From db9e538477da947df9212b77ac3c2991af750a8f Mon Sep 17 00:00:00 2001
From: Bruno Haible <bruno@clisp.org>
Date: Mon, 10 Oct 2011 17:17:26 +0200
Subject: [PATCH] printf-frexpl: Simplify for platforms where 'long double' ==
 'double'.

* lib/printf-frexpl.c: Include <config.h>.
(printf_frexpl) [HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]: New function.
* lib/printf-frexp.c [!USE_LONG_DOUBLE]: Don't include <config.h> a
second time.
* m4/printf-frexpl.m4 (gl_FUNC_PRINTF_FREXPL): Require
gl_LONG_DOUBLE_VS_DOUBLE.
* modules/printf-frexpl (Depends-on): Add printf-frexp. Update
conditions.
---
 ChangeLog             | 12 ++++++++++++
 lib/printf-frexp.c    |  4 +++-
 lib/printf-frexpl.c   | 23 +++++++++++++++++++++--
 m4/printf-frexpl.m4   |  4 +++-
 modules/printf-frexpl |  7 ++++---
 5 files changed, 43 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 465f6ae0e..b9e401ac4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,17 @@
 2011-10-10  Bruno Haible  <bruno@clisp.org>
 
+	printf-frexpl: Simplify for platforms where 'long double' == 'double'.
+	* lib/printf-frexpl.c: Include <config.h>.
+	(printf_frexpl) [HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]: New function.
+	* lib/printf-frexp.c [!USE_LONG_DOUBLE]: Don't include <config.h> a
+	second time.
+	* m4/printf-frexpl.m4 (gl_FUNC_PRINTF_FREXPL): Require
+	gl_LONG_DOUBLE_VS_DOUBLE.
+	* modules/printf-frexpl (Depends-on): Add printf-frexp. Update
+	conditions.
+
+2011-10-10  Bruno Haible  <bruno@clisp.org>
+
 	frexpl: Simplify for platforms where 'long double' == 'double'.
 	* lib/frexpl.c: Include <config.h>.
 	(frexpl) [HAVE_SAME_LONG_DOUBLE_AS_DOUBLE]: New function.
diff --git a/lib/printf-frexp.c b/lib/printf-frexp.c
index 7f7e0ecde..267081cec 100644
--- a/lib/printf-frexp.c
+++ b/lib/printf-frexp.c
@@ -14,7 +14,9 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#include <config.h>
+#if ! defined USE_LONG_DOUBLE
+# include <config.h>
+#endif
 
 /* Specification.  */
 #ifdef USE_LONG_DOUBLE
diff --git a/lib/printf-frexpl.c b/lib/printf-frexpl.c
index f19f32168..2de6528bc 100644
--- a/lib/printf-frexpl.c
+++ b/lib/printf-frexpl.c
@@ -14,5 +14,24 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#define USE_LONG_DOUBLE
-#include "printf-frexp.c"
+#include <config.h>
+
+#if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+
+/* Specification.  */
+# include "printf-frexpl.h"
+
+# include "printf-frexp.h"
+
+long double
+printf_frexpl (long double x, int *expptr)
+{
+  return printf_frexp (x, expptr);
+}
+
+#else
+
+# define USE_LONG_DOUBLE
+# include "printf-frexp.c"
+
+#endif
diff --git a/m4/printf-frexpl.m4 b/m4/printf-frexpl.m4
index 9b698c9be..e15628aa8 100644
--- a/m4/printf-frexpl.m4
+++ b/m4/printf-frexpl.m4
@@ -1,4 +1,4 @@
-# printf-frexpl.m4 serial 8
+# printf-frexpl.m4 serial 9
 dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -9,6 +9,8 @@ dnl Check how to define printf_frexpl() without linking with libm.
 AC_DEFUN([gl_FUNC_PRINTF_FREXPL],
 [
   AC_REQUIRE([gl_MATH_H_DEFAULTS])
+  AC_REQUIRE([gl_LONG_DOUBLE_VS_DOUBLE])
+
   dnl Subset of gl_FUNC_FREXPL_NO_LIBM.
   gl_CHECK_FREXPL_NO_LIBM
   if test $gl_cv_func_frexpl_no_libm = yes; then
diff --git a/modules/printf-frexpl b/modules/printf-frexpl
index c23550e1b..c506a6266 100644
--- a/modules/printf-frexpl
+++ b/modules/printf-frexpl
@@ -11,9 +11,10 @@ m4/frexpl.m4
 m4/ldexpl.m4
 
 Depends-on:
-float
-math
-fpucw
+printf-frexp    [test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 1]
+float           [test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
+math            [test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
+fpucw           [test $HAVE_SAME_LONG_DOUBLE_AS_DOUBLE = 0]
 
 configure.ac:
 gl_FUNC_PRINTF_FREXPL
-- 
2.11.0