VecAYPX#
Computes y = x + beta y
.
Synopsis#
#include "petscvec.h"
PetscErrorCode VecAYPX(Vec y, PetscScalar beta, Vec x)
Logically Collective
Input Parameters#
beta - the scalar
x - the unscaled vector
y - the vector to be scaled
Output Parameter#
y - output vector
Note#
x
and y
MUST be different vectors
Developer Note#
The implementation is optimized for beta of -1.0, 0.0, and 1.0
See Also#
Vectors and Parallel Data, Vec
, VecMAXPY()
, VecWAXPY()
, VecAXPY()
, VecAXPBYPCZ()
, VecAXPBY()
Level#
intermediate
Location#
Examples#
src/vec/vec/tutorials/ex1.c.html
src/vec/vec/tutorials/ex1f.F90.html
src/vec/vec/tutorials/ex1f90.F90.html
src/vec/vec/tutorials/ex20f90.F90.html
src/ksp/ksp/tutorials/ex100.c.html
src/ksp/ksp/tutorials/ex100f.F90.html
src/ksp/ksp/tutorials/ex14f.F90.html
src/ksp/ksp/tutorials/ex74.c.html
src/ts/tutorials/ex3.c.html
src/ts/tutorials/ex31.c.html
src/ts/tutorials/ex51.c.html
Implementations#
VecAYPX_Nest in src/vec/vec/impls/nest/vecnest.c
VecAYPX_Seq in src/vec/vec/impls/seq/dvec2.c
VecAYPX_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecAYPX_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecAYPX_SeqHIP in src/vec/vec/impls/seq/seqhip/vechip2.hip.c
VecAYPX_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