#include "petscmat.h" PetscErrorCode MatZeroRowsColumnsLocal(Mat mat,PetscInt numRows,const PetscInt rows[],PetscScalar diag,Vec x,Vec b)Collective on Mat
mat | - the matrix | |
numRows | - the number of rows to remove | |
rows | - the global row indices | |
diag | - value put in all diagonals of eliminated rows | |
x | - optional vector of solutions for zeroed rows (other entries in vector are not used) | |
b | - optional vector of right hand side, that will be adjusted by provided solution |
The user can set a value in the diagonal entry (or for the AIJ and row formats can optionally remove the main diagonal entry from the nonzero structure as well, by passing 0.0 as the final argument).
Level:intermediate
Location:src/mat/interface/matrix.c
Index of all Mat routines
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Index of all manual pages