MatEliminateZeros#
eliminate the nondiagonal zero entries in place from the nonzero structure of a sparse Mat in place, meaning the same memory is used for the matrix, and no new memory is allocated.
Synopsis#
#include "petscmat.h"
PetscErrorCode MatEliminateZeros(Mat A)
Collective
Input Parameter#
A - the matrix
Developer Note#
The entries in the sparse matrix data structure are shifted to fill in the unneeded locations in the data. Thus the end of the arrays in the data structure are unneeded.
See Also#
Matrices, Mat, MatCreate(), MatCreateGraph(), MatChop()
Level#
intermediate
Location#
Implementations#
MatEliminateZeros_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatEliminateZeros_SeqAIJ in src/mat/impls/aij/seq/aij.c
Index of all Mat routines
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Index of all manual pages