On 21/12/11 01:27, Miles Bader wrote:
David Brown<david@xxxxxxxxxxxxxxx> writes:
Making "-Wfloat-equal" a default flag would eliminate many of these
mistakes.
It also results in false positives, so it shouldn't be on by default.
[E.g. "float x = 0; .... y = x; ... if (y == 0) ..." should not result
in a warning.]
-Miles
I gather (from the bug report mentioned by Vincent Lefevre) that code
like this will not always give the result you expect - so the compiler
should definitely warn in such cases. (Alternatively the compiler could
be changed so that such code is always consistent regardless of
architecture, floating point options, and optimisation options - I
suspect giving a warning is easier.)
mvh.,
David
