#include "petscvec.h" PetscErrorCode VecStrideNorm(Vec v,PetscInt start,NormType ntype,PetscReal *nrm)Collective on Vec Many br
v | - the vector Many br | |
start | - starting point of the subvector (defined by a stride) Many br | |
ntype | - type of norm, one of NORM_1, NORM_2, NORM_INFINITY Many br |
If x is the array representing the vector x then this computes the norm Many brof the array (x[start],x[start+stride],x[start+2*stride], ....) Many br
This is useful for computing, say the norm of the pressure variable when Many brthe pressure is stored (interlaced) with other variables, say density etc. Many br
This will only work if the desire subvector is a stride subvector Many br
Many br
Level:advanced
Location:src/vec/vec/utils/vinv.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages