From 02010e79ceb7989686a0c8c40878024e30fdc888 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Mon, 16 Oct 2017 13:22:11 +0000
Subject: Support strtof128 etc. aliases.

This patch adds support for building strtof128, wcstof128, strtof128_l
and wcstof128_l as aliases, in the case of __HAVE_FLOAT128 &&
!__HAVE_DISTINCT_FLOAT128.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by this patch.  Also tested together with
changes to enable float128 aliases.

	* stdlib/strtold.c: Include <bits/floatn.h>
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (strtof128): Define
	and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128): Define
	and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
	* sysdeps/ieee754/ldbl-128/strtold_l.c [__HAVE_FLOAT128 &&
	!__HAVE_DISTINCT_FLOAT128] (strtof128_l): Define and later
	undefine as macro.  Define as weak alias if [!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
	* sysdeps/ieee754/ldbl-64-128/strtold_l.c: Include
	<bits/floatn.h>.
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (strtof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[!USE_WIDE_CHAR].
	[__HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128] (wcstof128_l):
	Define and later undefine as macro.  Define as weak alias if
	[USE_WIDE_CHAR].
---
 stdlib/strtold.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'stdlib')

diff --git a/stdlib/strtold.c b/stdlib/strtold.c
index e4ace02dd0..4e683b44b6 100644
--- a/stdlib/strtold.c
+++ b/stdlib/strtold.c
@@ -20,8 +20,14 @@
 /* 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>
 #include <bits/long-double.h>
 
+#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
+# define strtof128 __hide_strtof128
+# define wcstof128 __hide_wcstof128
+#endif
+
 #ifdef __LONG_DOUBLE_MATH_OPTIONAL
 # include <wchar.h>
 # define NEW(x) NEW1(x)
@@ -62,3 +68,13 @@ long_double_symbol (libc, ____new_strtold_internal, __strtold_internal);
 libc_hidden_ver (____new_strtold_internal, __strtold_internal)
 # endif
 #endif
+
+#if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
+# undef strtof128
+# undef wcstof128
+# ifdef USE_WIDE_CHAR
+weak_alias (NEW (wcstold), wcstof128)
+# else
+weak_alias (NEW (strtold), strtof128)
+# endif
+#endif
-- 
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