petsc-3.14.6 2021-03-30

VecNormEnd

Ends a split phase norm computation.

#include "petscvec.h"    
PetscErrorCode  VecNormEnd(Vec x,NormType ntype,PetscReal *result)

	x	- the first vector
	ntype	- norm type, one of NORM_1, NORM_2, NORM_MAX, NORM_1_AND_2
	result	- where the result will go

Each call to VecNormBegin() should be paired with a call to VecNormEnd().

The x vector is not allowed to be NULL, otherwise the vector would not have its correctly cached norm value

advanced