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-rw-r--r--lib/isnanl-nolibm.h32
1 files changed, 12 insertions, 20 deletions
diff --git a/lib/isnanl-nolibm.h b/lib/isnanl-nolibm.h
index 2639b3c..a4374e7 100644
--- a/lib/isnanl-nolibm.h
+++ b/lib/isnanl-nolibm.h
@@ -1,35 +1,27 @@
/* Test for NaN that does not need libm.
- Copyright (C) 2007-2018 Free Software Foundation, Inc.
+ Copyright (C) 2007-2022 Free Software Foundation, Inc.
- This program is free software: you can redistribute it and/or
- modify it under the terms of either:
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
- * the GNU Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- or both in parallel, as here.
- This program is distributed in the hope that it will be useful,
+ This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
+ GNU Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#if HAVE_ISNANL_IN_LIBC
/* Get declaration of isnan macro or (older) isnanl function. */
# include <math.h>
-# if __GNUC__ >= 4
- /* GCC 4.0 and newer provides three built-ins for isnan. */
+# if (__GNUC__ >= 4) || (__clang_major__ >= 4)
+ /* GCC >= 4.0 and clang provide a type-generic built-in for isnan.
+ GCC >= 4.0 also provides __builtin_isnanl, but clang doesn't. */
# undef isnanl
-# define isnanl(x) __builtin_isnanl ((long double)(x))
+# define isnanl(x) __builtin_isnan ((long double)(x))
# elif defined isnan
# undef isnanl
# define isnanl(x) isnan ((long double)(x))