Patchwork Support defining strtof64, strtof32x, wcstof64, wcstof32x aliases [committed]

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Submitter Joseph Myers
Date Dec. 5, 2017, 6:32 p.m.
Message ID <alpine.DEB.2.20.1712051832280.14928@digraph.polyomino.org.uk>
Download mbox | patch
Permalink /patch/24745/
State New
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Joseph Myers - Dec. 5, 2017, 6:32 p.m.
This patch adds support for defining strtof64, strtof32x, wcstof64,
wcstof32x and the corresponding _l functions as aliases of the
corresponding double functions when _Float64 and _Float32x support is
enabled.

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

2017-12-05  Joseph Myers  <joseph@codesourcery.com>

	* stdlib/strtod.c: Include <bits/floatn.h>.
	(BUILD_DOUBLE): New macro.
	[BUILD_DOUBLE && __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64]
	(strtof64): Define and later undefine as macro.  Define as weak
	alias if [!USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64]
	(wcstof64): Define and later undefine as macro.  Define as weak
	alias if [USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X]
	(strtof32x): Define and later undefine as macro.  Define as weak
	alias if [!USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X]
	(wcstof32x): Define and later undefine as macro.  Define as weak
	alias if [USE_WIDE_CHAR].
	* stdlib/strtod_l.c: Include <bits/floatn.h>.
	(BUILD_DOUBLE): New macro.
	[BUILD_DOUBLE && __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64]
	(strtof64_l): Define and later undefine as macro.  Define as weak
	alias if [!USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64]
	(wcstof64_l): Define and later undefine as macro.  Define as weak
	alias if [USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X]
	(strtof32x_l): Define and later undefine as macro.  Define as weak
	alias if [!USE_WIDE_CHAR].
	[BUILD_DOUBLE && __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X]
	(wcstof32x_l): Define and later undefine as macro.  Define as weak
	alias if [USE_WIDE_CHAR].

Patch

diff --git a/stdlib/strtod.c b/stdlib/strtod.c
index 2ac1b2e..546ab9e3 100644
--- a/stdlib/strtod.c
+++ b/stdlib/strtod.c
@@ -17,6 +17,25 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <bits/floatn.h>
+
+#ifdef FLOAT
+# define BUILD_DOUBLE 0
+#else
+# define BUILD_DOUBLE 1
+#endif
+
+#if BUILD_DOUBLE
+# if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+#  define strtof64 __hide_strtof64
+#  define wcstof64 __hide_wcstof64
+# endif
+# if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+#  define strtof32x __hide_strtof32x
+#  define wcstof32x __hide_wcstof32x
+# endif
+#endif
+
 #include <stdlib.h>
 #include <wchar.h>
 #include <locale/localeinfo.h>
@@ -78,3 +97,24 @@  compat_symbol (libc, __strtod_internal, __strtold_internal, GLIBC_2_0);
 #  endif
 # endif
 #endif
+
+#if BUILD_DOUBLE
+# if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+#  undef strtof64
+#  undef wcstof64
+#  ifdef USE_WIDE_CHAR
+weak_alias (wcstod, wcstof64)
+#  else
+weak_alias (strtod, strtof64)
+#  endif
+# endif
+# if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+#  undef strtof32x
+#  undef wcstof32x
+#  ifdef USE_WIDE_CHAR
+weak_alias (wcstod, wcstof32x)
+#  else
+weak_alias (strtod, strtof32x)
+#  endif
+# endif
+#endif
diff --git a/stdlib/strtod_l.c b/stdlib/strtod_l.c
index 9fc9e4c..3008721 100644
--- a/stdlib/strtod_l.c
+++ b/stdlib/strtod_l.c
@@ -17,6 +17,25 @@ 
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <bits/floatn.h>
+
+#ifdef FLOAT
+# define BUILD_DOUBLE 0
+#else
+# define BUILD_DOUBLE 1
+#endif
+
+#if BUILD_DOUBLE
+# if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+#  define strtof64_l __hide_strtof64_l
+#  define wcstof64_l __hide_wcstof64_l
+# endif
+# if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+#  define strtof32x_l __hide_strtof32x_l
+#  define wcstof32x_l __hide_wcstof32x_l
+# endif
+#endif
+
 #include <locale.h>
 
 extern double ____strtod_l_internal (const char *, char **, int, locale_t);
@@ -1784,3 +1803,24 @@  compat_symbol (libc, strtod_l, strtold_l, GLIBC_2_3);
 #  endif
 # endif
 #endif
+
+#if BUILD_DOUBLE
+# if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
+#  undef strtof64_l
+#  undef wcstof64_l
+#  ifdef USE_WIDE_CHAR
+weak_alias (wcstod_l, wcstof64_l)
+#  else
+weak_alias (strtod_l, strtof64_l)
+#  endif
+# endif
+# if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
+#  undef strtof32x_l
+#  undef wcstof32x_l
+#  ifdef USE_WIDE_CHAR
+weak_alias (wcstod_l, wcstof32x_l)
+#  else
+weak_alias (strtod_l, strtof32x_l)
+#  endif
+# endif
+#endif