Declare wcstofN, wcstofNx for C2x

Declare wcstofN, wcstofNx for C2x

[Joseph Myers]

WG14 accepted the changes in N3105 to define wcstofN and wcstofNx
functions for C2x.  Thus enable those for C2x (given also __GLIBC_USE
(IEC_60559_TYPES_EXT) and support for the relevant _FloatN / _FloatNx
type) rather than only for __USE_GNU.

Tested for x86_64.

diff --git a/wcsmbs/wchar.h b/wcsmbs/wchar.h
index cde0d32b0a..191427830e 100644
--- a/wcsmbs/wchar.h
+++ b/wcsmbs/wchar.h
@@ -386,42 +386,44 @@ extern long double wcstold (const wchar_t *__restrict __nptr,
 			    wchar_t **__restrict __endptr) __THROW;
 #endif /* C99 */
 
+#if __GLIBC_USE (IEC_60559_TYPES_EXT) && __GLIBC_USE (ISOC2X)
 /* Likewise for `_FloatN' and `_FloatNx' when support is enabled.  */
 
-#if __HAVE_FLOAT16 && defined __USE_GNU
+# if __HAVE_FLOAT16
 extern _Float16 wcstof16 (const wchar_t *__restrict __nptr,
 			  wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT32 && defined __USE_GNU
+# if __HAVE_FLOAT32
 extern _Float32 wcstof32 (const wchar_t *__restrict __nptr,
 			  wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT64 && defined __USE_GNU
+# if __HAVE_FLOAT64
 extern _Float64 wcstof64 (const wchar_t *__restrict __nptr,
 			  wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT128 && defined __USE_GNU
+# if __HAVE_FLOAT128
 extern _Float128 wcstof128 (const wchar_t *__restrict __nptr,
 			    wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT32X && defined __USE_GNU
+# if __HAVE_FLOAT32X
 extern _Float32x wcstof32x (const wchar_t *__restrict __nptr,
 			    wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT64X && defined __USE_GNU
+# if __HAVE_FLOAT64X
 extern _Float64x wcstof64x (const wchar_t *__restrict __nptr,
 			    wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
 
-#if __HAVE_FLOAT128X && defined __USE_GNU
+# if __HAVE_FLOAT128X
 extern _Float128x wcstof128x (const wchar_t *__restrict __nptr,
 			      wchar_t **__restrict __endptr) __THROW;
-#endif
+# endif
+#endif /* __GLIBC_USE (IEC_60559_TYPES_EXT) && __GLIBC_USE (ISOC2X) */
 
 
 /* Convert initial portion of wide string NPTR to `long int'

-- 
Joseph S. Myers
joseph@codesourcery.com

Ping Re: Declare wcstofN, wcstofNx for C2x

[Joseph Myers]

Ping.  This patch 
<https://sourceware.org/pipermail/libc-alpha/2023-February/145884.html> is 
pending review.

-- 
Joseph S. Myers
joseph@codesourcery.com

Re: Declare wcstofN, wcstofNx for C2x

[Andreas Schwab]

On Feb 25 2023, Joseph Myers wrote:

> WG14 accepted the changes in N3105 to define wcstofN and wcstofNx
> functions for C2x.  Thus enable those for C2x (given also __GLIBC_USE
> (IEC_60559_TYPES_EXT) and support for the relevant _FloatN / _FloatNx
> type) rather than only for __USE_GNU.

Ok.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."