[petsc-users] PetscKernel_A_gets_inverse_A_4

[Fande Kong]

Hi all,

I want to get the inverse of 4X4 matrix, and I found a function
PetscKernel_A_gets_inverse_A_4 which possibly reaches my purpose. But there
is a extra parameter 'shift'. What value should I use for the parameter
'shift'?

Fande,