On Tue, Dec 8, 2009 at 6:32 PM, Greg Ewing <[email protected]> wrote: > Lisandro Dalcin wrote: > >> After much thinking, I'm not sure why Cython (and likely Pyrex) do >> require a constant expression here... Could we relax this requirement? > > Allowing a fully general expression here would be quite > tricky, as it needs to be evaluable in any context where > the function is called. >
Yes, I understand. > However it might be possible to relax it enough to allow > an extern variable. > That's basically what I'm asking for. > Are you sure you really need to use this particular value, > though? If NULL is a valid return value, you can use > 'except? NULL' (with a question mark) to have an exception > test generated if the value is NULL. > The point is that NULL is not a valid return value, but MPI_COMM_NULL is. -- 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 [email protected] http://codespeak.net/mailman/listinfo/cython-dev
