PetscTruth bool?

[Barry Smith]

On Sep 24, 2008, at 9:30 AM, Matthew Knepley wrote:

> On Wed, Sep 24, 2008 at 8:51 AM, Barry Smith <bsmith at mcs.anl.gov>  
> wrote:
>>
>>  Since C++ has bool and C99 has bool, should PetscTruth be changed  
>> to be
>> defined to be bool? Instead of int.
>
> I see the motivation, but we would have to recode any MPI usages of  
> PetscTruth
> since we could not guarantee the size of bool.

    Matt,

     YOU, of all people, being pedantic :-)

     Show me a single system where a bool is not an int size.

    Actually, some Fortran compilers use a -1 as true (not a 1!), this  
is already
painful and could be tricky.


    Barry


>
>
>  Matt
>
>>  Barry
>>
>> Should we go further and simply remove PetscTruth and use bool  
>> directly in
>> its place? (logical in Fortran).
> -- 
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which
> their experiments lead.
> -- Norbert Wiener
>