petsc-3.4.4 2014-03-13

VecMDot

Computes vector multiple dot products.

Synopsis

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

Input Parameters

x - one vector
nv - number of vectors
y - array of vectors.

Output Parameter

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

Notes for Users of Complex Numbers

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.

See Also

VecMTDot(), VecDot()

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

Examples

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