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| author | ed <ed@FreeBSD.org> | 2013-04-27 21:18:34 +0000 |
|---|---|---|
| committer | ed <ed@FreeBSD.org> | 2013-04-27 21:18:34 +0000 |
| commit | 122d06c54099c05d307b2dc49493a716cbc4f225 (patch) | |
| tree | ba7b6ae7ac7f7b9fb817b26a6b33f2531f530d4e /include | |
| parent | 7b9fef1391980ba73dcc1c4ea9b36dcb7f6f7794 (diff) | |
| download | FreeBSD-src-122d06c54099c05d307b2dc49493a716cbc4f225.zip FreeBSD-src-122d06c54099c05d307b2dc49493a716cbc4f225.tar.gz | |
Enable improved <tgmath.h> for Clang even when not using C11.
By using __has_extension(c_generic_selections), we can explicitly test
whether we're dealing with a version of Clang that supports _Generic().
That way we can use the improved <tgmath.h> code, even when not using
-std=c11. This massively reduces the compilation time when invoking
these functions.
Diffstat (limited to 'include')
| -rw-r--r-- | include/tgmath.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/tgmath.h b/include/tgmath.h index 9302302..7f4de6f 100644 --- a/include/tgmath.h +++ b/include/tgmath.h @@ -60,7 +60,8 @@ * compilers use an inefficient yet reliable version. */ -#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L +#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \ + __has_extension(c_generic_selections) #define __tg_generic(x, cfnl, cfn, cfnf, fnl, fn, fnf) \ _Generic(x, \ long double _Complex: cfnl, \ |
