diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2019-10-08 01:37:45 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2019-10-08 01:37:45 +0100 |
| commit | fbb2a6dcf8abbd1a605544597442e3d67984a455 (patch) | |
| tree | 24ae9f7f7cca0794b54fdcc58088dce8cb05ac5e /gcc/doc | |
| parent | b11df8983de352246b68c1485121d4aa8f26a5bb (diff) | |
| download | gcc-fbb2a6dcf8abbd1a605544597442e3d67984a455.zip gcc-fbb2a6dcf8abbd1a605544597442e3d67984a455.tar.gz gcc-fbb2a6dcf8abbd1a605544597442e3d67984a455.tar.bz2 | |
Make C2X imply -fno-fp-int-builtin-inexact.
Since TS 18661-1 has been integrated into C2X, this patch makes C2X
imply -fno-fp-int-builtin-inexact.
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc:
* doc/invoke.texi (-ffp-int-builtin-inexact): Document
-fno-fp-int-builtin-inexact default for C2X.
gcc/c-family:
* c-opts.c (c_common_post_options): Set
-fno-fp-int-builtin-inexact for C2X.
gcc/testsuite:
* gcc.dg/torture/builtin-fp-int-inexact-c2x.c: New test.
From-SVN: r276686
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 1077930..20e10c0 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -10809,12 +10809,12 @@ Do not allow the built-in functions @code{ceil}, @code{floor}, double} variants, to generate code that raises the ``inexact'' floating-point exception for noninteger arguments. ISO C99 and C11 allow these functions to raise the ``inexact'' exception, but ISO/IEC -TS 18661-1:2014, the C bindings to IEEE 754-2008, does not allow these -functions to do so. +TS 18661-1:2014, the C bindings to IEEE 754-2008, as integrated into +ISO C2X, does not allow these functions to do so. The default is @option{-ffp-int-builtin-inexact}, allowing the -exception to be raised. This option does nothing unless -@option{-ftrapping-math} is in effect. +exception to be raised, unless C2X or a later C standard is selected. +This option does nothing unless @option{-ftrapping-math} is in effect. Even if @option{-fno-fp-int-builtin-inexact} is used, if the functions generate a call to a library function then the ``inexact'' exception |