MatICCFactorSymbolic

 Performs symbolic incomplete Cholesky factorization for a symmetric matrix. Use MatCholeskyFactorNumeric() to complete the factorization.

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatICCFactorSymbolic(Mat mat,IS perm,MatFactorInfo *info,Mat *fact)
Collective on Mat

Input Parameters

mat - the matrix
perm - row and column permutation
info - structure containing 
     levels - number of levels of fill.

     expected fill - as ratio of original fill.

Output Parameter

fact -the factored matrix

Notes

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

See Also

MatCholeskyFactorNumeric(), MatCholeskyFactor(), MatFactorInfo

Level:developer
Location:src/mat/interface/matrix.c
Index of all Mat routines
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Index of all manual pages