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,beta - the scalars
x - the first scaled vector
y - the second scaled vector
Output Parameter#
y - output vector
Note#
x
and y
MUST be different vectors
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#
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_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecAXPBY_SeqHIP in src/vec/vec/impls/seq/seqhip/vechip2.hip.c
VecAXPBY_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