinf.c: Likewise.
	* sysdeps/m68k/fpu/s_ldexp.c: Likewise.
	* sysdeps/m68k/fpu/s_modf.c: Likewise.
	* sysdeps/m68k/fpu/k_cos.c: Use inline version of __cos.
	* sysdeps/m68k/fpu/k_sin.c: Likewise.
	* sysdeps/m68k/fpu/k_tan.c: Likewise.

Mon Sep  9 12:55:14 1996  Ulrich Drepper  <drepper@cygnus.com>

	* nss/nss_files/files-parse.c (INT_FIELD_MAYBE_NULL): Check for
	available character before converting number and return with
	error if none is available.

Fri Sep  6 22:09:08 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/init-first.h: New file, generic
	implementation for architectures where parameters are passed on
	stack.
	* sysdeps/unix/sysv/linux/m68k/init-first.h: Removed.
	* sysdeps/unix/sysv/linux/i386/init-first.h: Removed.

Fri Sep  6 22:05:32 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* configure.in: Remove unneeded sysnames frobbing.

Mon Sep  9 05:29:09 1996  Ulrich Drepper  <drepper@cygnus.com>

	* time/zic.c: Update from ADO 96l.
	* time/africa: Update from ADO 96k.
	* time/antarctica: Likewise.
	* time/asia: Likewise.
	* time/australia: Likewise.
	* time/europe: Likewise.
	* time/northamerica: Likewise.
	* time/southamerica: Likewise.

Mon Sep  9 05:03:47 1996  NIIBE Yutaka  <gniibe@mri.co.jp>

	* sysdeps/unix/sysv/linux/i386/init-first.h: Work around buggy
	gcc <= 2.7.2.1 which optimizes away address operations on weak
	objects.

	* nss/nss_files/files-parse.c (INT_FIELD_MAYBE_NULL): New macro.
	Like INT_FIELD but also accept non-existing field.
	* shadow/sgetspent_r.c (LINE_PARSER): Use INT_FIELD_MAYBE_NULL
	for last four fields.
	* shadow/putspent.c (putspent): Print `:' after numeric value.

Mon Sep  9 02:42:48 1996  Richard Henderson  <rth@tamu.edu>

	* libio/stdio.h (BUFSIZ): Define using _IO_BUFSIZ.

Sun Sep  8 16:43:56 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Make-dist: Filter out $(add-ons) from $(subdirs).
	Don't distribute TAGS files.
	($(tardir).tar): Remove dist.tar when all is done.
	* manual/Makefile (distribute): Add libc.info*.
	* libio/Makefile (distribute): Add Banner.
	* inet/Makefile (headers): Add netinet/tcp.h.

	* resolv/Makefile (libresolv-routines): Add getnetnamadr.

	* crypt-README: Removed.
	* gnu-stabs.h: Removed.

	* sysdeps/alpha/copysign.S: Renamed to...
	* sysdeps/alpha/s_copysign.S: ...this.
	* sysdeps/alpha/fabs.S: Renamed to...
	* sysdeps/alpha/s_fabs.S: ...this.

	* sysdeps/m68k/isinfl.c: Renamed to...
	* sysdeps/m68k/s_isinfl.c: ...this.
	* sysdeps/m68k/isnanl.c: Renamed to...
	* sysdeps/m68k/s_isnanl.c: ...this.

	* sysdeps/sparc/sqrt.c: Renamed to...
	* sysdeps/sparc/e_sqrt.c: ...this.  Function name now is
	__ieee754_sqrt.

	* sysdeps/generic/get_str.c: Removed.

	* sysdeps/ieee754/cbrt.c: Removed.
	* sysdeps/ieee754/drem.c: Removed.
	* sysdeps/ieee754/logb.c: Removed.
	* sysdeps/ieee754/sqrt.c: Removed.

	* sysdeps/stub/cbrt.c: Removed.
	* sysdeps/stub/cos.c: Removed.
	* sysdeps/stub/drem.c: Removed.
	* sysdeps/stub/isinf.c: Removed.
	* sysdeps/stub/isinfl.c: Removed.
	* sysdeps/stub/isnanl.c: Removed.
	* sysdeps/stub/logb.c: Removed.
	* sysdeps/stub/sin.c: Removed.
	* sysdeps/stub/sqrt.c: Removed.

	* sysdeps/tahoe/log10.c: Removed.

	* sysdeps/vax/index.s: Removed.
	* sysdeps/vax/rindex.s: Removed.
	* sysdeps/vax/bcmp.s: Removed.
	* sysdeps/vax/log10.c: Removed.
	* sysdeps/vax/infnan.c: Removed.
	* sysdeps/vax/Dist: Add fl.h.

	* sysdeps/unix/sysv/linux/alpha/Dist: Add llseek.S.

	* inet/rcmd.c (rcmd): Make messages more uniform.

Sun Sep  8 14:15:42 1996  Ulrich Drepper  <drepper@cygnus.com>

	* po/de.po: Update.
	* po/es.po: Update.
	* po/ko.po: Update.
	* po/pl.po: New file.
	* po/nl.po: New file.

	take care for a possible clash.  Nobody will name the domain
1996-09-10 02:00:15 +00:00

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1.4 KiB
C

/* Copyright (C) 1991, 1992, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <math.h>
#include "ieee754.h"
#undef __isinfl
#undef isinfl
/* Return 0 if VALUE is finite or NaN, +1 if it
is +Infinity, -1 if it is -Infinity. */
int
__isinfl (long double value)
{
union ieee854_long_double u;
u.d = value;
/* An IEEE 854 infinity has an exponent with the
maximum possible value and a zero mantissa.
In Motorola's interpretation the integer bit is ignored. */
if ((u.ieee.exponent & 0x7fff) == 0x7fff &&
(u.ieee.mantissa0 & 0x7fffffff) == 0 && u.ieee.mantissa1 == 0)
return u.ieee.negative ? -1 : 1;
return 0;
}
weak_alias (__isinfl, isinfl);