#include "petscvec.h" PetscErrorCode VecStrideNormAll(Vec v,NormType ntype,PetscReal nrm[])Collective on Vec
v | - the vector | |
ntype | - type of norm, one of NORM_1, NORM_2, NORM_INFINITY |
nrm | - the norms |
If x is the array representing the vector x then this computes the norm of the array (x[start],x[start+stride],x[start+2*stride], ....) for each start < stride
The dimension of nrm must be the same as the vector block size
This will only work if the desire subvector is a stride subvector