Remove redundant ldbl-64-128 files.

Various source files in ldbl-64-128 are redundant, because they wrap
files that no longer provide public symbols that need special
versioning (those symbols having moved to separate errno-setting
wrappers), or, in the case of w_scalblnl.c, because the type-generic
template now does everything required (it deals with symbol versioning
for use in libm, and this file is never built for libc anyway - the
compat scalbln* symbols in libc, as opposed to scalbn*, are only for
i386 and m68k and are aliases to the corresponding scalbn* symbols).
This patch removes those redundant files.

Tested with build-many-glibcs.py (for all ldbl-64-128 configurations)
that installed stripped shared libraries are unchanged by this patch.

	* sysdeps/ieee754/ldbl-64-128/e_ilogbl.c: Remove file.
	* sysdeps/ieee754/ldbl-64-128/s_log1pl.c: Likewise.
	* sysdeps/ieee754/ldbl-64-128/s_scalblnl.c: Likewise.
	* sysdeps/ieee754/ldbl-64-128/s_scalbnl.c: Likewise.
	* sysdeps/ieee754/ldbl-64-128/w_scalblnl.c: Likewise.

6 files changed, 8 insertions, 38 deletions

diff --git a/ChangeLog b/ChangeLog
index bb81b9cf6e..9ad7eae069 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2017-10-06  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/ieee754/ldbl-64-128/e_ilogbl.c: Remove file.
+	* sysdeps/ieee754/ldbl-64-128/s_log1pl.c: Likewise.
+	* sysdeps/ieee754/ldbl-64-128/s_scalblnl.c: Likewise.
+	* sysdeps/ieee754/ldbl-64-128/s_scalbnl.c: Likewise.
+	* sysdeps/ieee754/ldbl-64-128/w_scalblnl.c: Likewise.
+
 2017-10-05  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/arm/libm-test-ulps: Update.
diff --git a/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c b/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c
deleted file mode 100644
index 75a38e13ce..0000000000
--- a/sysdeps/ieee754/ldbl-64-128/e_ilogbl.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/ieee754/ldbl-128/e_ilogbl.c>
diff --git a/sysdeps/ieee754/ldbl-64-128/s_log1pl.c b/sysdeps/ieee754/ldbl-64-128/s_log1pl.c
deleted file mode 100644
index 11d56bfe9f..0000000000
--- a/sysdeps/ieee754/ldbl-64-128/s_log1pl.c
+++ /dev/null
@@ -1,2 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <sysdeps/ieee754/ldbl-128/s_log1pl.c>
diff --git a/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c b/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c
deleted file mode 100644
index 97181d29b9..0000000000
--- a/sysdeps/ieee754/ldbl-64-128/s_scalblnl.c
+++ /dev/null
@@ -1,4 +0,0 @@
-#include <math_ldbl_opt.h>
-#undef weak_alias
-#define weak_alias(n,a)
-#include <sysdeps/ieee754/ldbl-128/s_scalblnl.c>
diff --git a/sysdeps/ieee754/ldbl-64-128/s_scalbnl.c b/sysdeps/ieee754/ldbl-64-128/s_scalbnl.c
deleted file mode 100644
index 15af1b2849..0000000000
--- a/sysdeps/ieee754/ldbl-64-128/s_scalbnl.c
+++ /dev/null
@@ -1,4 +0,0 @@
-#include <math_ldbl_opt.h>
-#undef weak_alias
-#define weak_alias(n,a)
-#include <sysdeps/ieee754/ldbl-128/s_scalbnl.c>
diff --git a/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c b/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c
deleted file mode 100644
index fef2507cd5..0000000000
--- a/sysdeps/ieee754/ldbl-64-128/w_scalblnl.c
+++ /dev/null
@@ -1,26 +0,0 @@
-/* Wrapper for __scalblnl handles setting errno.
-   Copyright (C) 2014-2017 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 Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#define declare_mgen_alias(from, to)
-#include <math-type-macros-ldouble.h>
-#include <w_scalbln_template.c>
-#if IS_IN (libm)
-long_double_symbol (libm, __w_scalblnl, scalblnl);
-#else
-long_double_symbol (libc, __w_scalblnl, scalblnl);
-#endif