Hi David, On Mon, Sep 29, 2008 at 9:07 PM, David Cournapeau < [EMAIL PROTECTED]> wrote:
> Charles R Harris wrote: > > > > Thanks, that was very helpful. I wonder how widespread the less, > > lessequal, etc. macros are? > > If it is C99, count on some platforms (MS in particular) to not do it. > Also, when doing things in C, beware that some compilers break most > reasonable expectations about floating points. In particular, x - x > where x is a NaN or inf will returns 0 with MS compilers with the > compiler flags currently used in python (/Ox), which breaks almost any > code out there relying on proper NaN/Inf handling. So if possible, > special case with isnan/isinf/isfinite > Do any of the MS compilers handle these things correctly? I am loath to load up the code with expensive macros just to deal with bass ackwards compilers. Especially if I have to special case all the infs also. However, if I can use ifdefs to compile various versions I could be talked into it. OTOH, we could just say the results are undefined when non-conforming compilers are used. Chuck
_______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
