petsc-3.14.6 2021-03-30
VecWAXPY
Computes w = alpha x + y.
Synopsis
#include "petscvec.h"
PetscErrorCode VecWAXPY(Vec w,PetscScalar alpha,Vec x,Vec y)
Logically Collective on Vec
Input Parameters
| alpha | - the scalar
|
| x, y | - the vectors
|
Output Parameter
Notes
w cannot be either x or y, but x and y can be the same
The implementation is optimzed for alpha of -1.0, 0.0, and 1.0
See Also
VecAXPY(), VecAYPX(), VecAXPBY(), VecMAXPY(), VecAXPBYPCZ()
Level
intermediate
Location
src/vec/vec/interface/rvector.c
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/ts/tutorials/ex10.c.html
src/tao/unconstrained/tutorials/spectraladjointassimilation.c.html
src/tao/constrained/tutorials/tomographyADMM.c.html
src/tao/pde_constrained/tutorials/elliptic.c.html
src/tao/pde_constrained/tutorials/parabolic.c.html
src/tao/pde_constrained/tutorials/hyperbolic.c.html
src/tao/tutorials/ex4.c.html
Implementations
VecWAXPY_Nest in src/vec/vec/impls/nest/vecnest.c
VecWAXPY_Node in src/vec/vec/impls/node/vecnode.c
VecWAXPY_Seq in src/vec/vec/impls/seq/dvec2.c
VecWAXPY_SeqKokkos in src/vec/vec/impls/seq/kokkos/veckok.kokkos.cxx
VecWAXPY_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecWAXPY_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