VecMAXPY#

Computes y = y + sum alpha[i] x[i]

Synopsis#

#include "petscvec.h"   
PetscErrorCode VecMAXPY(Vec y, PetscInt nv, const PetscScalar alpha[], Vec x[])

Logically Collective

Input Parameters#

  • nv - number of scalars and x-vectors

  • alpha - array of scalars

  • y - one vector

  • x - array of vectors

Note#

y cannot be any of the x vectors

See Also#

Vectors and Parallel Data, Vec, VecMAXPBY(),VecAYPX(), VecWAXPY(), VecAXPY(), VecAXPBYPCZ(), VecAXPBY()

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/vec/vec/tutorials/ex1.c
src/ts/tutorials/ex31.c
src/vec/vec/tutorials/ex20f90.F90
src/vec/vec/tutorials/ex1f.F90
src/vec/vec/tutorials/ex1f90.F90

Implementations#

VecMAXPY_Nest() in src/vec/vec/impls/nest/vecnest.c
VecMAXPY_Seq() in src/vec/vec/impls/seq/dvec2.c
VecMAXPY_SeqKokkos() in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecMAXPY_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