From fb1ca2aa3e58cad474c918f34e5e5eed70f5d94a Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 6 Dec 2017 23:06:12 +0000
Subject: Support defining strtof32, wcstof32 aliases.

This patch adds support for defining strtof32, wcstof32, strtof32_l
and wcstof32_l functions as aliases of the corresponding float
functions when _Float32 support is enabled.

Tested for x86_64; also tested with build-many-glibcs.py in
conjunction with other _Float32 changes.

	* stdlib/strtof.c: Include <bits/floatn.h>
	[__HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32] (strtof32): Define
	and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32] (wcstof32): Define
	and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
	* stdlib/strtof_l.c: Include <bits/floatn.h>
	[__HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32] (strtof32_l): Define
	and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32] (wcstof32_l): Define
	and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
---
 stdlib/strtof.c   | 17 +++++++++++++++++
 stdlib/strtof_l.c | 17 +++++++++++++++++
 2 files changed, 34 insertions(+)

(limited to 'stdlib')

diff --git a/stdlib/strtof.c b/stdlib/strtof.c
index 600512134c..7f47362025 100644
--- a/stdlib/strtof.c
+++ b/stdlib/strtof.c
@@ -20,6 +20,13 @@
 /* The actual implementation for all floating point sizes is in strtod.c.
    These macros tell it to produce the `float' version, `strtof'.  */
 
+#include <bits/floatn.h>
+
+#if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
+# define strtof32 __hide_strtof32
+# define wcstof32 __hide_wcstof32
+#endif
+
 #define	FLOAT		float
 #define	FLT		FLT
 #ifdef USE_WIDE_CHAR
@@ -32,3 +39,13 @@
 
 
 #include "strtod.c"
+
+#if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
+# undef strtof32
+# undef wcstof32
+# ifdef USE_WIDE_CHAR
+weak_alias (wcstof, wcstof32)
+# else
+weak_alias (strtof, strtof32)
+# endif
+#endif
diff --git a/stdlib/strtof_l.c b/stdlib/strtof_l.c
index 33be42f96d..5735240afa 100644
--- a/stdlib/strtof_l.c
+++ b/stdlib/strtof_l.c
@@ -17,6 +17,13 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <bits/floatn.h>
+
+#if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
+# define strtof32_l __hide_strtof32_l
+# define wcstof32_l __hide_wcstof32_l
+#endif
+
 #include <locale.h>
 
 extern float ____strtof_l_internal (const char *, char **, int, locale_t);
@@ -36,3 +43,13 @@ extern float ____strtof_l_internal (const char *, char **, int, locale_t);
 #define	FLOAT_HUGE_VAL	HUGE_VALF
 
 #include "strtod_l.c"
+
+#if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
+# undef strtof32_l
+# undef wcstof32_l
+# ifdef USE_WIDE_CHAR
+weak_alias (wcstof_l, wcstof32_l)
+# else
+weak_alias (strtof_l, strtof32_l)
+# endif
+#endif
-- 
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