petsc-master 2018-04-19
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MatCopy

Copys a matrix to another matrix.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatCopy(Mat A,Mat B,MatStructure str)
Collective on Mat

Input Parameters

A - the matrix
str - SAME_NONZERO_PATTERN or DIFFERENT_NONZERO_PATTERN

Output Parameter

B -where the copy is put

Notes

If you use SAME_NONZERO_PATTERN then the two matrices had better have the same nonzero pattern or the routine will crash.

MatCopy() copies the matrix entries of a matrix to another existing matrix (after first zeroing the second matrix). A related routine is MatConvert(), which first creates a new matrix and then copies the data.

See Also

MatConvert(), MatDuplicate()

Level

intermediate

Location

src/mat/interface/matrix.c

Examples

src/ts/examples/tutorials/ex3.c.html
src/ts/examples/tutorials/ex50.c.html
src/tao/unconstrained/examples/tutorials/spectraladjointassimilation.c.html
src/tao/pde_constrained/examples/tutorials/elliptic.c.html
src/tao/pde_constrained/examples/tutorials/parabolic.c.html
src/tao/pde_constrained/examples/tutorials/hyperbolic.c.html

Implementations

MatCopy_seqaij_seqaij_MKL_CPARDISO in src/mat/impls/aij/mpi/mkl_cpardiso/mkl_cpardiso.c
MatCopy_MPIAIJ in src/mat/impls/aij/mpi/mpiaij.c
MatCopy_SeqAIJ in src/mat/impls/aij/seq/aij.c
MatCopy_MPIBAIJ in src/mat/impls/baij/mpi/mpibaij.c
MatCopy_SeqBAIJ in src/mat/impls/baij/seq/baij.c
MatCopy_SeqDense in src/mat/impls/dense/seq/dense.c
MatCopy_Elemental in src/mat/impls/elemental/matelem.cxx
MatCopy_IS in src/mat/impls/is/matis.c
MatCopy_Nest in src/mat/impls/nest/matnest.c
MatCopy_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c
MatCopy_SeqSBAIJ in src/mat/impls/sbaij/seq/sbaij.c
MatCopy_MPISELL in src/mat/impls/sell/mpi/mpisell.c
MatCopy_SeqSELL in src/mat/impls/sell/seq/sell.c
MatCopy_Shell in src/mat/impls/shell/shell.c

Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages