VecScale#

Scales a vector.

Synopsis#

#include "petscvec.h"   
PetscErrorCode VecScale(Vec x, PetscScalar alpha)

Not collective

Input Parameters#

  • x - the vector

  • alpha - the scalar

Note#

For a vector with n components, VecScale() computes

x[i] = alpha * x[i], for i=1,...,n.

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f90.F90.html
src/vec/vec/tutorials/ex1f.F90.html
src/vec/vec/tutorials/ex20f90.F90.html
src/mat/tutorials/ex9.c.html
src/dm/impls/stag/tutorials/ex2.c.html
src/dm/impls/stag/tutorials/ex3.c.html
src/dm/impls/stag/tutorials/ex4.c.html
src/dm/tutorials/ex1.c.html
src/dm/tutorials/ex7.c.html
src/dm/tutorials/ex9.c.html

Implementations#

VecScale_Nest in src/vec/vec/impls/nest/vecnest.c
VecScale_Seq in src/vec/vec/impls/seq/bvec1.c
VecScale_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecScale_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecScale_SeqHIP in src/vec/vec/impls/seq/seqhip/vechip2.hip.c
VecScale_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx


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Index of all Vec routines
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Index of all manual pages