VecMAXPBY#
Computes y = beta y + sum alpha[i] x[i]
Synopsis#
#include "petscvec.h"
PetscErrorCode VecMAXPBY(Vec y, PetscInt nv, const PetscScalar alpha[], PetscScalar beta, Vec x[])
Logically Collective
Input Parameters#
nv - number of scalars and
xvectorsalpha - array of scalars
beta - scalar
y - one vector
x - array of vectors
Note#
y cannot be any of the x vectors.
Developer Notes#
This is a convenience routine, but implementations might be able to optimize it, for example, when beta is zero.
See Also#
Vectors and Parallel Data, Vec, VecMAXPY(), VecAYPX(), VecWAXPY(), VecAXPY(), VecAXPBYPCZ(), VecAXPBY()
Level#
intermediate
Location#
src/vec/vec/interface/rvector.c
Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages