petsc-3.14.5 2021-03-03
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# VecPointwiseMult

Computes the componentwise multiplication w = x*y.

### Synopsis

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

Logically Collective on Vec

### Input Parameters

| x, y | - the vectors

### Output Parameter

| w | - the result

### Notes

any subset of the x, y, and w may be the same vector.

### See Also

VecPointwiseDivide(), VecPointwiseMax(), VecPointwiseMin(), VecPointwiseMaxAbs(), VecMaxPointwiseDivide()

### Level

advanced

### Location

src/vec/vec/interface/vector.c

### Examples

src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f.F90.html
src/vec/vec/tutorials/ex1f90.F90.html
src/vec/vec/tutorials/ex20f90.F90.html
src/ksp/ksp/tutorials/ex15.c.html
src/ksp/ksp/tutorials/ex15f.F90.html
src/snes/tutorials/ex12.c.html
src/ts/tutorials/ex50.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
src/tao/pde_constrained/tutorials/elliptic.c.html
src/tao/pde_constrained/tutorials/parabolic.c.html

### Implementations

VecPointwiseMult_Nest in src/vec/vec/impls/nest/vecnest.c
VecPointwiseMult_Seq in src/vec/vec/impls/seq/bvec2.c
VecPointwiseMult_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecPointwiseMult_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecPointwiseMult_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages