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| author | Brad Lucier <lucier@math.purdue.edu> | 2001-03-05 23:50:06 +0000 |
|---|---|---|
| committer | Neil Booth <neil@gcc.gnu.org> | 2001-03-05 23:50:06 +0000 |
| commit | d97b75bee3fb323447411a7f2cad05535698d5ea (patch) | |
| tree | ef7277ac688e38fcbd288d15239a5080c231a4c3 /gcc/invoke.texi | |
| parent | 1b5640cd0a0f600338be9e59df93bb309ef97d9f (diff) | |
| download | gcc-d97b75bee3fb323447411a7f2cad05535698d5ea.zip gcc-d97b75bee3fb323447411a7f2cad05535698d5ea.tar.gz gcc-d97b75bee3fb323447411a7f2cad05535698d5ea.tar.bz2 | |
* invoke.texi: Document __FAST_MATH__.
From-SVN: r40249
Diffstat (limited to 'gcc/invoke.texi')
| -rw-r--r-- | gcc/invoke.texi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/invoke.texi b/gcc/invoke.texi index c95e774..660e873 100644 --- a/gcc/invoke.texi +++ b/gcc/invoke.texi @@ -2940,6 +2940,8 @@ example, it allows the compiler to assume arguments to the @code{sqrt} function are non-negative numbers and that no floating-point values are NaNs. +This option causes the preprocessor macro __FAST_MATH__ to be defined. + This option should never be turned on by any @samp{-O} option since it can result in incorrect output for programs which depend on an exact implementation of IEEE or ISO rules/specifications for |