From d97b75bee3fb323447411a7f2cad05535698d5ea Mon Sep 17 00:00:00 2001 From: Brad Lucier Date: Mon, 5 Mar 2001 23:50:06 +0000 Subject: [PATCH] * invoke.texi: Document __FAST_MATH__. From-SVN: r40249 --- gcc/ChangeLog | 4 ++++ gcc/invoke.texi | 2 ++ 2 files changed, 6 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a82ff50928f..6a2442b71a4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2001-03-05 Brad Lucier + + * invoke.texi: Document __FAST_MATH__. + 2001-03-05 Kaveh R. Ghazi * crtstuff.c: Restore include of auto-host.h. diff --git a/gcc/invoke.texi b/gcc/invoke.texi index c95e7746ac3..660e8732c40 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 -- 2.30.2