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
Developer Notes#
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/ksp/ksp/tutorials/ex100f.F90
src/ksp/ksp/tutorials/ex100.c
src/tao/pde_constrained/tutorials/hyperbolic.c
src/ksp/ksp/tutorials/ex14f.F90
src/tao/pde_constrained/tutorials/parabolic.c
src/tao/pde_constrained/tutorials/elliptic.c
src/ksp/ksp/tutorials/ex74.c
src/ts/tutorials/ex74.c
src/ts/tutorials/ex9.c
src/ts/tutorials/ex3.c
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_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