[petsc-users] logical operation for Vec

[Barry Smith]

  No, nothing like that. But this is easily done by call VecGetArray() looping over the array and applying the check to each entry.

  barry

On May 10, 2010, at 8:31 PM, Yujie wrote:

> Dear PETSc Developers,
> 
> I am wondering whether there is a function for Vec.
> 
> Assuming
> 
> Vec v;
> 
> double d_test;
> 
> This function can compare each values (v(i)) of v with d_test and
> return the logical values contained in Vec v_logi (such as
> if(v(i)>d_test)
>  v_logi(i)=0;
> else
>  v_logi(i)=1;  )
> 
> Thanks a lot.
> 
> Regards,
> Yujie