petsc-3.7.7 2017-09-25
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MatFactorCreateSchurComplement

 Create a Schur complement matrix object using Schur data computed during the factorization step

Synopsis

#include "petscmat.h" 
PetscErrorCode MatFactorCreateSchurComplement(Mat F,Mat* S)
Logically Collective on Mat

Input Parameters

Notes

The routine provides a copy of the Schur data stored within solver's data strutures. The caller must destroy the object when it is no longer needed. If MatFactorInvertSchurComplement has been called, the routine gets back the inverse

References

See Also

MatGetFactor(), MatFactorSetSchurIS(), MatFactorGetSchurComplement()

Level:advanced
Location:src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages

F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
*S - location where to return the Schur complement (MATDENSE)