Update.cvs/libc-ud-970316cvs/libc-970324cvs/libc-970323cvs/libc-970322cvs/libc-970321cvs/libc-970320cvs/libc-970319cvs/libc-970318cvs/libc-970317cvs/before-thomas-posix1996cvs/thomas-posix1996

1997-03-16 18:43  Ulrich Drepper  <drepper@cygnus.com>

	* manual/filesys.texi: Add documentation for scandir and alphasort.

	* math/math.c (fpclassify): Correct stupid typos.

	* math/libm-test.c: New file.  libm test suite by Andreas Jaeger.

	* nss/nss_files/files-hosts.c: Add gethostbyname2 imlementation.

	* posix/Makefile (routines): Add bsd-getpgrp.
	* posix/bsd-getpgrp.c: New file.
	* posix/unistd.h [__FAVOR_BSD]: Define macro getpgrp which maps
	calls to __bsd_getpgrp.

	* sysdeps/generic/getpgrp.c: De-ANSI-declfy.

	* sysdeps/i386/huge_val.h: New file.  ix87 specific infinity values.
	* sysdeps/m68k/huge_val.h: New file.  m68k specific infinity values.
	* sysdeps/generic/huge_val.h: Remove definition of long double
	definition.  Make it the same as the double definition.

	* sysdeps/libm-i387/e_acos.S: Fix bug in FPU stack handling.
	* sysdeps/libm-i387/e_acosf.S: Likewise.
	* sysdeps/libm-i387/e_acosl.S: Likewise.
	* sysdeps/libm-i387/e_asin.S: Likewise.
	* sysdeps/libm-i387/e_asinf.S: Likewise.
	* sysdeps/libm-i387/e_asinl.S: Likewise.
	* sysdeps/libm-i387/e_exp.S: Likewise.
	* sysdeps/libm-i387/e_expf.S: Likewise.
	* sysdeps/libm-i387/e_expl.S: Likewise.
	* sysdeps/libm-i387/e_scalbn.S: Likewise.
	* sysdeps/libm-i387/e_scalbnf.S: Likewise.
	* sysdeps/libm-i387/e_scalbnl.S: Likewise.

	* sysdeps/libm-i387/e_log.S: Optimize branch code.
	* sysdeps/libm-i387/e_logf.S: Likewise.
	* sysdeps/libm-i387/e_logl.S: Likewise.
	* sysdeps/libm-i387/e_log10.S: Likewise.
	* sysdeps/libm-i387/e_log10f.S: Likewise.
	* sysdeps/libm-i387/e_log10l.S: Likewise.

	* sysdeps/libm-i387/e_pow.S: Major rewrite to handle special cases.
	* sysdeps/libm-i387/e_powf.S: Likewise.
	* sysdeps/libm-i387/e_powl.S: Likewise.

	* sysdeps/libm-i387/e_expm1.S: Change return value for -inf
	argument to -1.0.
	* sysdeps/libm-i387/e_expm1f.S: Likewise.
	* sysdeps/libm-i387/e_expm1l.S: Likewise.

	* sysdeps/libm-i387/e_isinfl.c: Return -1 for -inf.

	* sysdeps/libm-i387/e_logbl.S: Correct return value.  Discard first
	stack element after fxtract.

	* sysdeps/libm-ieee754/e_atan2l.c: New file.  `long double'
	implementation for atan2 function.

	* sysdeps/libm-ieee754/k_standard.c: Return NAN for libm not in
	_SVID_ mode when acos, asin, atan2, log, log10 is called with
	argument out of range.
	Add new error case for pow(+0,neg).

	* sysdeps/libm-ieee754/s_fpclassifyf.c: Correct recognition of
	NaN and +-inf.
	* sysdeps/libm-ieee754/s_fpclassifyl.c: Mask out explicit leading
	digit in stupid 80 bit formats.

	* sysdeps/libm-ieee754/s_isinf.c: Rewrite to return -1 for -inf.
	* sysdeps/libm-ieee754/s_isinff.c: Likewise.
	* sysdeps/libm-ieee754/s_isinfl.c: Likewise.

	* sysdeps/libm-ieee754/s_scalbnl.c (huge, tiny): Adapt values for
	long double type.

	* sysdeps/libm-ieee754/w_atan2.c: Do not raise exception expect when
	in SVID mode.
	* sysdeps/libm-ieee754/w_atan2f.c: Likewise.
	* sysdeps/libm-ieee754/w_atan2l.c: Likewise.

	* sysdeps/libm-ieee754/w_pow.c: Distinguish error cases for x is +0
	or -0.

	* sysdeps/posix/isfdtype.c: Add cast to prevent warning.

	* sysdeps/stub/fcntlbits.h: Update copyright.
	* sysdeps/unix/bsd/fcntlbits.h: Likewise.
	* sysdeps/unix/bsd/bsd4.4/fcntlbits.h: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/fcntlbits.h: Likewise.
	* sysdeps/unix/bsd/ultrix4/fcntlbits.h: Likewise.
	* sysdeps/unix/common/fcntlbits.h: Likewise.
	* sysdeps/unix/sysv/fcntlbits.h: Likewise.  Define O_FSYNC as alias
	of O_SYNC.  Add BSD compatibility macros FAPPEND, FFSYNC, FNONBLOCK,
	and FNDELAY.
	* sysdeps/unix/sysv/irix4/fcntlbits.h: Likewise.

	* sysdeps/unix/readdir_r.c: Don't copy whole `struct dirent' record,
	only reclen bytes.

	* sysdeps/unix/sysv/linux/fcntlbits.h [__USE_GNU]: Add O_READ, O_WRITE
	and O_NORW.
	* sysdeps/unix/sysv/linux/alpha/fcntlbits.h: Likewise.

	* sysdeps/unix/sysv/linux/init-first.h: Add copyright.

	* sysdeps/unix/sysv/linux/fxstat.c: New file.  Rewrite kernel-level
	struct stat to user-level form.
	* sysdeps/unix/sysv/linux/lxstat: New file.
	* sysdeps/unix/sysv/linux/xstat: New file.
	* sysdeps/unix/sysv/linux/kernel_stat.h: Define struct stat used in
	kernel.
	* sysdeps/unix/sysv/linux/statbuf.h (struct stat): Change definition
	to use prescribed types for elements.
	(_STAT_VER): Change to value 3.
	* sysdeps/unix/sysv/linux/alph/statbuf.h: Likewise.
	* sysdeps/unix/sysv/linux/Dist: Add kernel_stat.h.
	* sysdeps/unix/sysv/linux/alpha/Dist: Likewise.

	* time/Makefile: Correct dependencies for test-tz.

1997-03-16 14:59  Philip Blundell  <phil@london.uk.eu.org>

	* resolv/netdb.h: Add prototypes for gai_strerror and getnameinfo
	(needed for IPv6 basic sockets API).

1997-03-16 15:02  a sun  <asun@zoology.washington.edu>

	* sysdeps/unix/sysv/linux/net/if_ppp.h: Don't use incompatible
	kernel header.
	* sysdeps/unix/sysv/linux/net/ppp_defs.h: Likewise.

1997-03-14 17:15  Ulrich Drepper  <drepper@cygnus.com>

	* db/hash/hash_bigkey.c (__big_delete): Don't call __free_ovflpage
	without testing for last_bfp to be NULL.
	Reported by fabsoft@fabserver1.zarm.uni-bremen.de.

1997-03-13 11:42  Jim Meyering  <meyering@asic.sc.ti.com>

	* time/mktime.c (TIME_T_MIN): Work around a bug in Cray C 5.0.3.0.

1997-03-14 04:00  Kurt Garloff  <garloff@kg1.ping.de>

	* sysdeps/unix/sysv/linux/fcntlbits.h (O_FSYNC): Make alias for O_SYNC.
	(FASYNC): Move to __USE_BSD section.  Create new macro O_ASYNC.

1997-03-14 02:50  Ulrich Drepper  <drepper@cygnus.com>

	* nis/nss_nis/nis-hosts.c (_nss_nis_gethostbyname2_r): New
	functions.  Compare result for correct address type.
	(_nss_nis_gethostbyname_r): Use _nss_nis_gethostbyname2_r.
	Reported by Mirko Streckenbach <mirko@marian.hil.de>.

1997-02-17 01:40  Zlatko Calusic  <zcalusic@srce.hr>

	* time/strptime.c (recursive): Return rp to caller.
	(strptime_internal): First check for long names, then abbreviated
	(month & weekday).

1997-03-10 19:44  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makeconfig: Remove useless definitions of ASFLAGS-%.
	* config.make.in (ASFLAGS-.so): Remove.
	* configure.in: Don't substitute ASFLAGS_SO.
	* sysdeps/sparc/configure.in: Remove file.
	* sysdeps/sparc/Makefile (ASFLAGS-.so): Define.

1997-03-11 17:00  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* time/strptime.c (strptime_internal) [case 'Y']: Always subtract
	1900 from year, regardless of century.

1997-03-12 05:43  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/strtod.c (_tens_in_limb) [BITS_PER_MP_LIMB > 32]: Make
	all numbers unsigned to make buggy gccs happy.
	Patch by Bryan W. Headley <bheadley@interaccess.com>.

	* sysdeps/unix/sysv/linux/netinet/ip.h: Add backward-compatibility
	definitions.  Patch by a sun <asun@zoology.washington.edu>.
	Pretty print header.

	* Makerules (build-shlib): Also create symlink if library is versioned.
	based on a patch by H.J. Lu <hjl@gnu.ai.mit.edu>.
	Remove special rule to libc.so symlink.

1997-03-11 20:16  Andreas Jaeger  <aj@arthur.pfalz.de>

	* manual/math.texi (Domain and Range Errors): Change descriptions
	according to recent changes for ISO C 9X.

1997-03-11 22:39  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/k_standard.c (__kernel_standard): Correct
	return values for acos, asin, and atan2.
	Reported by Andreas Jaeger <aj@arthur.pfalz.de>.

1997-03-10 18:16 Thorsten Kukuk  <kukuk@vt.uni-paderborn.de>

	* ypclnt.c (__yp_bind): Fix possible buffer overflow.

1997-03-10 18:06  Bernd Schmidt  <crux@Pool.Informatik.RWTH-Aachen.DE>

	* dirent/alphasort.c (alphasort): Interpret arguments as pointers
	to pointers to directory entries so that alphasort really can be
	used as argument for scandir.

1997-03-09 23:33  Andreas Jaeger  <aj@arthur.pfalz.de>

	* string/strdup.c: Declare memcpy if !(_LIBC || STDC_HEADERS)
	instead of strcpy.

1997-03-10 03:34  Ulrich Drepper  <drepper@cygnus.com>

	* catgets/catgets.c (catopen): Always add NLSPATH to search path for
	catalogs, not only if the envvar NLSPATH is not available.
	Reported by Andries.Brouwer@cwi.nl.

1997-03-10 02:46  Ulrich Drepper  <drepper@cygnus.com>

	* Makeconfig (localtime-file): Don't define using installation
	directory.
	(inst_localtime-file): New variable.
	* time/Makefile (installed-localtime-file): Use inst_localtime-file.
	Reported by Edward Seidl <seidl@janed.com>.

1997-03-10 02:31  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* time/Makefile: Add source files to dependencies for test data.

1997-03-09 22:53  Thorsten Kukuk  <kukuk@weber.uni-paderborn.de>

	* nis/nss_nis/nis-ethers.c: Don't ignore return value of yp_all.
	* nis/nss_nis/nis-proto.c: Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.
	* nis/nss_nis/nis-service.c: Likewise.

1997-03-08 14:37  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* sysdeps/sparc/dl-machine.h (elf_machine_rela): Upgrade to
	versioning;  Added missing R_SPARC_WDISP30 handling.
	(RTLD_START): Implement it.

	* sysdeps/unix/sysv/linux/sparc/brk.c: Fix.

	* sysdeps/unix/sysv/linux/sparc/start.c: Startup code for
	Linux/SPARC.

1997-03-02 18:06  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* sysdeps/sparc/dl-machine.h (RTLD_START): Make arg as expected by
	the dynamic linker instead of having a new conditional define.
	Thanks to Richard Henderson for pointing this out.
	* elf/rtld.c: Remove usage of ELF_ADJUST_ARG.

1997-03-20 20:44  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* sysdeps/mach/hurd/euidaccess.c: Define as __euidaccess and make
	euidaccess weak alias.

1997-03-07 10:30  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* stdio-common/printf_fphex.c (MIN): New macro.

	* sysdeps/generic/netinet/in.h: Include <sys/types.h>.

	* sysdeps/generic/sys/mman.h (msync): Mention third arg.

	* sysdeps/generic/netinet/in.h: Add definitions for IPv6 basic
	API.  (See change by Philip Blundell on Feb 16, 1997.)

1997-03-05 10:40  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* hurd/hurd.h (vpprintf): Include <stdarg.h>.  New declaration.

	* hurd/set-host.c (_hurd_set_host_config): Cast second arg to
	__file_name_split.

	* mach/mach_error.c (mach_error_string_int): Give full prototype.
	* mach/errstring.c (mach_error_string_int): Likewise.
	* mach/error_compat.c (__mach_error_map_compat): Likewise.
	* hurd/vpprintf.c (pwrite, vpprintf): Likewise.
	* stdio/vasprintf.c (vasprintf): Likewise.

	* mach/mach/mach_traps.h: Include <mach/kern_return.h>.

	* mach/spin-solid.c: Include <mach/mach_traps.h>.
	* mach/spin-solid.c (__spin_lock_solid): Provide arg to
	swtch_pri.

	* mach/mach_init.c: Include <mach/mig_support.h>.

	* mach/mach_error.h (mach_error_string, mach_error,
	mach_error_type): Always provide prototypes.

	* mach/mach/error.h (mach_error_fn_t): Comment out declaration; it
	appears to be entirely unused dead code.

	* stdio/stdio.h (freopen): Fix spelling error.

1997-03-02 13:38  Miles Bader  <miles@gnu.ai.mit.edu>

	* string/argz.h (__need_error_t): New macro, before including <errno.h>
	[!__const] (__const): New macro.
	[!__error_t_defined] (error_t): New typedef.

	* sysdeps/generic/socketbits.h: Add PF_FILE as synonym for PF_LOCAL
	* sysdeps/unix/sysv/linux/socketbits.h: Likewise.

12 files changed, 184 insertions, 44 deletions

diff --git a/sysdeps/libm-ieee754/e_atan2l.c b/sysdeps/libm-ieee754/e_atan2l.c
new file mode 100644
index 0000000..6b76f96
--- /dev/null
+++ b/sysdeps/libm-ieee754/e_atan2l.c
@@ -0,0 +1,136 @@
+/* e_atan2l.c -- long double version of e_atan2.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/* __ieee754_atan2l(y,x)
+ * Method :
+ *	1. Reduce y to positive by atan2(y,x)=-atan2(-y,x).
+ *	2. Reduce x to positive by (if x and y are unexceptional):
+ *		ARG (x+iy) = arctan(y/x)   	   ... if x > 0,
+ *		ARG (x+iy) = pi - arctan[y/(-x)]   ... if x < 0,
+ *
+ * Special cases:
+ *
+ *	ATAN2((anything), NaN ) is NaN;
+ *	ATAN2(NAN , (anything) ) is NaN;
+ *	ATAN2(+-0, +(anything but NaN)) is +-0  ;
+ *	ATAN2(+-0, -(anything but NaN)) is +-pi ;
+ *	ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2;
+ *	ATAN2(+-(anything but INF and NaN), +INF) is +-0 ;
+ *	ATAN2(+-(anything but INF and NaN), -INF) is +-pi;
+ *	ATAN2(+-INF,+INF ) is +-pi/4 ;
+ *	ATAN2(+-INF,-INF ) is +-3pi/4;
+ *	ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2;
+ *
+ * Constants:
+ * The hexadecimal values are the intended ones for the following
+ * constants. The decimal values may be used, provided that the
+ * compiler will convert from decimal to binary accurately enough
+ * to produce the hexadecimal values shown.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double
+#else
+static long double
+#endif
+tiny  = 1.0e-4900L,
+zero  = 0.0,
+pi_o_4  = 7.85398163397448309628202E-01L, /* 0x3FFE, 0xC90FDAA2, 0x2168C235 */
+pi_o_2  = 1.5707963267948966192564E+00L,  /* 0x3FFF, 0xC90FDAA2, 0x2168C235 */
+pi      = 3.14159265358979323851281E+00L, /* 0x4000, 0xC90FDAA2, 0x2168C235 */
+pi_lo   = -5.01655761266833202345176e-20L;/* 0xBFBE, 0xECE675D1, 0xFC8F8CBB */
+
+#ifdef __STDC__
+	long double __ieee754_atan2l(long double y, long double x)
+#else
+	long double __ieee754_atan2l(y,x)
+	long double  y,x;
+#endif
+{
+	long double z;
+	int32_t k,m,hx,hy,ix,iy;
+	u_int32_t sx,sy,lx,ly;
+
+	EXTRACT_LDOUBLE_WORDS(sx,hx,lx,x);
+	ix = sx&0x7fff;
+	lx |= hx ^ 0x80000000;
+	EXTRACT_LDOUBLE_WORDS(sy,hy,ly,y);
+	iy = sy&0x7fff;
+	ly |= hy ^ 0x80000000;
+	if(((2*ix|((lx|-lx)>>31))>0xfffe)||
+	   ((2*iy|((ly|-ly)>>31))>0xfffe))	/* x or y is NaN */
+	   return x+y;
+	if((sx-0x3fff|lx)==0) return __atanl(y);   /* x=1.0 */
+	m = ((sy>>15)&1)|((sx>>14)&2);	/* 2*sign(x)+sign(y) */
+
+    /* when y = 0 */
+	if((iy|ly)==0) {
+	    switch(m) {
+		case 0:
+		case 1: return y; 	/* atan(+-0,+anything)=+-0 */
+		case 2: return  pi+tiny;/* atan(+0,-anything) = pi */
+		case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */
+	    }
+	}
+    /* when x = 0 */
+	if((ix|lx)==0) return (sy>=0x8000)?  -pi_o_2-tiny: pi_o_2+tiny;
+
+    /* when x is INF */
+	if(ix==0x7fff) {
+	    if(iy==0x7fff) {
+		switch(m) {
+		    case 0: return  pi_o_4+tiny;/* atan(+INF,+INF) */
+		    case 1: return -pi_o_4-tiny;/* atan(-INF,+INF) */
+		    case 2: return  3.0*pi_o_4+tiny;/*atan(+INF,-INF)*/
+		    case 3: return -3.0*pi_o_4-tiny;/*atan(-INF,-INF)*/
+		}
+	    } else {
+		switch(m) {
+		    case 0: return  zero  ;	/* atan(+...,+INF) */
+		    case 1: return -zero  ;	/* atan(-...,+INF) */
+		    case 2: return  pi+tiny  ;	/* atan(+...,-INF) */
+		    case 3: return -pi-tiny  ;	/* atan(-...,-INF) */
+		}
+	    }
+	}
+    /* when y is INF */
+	if(iy==0x7fff) return (hy>=0x8000)? -pi_o_2-tiny: pi_o_2+tiny;
+
+    /* compute y/x */
+	k = sy-sx;
+	if(k > 70) z=pi_o_2+0.5*pi_lo; 	/* |y/x| >  2**70 */
+	else if(sx>=0x8000&&k<-70) z=0.0; 	/* |y|/x < -2**70 */
+	else z=__atanl(fabsl(y/x));	/* safe to do y/x */
+	switch (m) {
+	    case 0: return       z  ;	/* atan(+,+) */
+	    case 1: {
+	    	      u_int32_t sz;
+		      GET_LDOUBLE_EXP(sz,z);
+		      SET_LDOUBLE_EXP(z,sy ^ 0x8000);
+		    }
+		    return       z  ;	/* atan(-,+) */
+	    case 2: return  pi-(z-pi_lo);/* atan(+,-) */
+	    default: /* case 3 */
+	    	    return  (z-pi_lo)-pi;/* atan(-,-) */
+	}
+}
diff --git a/sysdeps/libm-ieee754/s_fpclassifyl.c b/sysdeps/libm-ieee754/s_fpclassifyl.c
index ef37e6f..d7a0e94 100644
--- a/sysdeps/libm-ieee754/s_fpclassifyl.c
+++ b/sysdeps/libm-ieee754/s_fpclassifyl.c
@@ -30,6 +30,7 @@ __fpclassifyl (long double x)
   int retval = FP_NORMAL;
 
   GET_LDOUBLE_WORDS (ex, hx, lx, x);
+  hx &= 0x7fffffff;
   hx |= lx;
   ex &= 0x7fff;
   if ((ex | hx) == 0)
diff --git a/sysdeps/libm-ieee754/s_isinf.c b/sysdeps/libm-ieee754/s_isinf.c
index b35fc1c..d3c2cb5 100644
--- a/sysdeps/libm-ieee754/s_isinf.c
+++ b/sysdeps/libm-ieee754/s_isinf.c
@@ -1,5 +1,6 @@
 /*
  * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Changed to return -1 for -Inf by Ulrich Drepper <drepper@cygnus.com>.
  * Public domain.
  */
 
@@ -8,7 +9,7 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $";
 #endif
 
 /*
- * isinf(x) returns 1 is x is inf, else 0;
+ * isinf(x) returns 1 is x is inf, -1 if x is -inf, else 0;
  * no branching!
  */
 
@@ -22,12 +23,12 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $";
 	double x;
 #endif
 {
-	int32_t hx,lx;
+	u_int32_t hx;
+	int32_t lx;
 	EXTRACT_WORDS(hx,lx,x);
-	hx &= 0x7fffffff;
-	hx ^= 0x7ff00000;
-	hx |= lx;
-	return (hx == 0);
+	lx |= (hx & 0x7fffffff) ^ 0x7ff00000;
+	lx |= -lx;
+	return ~(lx >> 31) & (1 - ((hx >> 30) & 2));
 }
 weak_alias (__isinf, isinf)
 #ifdef NO_LONG_DOUBLE
diff --git a/sysdeps/libm-ieee754/s_isinff.c b/sysdeps/libm-ieee754/s_isinff.c
index 1d81f15..9acc0df 100644
--- a/sysdeps/libm-ieee754/s_isinff.c
+++ b/sysdeps/libm-ieee754/s_isinff.c
@@ -8,7 +8,7 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";
 #endif
 
 /*
- * isinff(x) returns 1 is x is inf, else 0;
+ * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;
  * no branching!
  */
 
@@ -22,10 +22,11 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $";
 	float x;
 #endif
 {
-	int32_t ix;
+	int32_t ix,t;
 	GET_FLOAT_WORD(ix,x);
-	ix &= 0x7fffffff;
-	ix ^= 0x7f800000;
-	return (ix == 0);
+	t = ix & 0x7fffffff;
+	t ^= 0x7f800000;
+	t |= -t;
+	return ~(t >> 31) & (1 - ((ix & 0x80000000) >> 30));
 }
 weak_alias (__isinff, isinff)
diff --git a/sysdeps/libm-ieee754/s_isinfl.c b/sysdeps/libm-ieee754/s_isinfl.c
index 22dff75..b499821 100644
--- a/sysdeps/libm-ieee754/s_isinfl.c
+++ b/sysdeps/libm-ieee754/s_isinfl.c
@@ -9,7 +9,7 @@ static char rcsid[] = "$NetBSD: $";
 #endif
 
 /*
- * isinfl(x) returns 1 is x is inf, else 0;
+ * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0;
  * no branching!
  */
 
@@ -25,9 +25,9 @@ static char rcsid[] = "$NetBSD: $";
 {
 	int32_t se,hx,lx;
 	GET_LDOUBLE_WORDS(se,hx,lx,x);
-	se &= 0x7fff;
-	se ^= 0x7fff;
-	se |= hx | lx;
-	return (se == 0);
+	hx |= lx | ((se & 0x7fff) ^ 0x7fff);
+	hx |= -hx;
+	se &= 0x8000;
+	return ~(hx >> 31) & (1 - (se >> 14));
 }
 weak_alias (__isinfl, isinfl)
diff --git a/sysdeps/libm-ieee754/s_scalbnl.c b/sysdeps/libm-ieee754/s_scalbnl.c
index d00eb88..6825e9c 100644
--- a/sysdeps/libm-ieee754/s_scalbnl.c
+++ b/sysdeps/libm-ieee754/s_scalbnl.c
@@ -33,10 +33,10 @@ static const long double
 #else
 static long double
 #endif
-two54   =  1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
-twom54  =  5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
-huge   = 1.0e+300,
-tiny   = 1.0e-300;
+two54   =  1.80143985094819840000e+16, /* 0x4035, 0x00000000, 0x00000000 */
+twom54  =  5.55111512312578270212e-17, /* 0x3FC9, 0x00000000, 0x00000000 */
+huge   = 1.0e+4900L,
+tiny   = 1.0e-4900L;
 
 #ifdef __STDC__
 	long double __scalbnl (long double x, int n)
diff --git a/sysdeps/libm-ieee754/w_atan2.c b/sysdeps/libm-ieee754/w_atan2.c
index ec29d55..3f6032f 100644
--- a/sysdeps/libm-ieee754/w_atan2.c
+++ b/sysdeps/libm-ieee754/w_atan2.c
@@ -34,11 +34,10 @@ static char rcsid[] = "$NetBSD: w_atan2.c,v 1.6 1995/05/10 20:48:39 jtc Exp $";
 #else
 	double z;
 	z = __ieee754_atan2(y,x);
-	if(_LIB_VERSION == _IEEE_||__isnan(x)||__isnan(y)) return z;
+	if(_LIB_VERSION != _SVID_||__isnan(x)||__isnan(y)) return z;
 	if(x==0.0&&y==0.0) {
-	        return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */
-	} else
-	    return z;
+	  return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */
+	return z;
 #endif
 }
 weak_alias (__atan2, atan2)
diff --git a/sysdeps/libm-ieee754/w_atan2f.c b/sysdeps/libm-ieee754/w_atan2f.c
index 4d67638..00b2ce7 100644
--- a/sysdeps/libm-ieee754/w_atan2f.c
+++ b/sysdeps/libm-ieee754/w_atan2f.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -17,7 +17,7 @@
 static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
 #endif
 
-/* 
+/*
  * wrapper atan2f(y,x)
  */
 
@@ -38,11 +38,7 @@ static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $";
 	float z;
 	z = __ieee754_atan2f(y,x);
 	if(_LIB_VERSION == _IEEE_||__isnanf(x)||__isnanf(y)) return z;
-	if(x==(float)0.0&&y==(float)0.0) {
-		/* atan2f(+-0,+-0) */
-	        return (float)__kernel_standard((double)y,(double)x,103);
-	} else
-	    return z;
+	return z;
 #endif
 }
 weak_alias (__atan2f, atan2f)
diff --git a/sysdeps/libm-ieee754/w_atan2l.c b/sysdeps/libm-ieee754/w_atan2l.c
index 9e6e56b..437a04c 100644
--- a/sysdeps/libm-ieee754/w_atan2l.c
+++ b/sysdeps/libm-ieee754/w_atan2l.c
@@ -39,10 +39,7 @@ static char rcsid[] = "$NetBSD: $";
 	long double z;
 	z = __ieee754_atan2l(y,x);
 	if(_LIB_VERSION == _IEEE_||__isnanl(x)||__isnanl(y)) return z;
-	if(x==0.0&&y==0.0) {
-	        return __kernel_standard(y,x,203); /* atan2l(+-0,+-0) */
-	} else
-	    return z;
+	return z;
 #endif
 }
 weak_alias (__atan2l, atan2l)
diff --git a/sysdeps/libm-ieee754/w_pow.c b/sysdeps/libm-ieee754/w_pow.c
index ea19e1f..1711d71 100644
--- a/sysdeps/libm-ieee754/w_pow.c
+++ b/sysdeps/libm-ieee754/w_pow.c
@@ -43,7 +43,10 @@
 	    if(y==0.0)
 	        return __kernel_standard(x,y,20); /* pow(0.0,0.0) */
 	    if(__finite(y)&&y<0.0)
-	        return __kernel_standard(x,y,23); /* pow(0.0,negative) */
+	      if (signbit (x) && signbit (z))
+	        return __kernel_standard(x,y,23); /* pow(-0.0,negative) */
+	      else
+	        return __kernel_standard(x,y,43); /* pow(+0.0,negative) */
 	    return z;
 	}
 	if(!__finite(z)) {
diff --git a/sysdeps/libm-ieee754/w_powf.c b/sysdeps/libm-ieee754/w_powf.c
index 3f9d5c8..0b20822 100644
--- a/sysdeps/libm-ieee754/w_powf.c
+++ b/sysdeps/libm-ieee754/w_powf.c
@@ -8,7 +8,7 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
@@ -17,7 +17,7 @@
 static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
 #endif
 
-/* 
+/*
  * wrapper powf(x,y) return x**y
  */
 
@@ -39,19 +39,22 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
 	z=__ieee754_powf(x,y);
 	if(_LIB_VERSION == _IEEE_|| __isnanf(y)) return z;
 	if(__isnanf(x)) {
-	    if(y==(float)0.0) 
+	    if(y==(float)0.0)
 	        /* powf(NaN,0.0) */
 	        return (float)__kernel_standard((double)x,(double)y,142);
-	    else 
+	    else
 		return z;
 	}
-	if(x==(float)0.0){ 
+	if(x==(float)0.0){
 	    if(y==(float)0.0)
 	        /* powf(0.0,0.0) */
 	        return (float)__kernel_standard((double)x,(double)y,120);
 	    if(__finitef(y)&&y<(float)0.0)
+	      if (signbit (x) && signbit (z))
 	        /* powf(0.0,negative) */
 	        return (float)__kernel_standard((double)x,(double)y,123);
+	      else
+	        return (float)__kernel_standard((double)x,(double)y,143);
 	    return z;
 	}
 	if(!__finitef(z)) {
@@ -59,11 +62,11 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $";
 	        if(__isnanf(z))
 		    /* powf neg**non-int */
 	            return (float)__kernel_standard((double)x,(double)y,124);
-	        else 
+	        else
 		    /* powf overflow */
 	            return (float)__kernel_standard((double)x,(double)y,121);
 	    }
-	} 
+	}
 	if(z==(float)0.0&&__finitef(x)&&__finitef(y))
 	    /* powf underflow */
 	    return (float)__kernel_standard((double)x,(double)y,122);
diff --git a/sysdeps/libm-ieee754/w_powl.c b/sysdeps/libm-ieee754/w_powl.c
index 019664e..aea572d 100644
--- a/sysdeps/libm-ieee754/w_powl.c
+++ b/sysdeps/libm-ieee754/w_powl.c
@@ -45,7 +45,10 @@
 	    if(y==0.0)
 	        return __kernel_standard(x,y,220); /* pow(0.0,0.0) */
 	    if(__finite(y)&&y<0.0)
-	        return __kernel_standard(x,y,223); /* pow(0.0,negative) */
+	      if (signbit (x) && signbit (z))
+	        return __kernel_standard(x,y,223); /* pow(-0.0,negative) */
+	      else
+	        return __kernel_standard(x,y,243); /* pow(+0.0,negative) */
 	    return z;
 	}
 	if(!__finitel(z)) {