This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Documentation for fp-contract
- From: David Edelsohn <dje dot gcc at gmail dot com>
- To: Richard Biener <richard dot guenther at gmail dot com>
- Cc: GCC Development <gcc at gcc dot gnu dot org>
- Date: Fri, 5 Apr 2013 10:59:22 -0400
- Subject: Documentation for fp-contract
Richi,
The GCC documentation for fp-contract is a little confusing and I'm
not sure what was intended. The last sentences says:
"-ffp-contract=on enables floating-point expression contraction if
allowed by the language standard. This is currently not implemented
and treated equal to -ffp-contract=off."
Apparently "This" refers to "on". So contraction is enabled for
"fast" but the documentation implies that "on" is implemented as "off"
instead of "fast", i.e., explicitly choosing "on" will disable the
contraction.
What did you intend?
Thanks, David