VecAXPBYPCZ#

Computes z = alpha x + beta y + gamma z

Synopsis#

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

Logically Collective

Input Parameters#

  • alpha - first scalar

  • beta - second scalar

  • gamma - third scalar

  • x - first vector

  • y - second vector

  • z - third vector

Output Parameter#

  • z - output vector

Note#

x, y and z must be different vectors

Developer Notes#

The implementation is optimized for alpha of 1.0 and gamma of 1.0 or 0.0

See Also#

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

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/tao/tutorials/ex4.c

Implementations#

VecAXPBYPCZ_Nest() in src/vec/vec/impls/nest/vecnest.c
VecAXPBYPCZ_Seq() in src/vec/vec/impls/seq/bvec1.c
VecAXPBYPCZ_SeqKokkos() in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecAXPBYPCZ_SeqViennaCL() in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx


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Index of all manual pages