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-rw-r--r--ChangeLog7
-rw-r--r--sysdeps/generic/libm-alias-float128.h36
-rw-r--r--sysdeps/generic/math-type-macros-float128.h5
3 files changed, 48 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 3f2e355a82..564c7e0745 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2017-09-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/generic/libm-alias-float128.h: New file.
+	* sysdeps/generic/math-type-macros-float128.h: Include
+	<libm-alias-float128.h>.
+	[!declare_mgen_alias] (declare_mgen_alias): Define macro.
+
 2017-09-13  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/generic/libm-alias-ldouble.h: New file.
diff --git a/sysdeps/generic/libm-alias-float128.h b/sysdeps/generic/libm-alias-float128.h
new file mode 100644
index 0000000000..6bb1cb1117
--- /dev/null
+++ b/sysdeps/generic/libm-alias-float128.h
@@ -0,0 +1,36 @@
+/* Define aliases for libm _Float128 functions.
+   Copyright (C) 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/>.  */
+
+#ifndef _LIBM_ALIAS_FLOAT128_H
+#define _LIBM_ALIAS_FLOAT128_H
+
+/* Define aliases for a _Float128 libm function that has internal name
+   FROM ## f128 ## R and public names TO ## suffix ## R for each
+   suffix of a supported floating-point type with the same format as
+   _Float128.  This should only be used for functions where such
+   public names exist for _FloatN types, not for
+   implementation-namespace exported names (where there is one name
+   per format, not per type) or for obsolescent functions not provided
+   for _FloatN types.  */
+#define libm_alias_float128_r(from, to, r)		\
+  weak_alias (from ## f128 ## r, to ## f128 ## r)
+
+/* Likewise, but without the R suffix.  */
+#define libm_alias_float128(from, to) libm_alias_float128_r (from, to, )
+
+#endif
diff --git a/sysdeps/generic/math-type-macros-float128.h b/sysdeps/generic/math-type-macros-float128.h
index 5d734db29f..3e69c17f65 100644
--- a/sysdeps/generic/math-type-macros-float128.h
+++ b/sysdeps/generic/math-type-macros-float128.h
@@ -32,6 +32,11 @@
 
 #define M_MLIT(c) c ## f128
 
+#include <libm-alias-float128.h>
+
+#ifndef declare_mgen_alias
+# define declare_mgen_alias(from, to) libm_alias_float128 (from, to)
+#endif
 
 /* Supply the generic macros.  */
 #include <math-type-macros.h>