petsc-3.12.5 2020-03-29
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VecMAXPY

 Computes y = y + sum alpha[i] x[i]

Synopsis

#include "petscvec.h"   
PetscErrorCode  VecMAXPY(Vec y,PetscInt nv,const PetscScalar alpha[],Vec x[])
Logically Collective on Vec

Input Parameters

nv - number of scalars and x-vectors
alpha - array of scalars
y - one vector
x - array of vectors

Notes

y cannot be any of the x vectors

See Also

VecAYPX(), VecWAXPY(), VecAXPY(), VecAXPBYPCZ(), VecAXPBY()

Level

intermediate

Location

src/vec/vec/interface/rvector.c

Examples

src/vec/vec/examples/tutorials/ex1.c.html
src/vec/vec/examples/tutorials/ex1f.F90.html
src/vec/vec/examples/tutorials/ex1f90.F90.html
src/vec/vec/examples/tutorials/ex20f90.F90.html

Implementations

VecMAXPY_Nest in src/vec/vec/impls/nest/vecnest.c
VecMAXPY_Seq in src/vec/vec/impls/seq/dvec2.c
VecMAXPY_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecMAXPY_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