Re: [boost] GSoC Ideas: Optimizing Boost libraries for multi-coremachines

From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2008-04-02 17:59:40

On Wed, Apr 2, 2008 at 11:37 PM, Stephen Nuchia <snuchia_at_[hidden]> wrote:
>
>  > Does #ifdef around #pragma omp indeed work? At least
>  > #define PARALLEL #pragma omp
>  > and using PARALLEL does not work.
>
>  I think the above may clash with either the definition or an
>  implementation of #pragma; I can't recall ever successfully using a
>  macro that expands to any directive.  But that could be because I
>  haven't tried it in the last twenty years :-)
>

I do not think that there is any way for a macro to expand to a directive.
Except that C99 has _Pragma that can be used in macros. I do not know
how many c++ compilers support it nor
if it actually works with OpenMP.

-- 
gpd