GVecEvaluateOperatorGalerkin

Evaluates the weak form of an operator over a field on the locations defined by the underlying grid and its discretization.

#include "gvec.h" 
int GVecEvaluateOperatorGalerkin(GVec v, GVec x, GVec y, int sField, int tField, int op, PetscScalar alpha, void *ctx)

v -The grid vector

x,y -The input grid vectors, usually the previous solution

sField -The shape function field

tField -The test function field

op -The operator

alpha -A scalar multiplier

ctx -An optional user provided context for the function