BVDotVecBegin — SLEPc 3.25.1 documentation

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# BVDotVecBegin

Starts a split phase dot product computation.

## Synopsis

    #include "slepcbv.h"
    PetscErrorCode BVDotVecBegin(BV X,Vec y,PetscScalar *m)

## Input Parameters

- X - basis vectors

- y - a vector

- m - an array where the result will go (can be `NULL`)

## Note

Each call to `BVDotVecBegin()` should be paired with a call to `BVDotVecEnd()`.

## See Also

BV: Basis Vectors, `BVDotVecEnd()`, `BVDotVec()`

## Level

advanced

## Location

src/sys/classes/bv/interface/bvglobal.c

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