VecCopy#

Copies a vector y = x

Synopsis#

#include "petscvec.h"   
PetscErrorCode VecCopy(Vec x, Vec y)

Logically Collective

Input Parameter#

x - the vector

Output Parameter#

y - the copy

Note#

For default parallel PETSc vectors, both x and y must be distributed in the same manner; local copies are done.

Developer Note#

PetscCheckSameTypeAndComm(x,1,y,2) is not used on these vectors because we allow one of the vectors to be sequential and one to be parallel so long as both have the same local sizes. This is used in some internal functions in PETSc.

Level#

beginner

Location#

src/vec/vec/interface/vector.c

Examples#

src/dm/impls/stag/tutorials/ex1.c
src/dm/impls/stag/tutorials/ex2.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/swarm/tutorials/ex1.c
src/dm/impls/swarm/tutorials/ex1f90.F90
src/dm/tutorials/ex15.c
src/ksp/ksp/tutorials/ex14f.F90
src/ksp/ksp/tutorials/ex27.c
src/ksp/ksp/tutorials/ex28.c
src/ksp/ksp/tutorials/ex9.c
src/mat/tutorials/ex9.c

Implementations#

VecCopy_Nest in src/vec/vec/impls/nest/vecnest.c
VecCopy_Seq in src/vec/vec/impls/seq/bvec2.c
VecCopy_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecCopy_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx

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