Support defining strfromf64, strfromf32x aliases.

This patch adds support for defining strfromf64 and strfromf32x
aliases of strfromd when the corresponding types are enabled.

Tested for x86_64; also tested with build-many-glibcs.py in
conjunction with other _Float64 / _Float32x changes.

	* stdlib/strfromd.c: Include <bits/floatn.h>.
	[__HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64] (strfromf64): Define
	and later undefine as macro and define as weak alias.
	[__HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X] (strfromf32x):
	Likewise.

diff --git a/ChangeLog b/ChangeLog
index 8ed099d..bcc49a1 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2017-12-05  Joseph Myers  <joseph@codesourcery.com>
 
+       * stdlib/strfromd.c: Include <bits/floatn.h>.
+       [__HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64] (strfromf64): Define
+       and later undefine as macro and define as weak alias.
+       [__HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X] (strfromf32x):
+       Likewise.
+
        * math/test-float32x.h: New file.
        * math/test-float64.h: Likewise.
 

diff --git a/stdlib/strfromd.c b/stdlib/strfromd.c
index 5342059..85c5555 100644 (file)
--- a/stdlib/strfromd.c
+++ b/stdlib/strfromd.c
@@ -16,7 +16,32 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <bits/floatn.h>
+
 #define FLOAT          double
 #define STRFROM                strfromd
 
+#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+# define strfromf64 __hide_strfromf64
+#endif
+#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+# define strfromf32x __hide_strfromf32x
+#endif
+
+#include <stdlib.h>
+
+#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+# undef strfromf64
+#endif
+#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+# undef strfromf32x
+#endif
+
 #include "strfrom-skeleton.c"
+
+#if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+weak_alias (strfromd, strfromf64)
+#endif
+#if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+weak_alias (strfromd, strfromf32x)
+#endif