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libm: change wording wrt gcc nan comparison bug
author
nsz
<nsz@port70.net>
Sun, 4 Mar 2012 02:38:47 +0000
(
03:38
+0100)
committer
nsz
<nsz@port70.net>
Sun, 4 Mar 2012 02:38:47 +0000
(
03:38
+0100)
libm/index.html
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diff --git
a/libm/index.html
b/libm/index.html
index
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--- a/
libm/index.html
+++ b/
libm/index.html
@@
-335,8
+335,9
@@
account: a simple x = 1e300*1e300; may not raise overflow
exception at runtime, but get optimized into x = +inf.
see compiler optimizations above.
<p>
exception at runtime, but get optimized into x = +inf.
see compiler optimizations above.
<p>
-Another x87 gcc (<4.6) bug is that comparision operators (==, <, etc)
-don't raise exceptions on nan
+Another x87 gcc bug related to fp exceptions is that
+comparision operators (==, <, etc) don't raise invalid
+when an operand is nan
(eventhough this is required by ieee + c99 annex F).
(see <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451">gcc bug52451</a>).
<p>
(eventhough this is required by ieee + c99 annex F).
(see <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451">gcc bug52451</a>).
<p>