[petsc-users] PETSC_i

[Barry Smith]

> On Jan 11, 2016, at 1:15 PM, Jin, Shuangshuang <Shuangshuang.Jin at pnnl.gov> wrote:
> 
> Hi, I have the following codes (The version of Petsc installed on my machine has PetscScalar set to be complex number):
>  
> double ival_re, ival_im;
> PetscScalar val;
> …
> val  = ival_re + PETSC_i * ival_im;
>  
> I got a compilation error below: 
>  
> error: cannot convert 'std::complex<double>' to 'PetscScalar {aka double}' in assignment

   For sure something is wrong. It definitely believes that PetscScalar is a double when it will be std::complex<double> if all the ducks are in order. Did/does make test work after you installed PETSc?

  Barry

>  
> Even if I set “val = 1.0 * PETSC_i;”, the error stays the same.
>  
> Can anyone help to evaluate the problem?
>  
> Thanks,
> Shuangshuang