MatFactorGetCanUseOrdering

Indicates if the factorization can use the ordering provided in MatLUFactorSymbolic(), MatCholeskyFactorSymbolic()

Synopsis

#include "petscmat.h" 
PetscErrorCode MatFactorGetCanUseOrdering(Mat mat, PetscBool *flg)

Logically Collective

Input Parameter

• mat - the matrix

Output Parameter

• flg - PETSC_TRUE if uses the ordering

Note

Most internal PETSc factorizations use the ordering passed to the factorization routine but external packages do not, thus we want to skip generating the ordering when it is not needed or used.

See Also

Matrices, Mat, Matrix Factorization, MatCopy(), MatDuplicate(), MatGetFactorAvailable(), MatGetFactor(), MatLUFactorSymbolic(), MatCholeskyFactorSymbolic()

Level

developer

Location

src/mat/interface/matrix.c

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