petsc-3.12.5 2020-03-29
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VecScale

Scales a vector.

Synopsis

#include "petscvec.h"   
PetscErrorCode  VecScale(Vec x, PetscScalar alpha)
Not collective on Vec

Input Parameters

x - the vector
alpha - the scalar

Output Parameter

x -the scaled vector

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/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex1f.F90.html
src/vec/vec/examples/tutorials/ex1f90.F90.html
src/vec/vec/examples/tutorials/ex20f90.F90.html
src/mat/examples/tutorials/ex9.c.html
src/dm/examples/tutorials/ex1.c.html
src/dm/examples/tutorials/ex7.c.html
src/dm/examples/tutorials/ex9.c.html
src/ksp/ksp/examples/tutorials/ex28.c.html
src/ksp/ksp/examples/tutorials/ex49.c.html
src/ksp/ksp/examples/tutorials/ex59.c.html

Implementations

VecScale_Nest in src/vec/vec/impls/nest/vecnest.c
VecScale_Node in src/vec/vec/impls/node/vecnode.c
VecScale_Seq in src/vec/vec/impls/seq/bvec1.c
VecScale_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
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