MatCholeskyFactorSymbolic

 Performs symbolic Cholesky factorization of a symmetric matrix.

Synopsis

#include "petscmat.h" 
int MatCholeskyFactorSymbolic(Mat mat,IS perm,PetscReal f,Mat *fact)
Collective on Mat

Input Parameters

mat - the matrix
perm - row and column permutations
f - expected fill as ratio of original

Output Parameter

fact -the factored matrix

Notes

See MatLUFactorSymbolic() for the nonsymmetric case. See also MatCholeskyFactor() and MatCholeskyFactorNumeric().

Most users should employ the simplified SLES interface for linear solvers instead of working directly with matrix algebra routines such as this. See, e.g., SLESCreate().

See Also

MatLUFactorSymbolic(), MatCholeskyFactor(), MatCholeskyFactorNumeric()
MatGetOrdering()

Level:developer
Location:src/mat/interface/matrix.c
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