update from main archive 960829 cvs/libc-960830

Fri Aug 30 01:26:44 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/i386/Dist: Add close.S.
	* sysdeps/unix/sysv/linux/m68k/Dist: Likewise.
	* sysdeps/unix/sysv/linux/alpha/Dist: Likewise.

	* version.c: Add comment about where to report bugs to.
	* catgets/gencat.c (usage): Likewise.
	* db/makedb.c (usage): Likewise.
	* locale/programs/locale.c (usage): Likewise.
	* locale/programs/localedef.c (usage): Likewise.

	* manual/socket.texi: A little bit better wording.

Thu Aug 29 18:03:06 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makerules: Make sure directory exists before generating stamp file.
	(BUILD_CFLAGS): Always refer to using $(..).
	* manual/Makefile: Make sure directory exists before generating
 	stamp file.
	(make-target-directory): Add macro definition.
	* sysdeps/generic/Makefile: Make sure directory exists before
 	generating stamp file.

	* Makefile (distribute): Add autolock.sh.  Reported by Fila Kolodny.

Tue Aug 27 10:06:22 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	When compiling in separate directory put objects into
	subdirectories matching the source layout.
	* Makeconfig (objpfx) [ifdef objdir]: Append $(subdir).
	When looking for configparms try in $(common-objpfx).
	Use $(common-objpfx)SUBDIR to find objects from other subdirectory
	builds.
	* Makerules: Add $(objpfx) to vpath list.
	(make-dummy-dep): Use $(common-objpfx) to avoid creating dummy.d
	more than once.  All uses in dependency lists changed.
	(+make-deps): Make target directory.
	(sed-remove-objpfx): Substitute $(common-objpfx).
	(do-ar, build-extra-lib, $(common-objpfx)stub-$(subdir)): Use
	$(objpfx) instead of $(objdir) for cd command.
	(O%-lib): Always find libc relative to $(..).
	(subdir-stamps): Collect stamp files from subdirs.
	(common-mostlyclean): Remove stub file in $(common-objpfx).
	* MakeTAGS ($P/siglist.pot): Find siglist.c in stdio-common.
	* Rules (dep-dummy-lib): Use $(common-objpfx) to avoid creating to
	more than once.
	($(objpfx)dummy.c, $(objpfx)empty.c): Change target name to use
	$(common-objfpx).  All uses in dependency lists changed.
	(generated): Prepend $(..) to names.
	* bare/Makefile ($(objpfx)lib$(config-vendor).a): Remove $(objpfx)
	from $@.
	* nss/Makefile ($(objpfx)libnss_dns.so, $(objpfx)libnss_db.so):
	Use $(common-objpfx) instead of $(..) in dependencies.
	* sysdeps/mach/Makefile (mach-objpfx): Unconditionally use
	$(common-objpfx) instead of $(..) and (objpfx).
	* sysdeps/mach/hurd/Makefile (hurd-objpfx): Likewise.
	(rpath-link): Likewise.
	(rpcuserlibs): Likewise.
	* sysdeps/unix/Makefile [$(subdir) = stdio-common]: Check for
	errlist.c in $(objpfx), not $(common-objpfx).
	($(common-objpfx)s-proto.d): Special rule not covered by pattern
	rule.
	* sysdeps/unix/make-syscalls.sh: Make syscall rules depending on
	s-proto.d in $(common-objpfx), not $(objpfx).

Thu Aug 29 17:45:49 1996  Ulrich Drepper  <drepper@cygnus.com>

	* nss/nsswitch.c (nss_dlerror_run): Free returned error
	string.

Thu Aug 29 15:53:33 1996  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/libm-ieee754/e_acoshl.c: New file. `long double'
 	implementation.
	* sysdeps/libm-ieee754/e_atanhl.c: Likewise.
	* sysdeps/libm-ieee754/e_remainderl.c: Likewise.
	* sysdeps/libm-ieee754/e_scalbl.c: Likewise.
	* sysdeps/libm-ieee754/s_asinhl.c: Likewise.
	* sysdeps/libm-ieee754/s_cosl.c: Likewise.
	* sysdeps/libm-ieee754/s_sinl.c: Likewise.
	* sysdeps/libm-ieee754/s_tanhl.c: Likewise.
	* sysdeps/libm-ieee754/s_tanl.c: Likewise.

	* stdio-common/printf_fp.c (__printf_fp): Use default value '.' if

1 files changed, 91 insertions, 0 deletions

diff --git a/sysdeps/libm-ieee754/s_tanhl.c b/sysdeps/libm-ieee754/s_tanhl.c
new file mode 100644
index 0000000000..984f67108b
--- /dev/null
+++ b/sysdeps/libm-ieee754/s_tanhl.c
@@ -0,0 +1,91 @@
+/* s_tanhl.c -- long double version of s_tanh.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
+
+/* tanhl(x)
+ * Return the Hyperbolic Tangent of x
+ *
+ * Method :
+ *				        x    -x
+ *				       e  - e
+ *	0. tanhl(x) is defined to be -----------
+ *				        x    -x
+ *				       e  + e
+ *	1. reduce x to non-negative by tanhl(-x) = -tanhl(x).
+ *	2.  0      <= x <= 2**-55 : tanhl(x) := x*(one+x)
+ *					         -t
+ *	    2**-55 <  x <=  1     : tanhl(x) := -----; t = expm1l(-2x)
+ *					        t + 2
+ *						      2
+ *	    1      <= x <=  23.0  : tanhl(x) := 1-  ----- ; t=expm1l(2x)
+ *						    t + 2
+ *	    23.0   <  x <= INF    : tanhl(x) := 1.
+ *
+ * Special cases:
+ *	tanhl(NaN) is NaN;
+ *	only tanhl(0)=0 is exact for finite argument.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const long double one=1.0, two=2.0, tiny = 1.0e-16380L;
+#else
+static long double one=1.0, two=2.0, tiny = 1.0e-16380L;
+#endif
+
+#ifdef __STDC__
+	long double __tanhl(long double x)
+#else
+	long double __tanhl(x)
+	long double x;
+#endif
+{
+	long double t,z;
+	int32_t se,j0,j1,ix;
+
+    /* High word of |x|. */
+	GET_LDOUBLE_WORDS(se,j0,j1,x);
+	ix = se&0x7fff;
+
+    /* x is INF or NaN */
+	if(ix==0x7fff) {
+	    if (se>=0x7fff) return one/x+one;    /* tanhl(+-inf)=+-1 */
+	    else            return one/x-one;    /* tanhl(NaN) = NaN */
+	}
+
+    /* |x| < 23 */
+	if (ix < 0x4003 || (ix == 0x4003 && j0 < 0xb8000000)) {	/* |x|<23 */
+	    if (ix<0x3fc8) 		/* |x|<2**-55 */
+		return x*(one+x);    	/* tanh(small) = small */
+	    if (ix>=0x3fff) {	/* |x|>=1  */
+		t = __expm1l(two*fabsl(x));
+		z = one - two/(t+two);
+	    } else {
+	        t = __expm1l(-two*fabsl(x));
+	        z= -t/(t+two);
+	    }
+    /* |x| > 23, return +-1 */
+	} else {
+	    z = one - tiny;		/* raised inexact flag */
+	}
+	return (se>0x7fff)? z: -z;
+}
+weak_alias (__tanhl, tanhl)