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,beta, gamma - the scalars

  • x, y, z - the vectors

Output Parameter#

  • z - output vector

Notes#

x, y and z must be different vectors The implementation is optimized for alpha of 1.0 and gamma of 1.0 or 0.0

See Also#

VecAYPX(), VecMAXPY(), VecWAXPY(), VecAXPY(), VecAXPBY()

Level#

intermediate

Location#

src/vec/vec/interface/rvector.c

Examples#

src/tao/tutorials/ex4.c.html

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_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecAXPBYPCZ_SeqHIP in src/vec/vec/impls/seq/seqhip/vechip2.hip.c
VecAXPBYPCZ_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx


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