On Oct 7, 2009, at 9:05 PM, Dag Sverre Seljebotn wrote: > It's was the middle of the night in Norway when you posted that :-) > > Anyway, I'm 1
Did you forget a sign there? > on ~x meaning x.conjugate(), because I always vote for making > Cython more like Python and less like C. It's currently an error for complex values in Python. > I can do the stuff necessarry for conjugate(), or give you hints, > which do you want? I won't be able to do it for another day. > > Dag Sverre Seljebotn > -----Original Message----- > From: Lisandro Dalcin <dalc...@gmail.com> > Date: Thursday, Oct 8, 2009 1:53 am > Subject: Re: [Cython] C++ complex support > To: cython-...@codespeak.netreply-to: cython-dev@codespeak.net > > On Wed, Oct 7, 2009 at 6:59 PM, Robert Bradshaw >> <rober...@math.washington.edu> wrote: >>> >>> Don't reopen the ticket, make a new one for C++ complex support. >>> >> >> Done: http://trac.cython.org/cython_trac/ticket/398 >> >>>> For the case of C, C99 complexes will be automatically used >>>> ONLY if >>>> _Complex_I is defined... of if the user explicitly pass >>>> "-DPYX_CCOMPLEX=1" at C-compile time (or a Cython-included C header >>>> #define PYX_CCOMPLEX=1), or if the directive "ccomplex=True". >>>> >>>> I'm still in doubt about how to handle 'ccomplex=True'... Should it >>>> just enable by default using "#define PYX_CCOMPLEX=1", or actually >>>> impact in code generation (as currently does)... >>> >>> I would be OK with it just changing the flag, with the code >>> generation remaining unchanged. >>> >> >> OK, this is work TBD in my patch... >> >>>> Ah! I forgot... I do not know how to implement z.conjugate(); the >>>> C/C99/C++ support is there though... BTW, GCC seems to accept >>>> "~z" for >>>> complex conjugation (no idea if it is C99-standard or a >>>> GCC-extension)... Perhaps Cython should accept this (non-Python) >>>> syntax? I think it is nice. >>> >>> I know is sage we map ~z to 1/z (it is the __invert__ operator after >>> all). Python doesn't define an __invert__ for their native complex >>> type. I could go either way. >>> >> >> IMHO, my brain can parse "~z" as z.conjugate(), but would have a hard >> time realizing ~z is "1/z"... Anyway, you are the BDLF, it's up to >> you... Or the champion who actually implement support for >> z.conjugate()... Hey, Dag. Are you there? ;-) >> >> >> >> -- >> Lisandro Dalcín >> --------------- >> Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC) >> Instituto de Desarrollo Tecnológico para la Industria Química (INTEC) >> Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) >> PTLC - Güemes 3450, (3000) Santa Fe, Argentina >> Tel/Fax: +54-(0)342-451.1594 >> _______________________________________________ >> Cython-dev mailing list >> Cython-dev@codespeak.net >> http://codespeak.net/mailman/listinfo/cython-dev >> > > _______________________________________________ > Cython-dev mailing list > Cython-dev@codespeak.net > http://codespeak.net/mailman/listinfo/cython-dev _______________________________________________ Cython-dev mailing list Cython-dev@codespeak.net http://codespeak.net/mailman/listinfo/cython-dev
