petsc-3.7.7 2017-09-25

VecMDot

Computes vector multiple dot products.

#include "petscvec.h"   
PetscErrorCode  VecMDot(Vec x,PetscInt nv,const Vec y[],PetscScalar val[])

Collective on Vec

val -array of the dot products (does not allocate the array)

For complex vectors, VecMDot() computes

    val = (x,y) = y^H x,

where y^H denotes the conjugate transpose of y.

Use VecMTDot() for the indefinite form

    val = (x,y) = y^T x,

where y^T denotes the transpose of y.