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math: Fix unknown type name '__float128' for clang 3.4 to 3.8.1 (bug 32694)

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When compiling a program that includes <bits/floatn.h> using a clang version
between 3.4 (included) and 3.8.1 (included), clang will fail with `unknown type
name '__float128'; did you mean '__cfloat128'?`. This changes fixes the clang
prerequirements macro call in floatn.h to check for clang 3.9 instead of 3.4,
since support for __float128 was actually enabled in 3.9 by:

commit 50f29e06a1b6a38f0bba9360cbff72c82d46cdd4
Author: Nemanja Ivanovic <nemanja.i.ibm@gmail.com>
Date:   Wed Apr 13 09:49:45 2016 +0000

    Enable support for __float128 in Clang

This fixes bug 32694.

Signed-off-by: koraynilay <koray.fra@gmail.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
koraynilay 2025-02-22 15:55:59 +01:00 committed by H.J. Lu
parent 689a62a421
commit 29803ed3ce
1 changed files with 2 additions and 2 deletions
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4
sysdeps/x86/bits/floatn.h
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@ -31,7 +31,7 @@
#if (defined __x86_64__ \
? __GNUC_PREREQ (4, 3) \
: (defined __GNU__ ? __GNUC_PREREQ (4, 5) : __GNUC_PREREQ (4, 4))) \
|| (__glibc_clang_prereq (3, 4) \
|| (__glibc_clang_prereq (3, 9) \
&& (!defined __INTEL_LLVM_COMPILER \
|| !defined SYCL_LANGUAGE_VERSION))
# define __HAVE_FLOAT128 1
@ -93,7 +93,7 @@ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__)));
/* The type _Float128 exists only since GCC 7.0. */
# if !__GNUC_PREREQ (7, 0) \
|| (defined __cplusplus && !__GNUC_PREREQ (13, 0)) \
|| __glibc_clang_prereq (3, 4)
|| __glibc_clang_prereq (3, 9)
typedef __float128 _Float128;
# endif