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.

See Also#

Vectors and Parallel Data, Vec, VecSet()

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/dm/impls/stag/tutorials/ex2.c
src/dm/impls/stag/tutorials/ex3.c
src/dm/impls/stag/tutorials/ex4.c
src/dm/tutorials/ex1.c
src/dm/tutorials/ex7.c
src/dm/tutorials/ex9.c
src/ksp/ksp/tutorials/ex28.c
src/ksp/ksp/tutorials/ex49.c
src/ksp/ksp/tutorials/ex59.c
src/ksp/ksp/tutorials/ex60.c
src/mat/tutorials/ex9.c

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_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