petsc-3.7.7 2017-09-25
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MatICCFactorSymbolic

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

Synopsis

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

Developer Note: fortran interface is not autogenerated as the f90 interface defintion cannot be generated correctly [due to MatFactorInfo]

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