VecAXPBY#

Computes y = alpha x + beta y.

Synopsis#

#include "petscvec.h"   
PetscErrorCode VecAXPBY(Vec y, PetscScalar alpha, PetscScalar beta, Vec x)

Logically Collective

Input Parameters#

  • alpha - first scalar

  • beta - second scalar

  • x - the first scaled vector

  • y - the second scaled vector

Output Parameter#

  • y - output vector

Developer Note#

The implementation is optimized for alpha and/or beta values of 0.0 and 1.0

See Also#

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

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Implementations#

VecAXPBY_Nest in src/vec/vec/impls/nest/vecnest.c
VecAXPBY_Seq in src/vec/vec/impls/seq/bvec1.c
VecAXPBY_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecAXPBY_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx

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Index of all manual pages