# TaoGetStepDirectionVector

Returns the vector where the solution update is stored.

## Synopsis

    #include "tao_solver.h"
    int TaoGetStepDirectionVector(TAO_SOLVER tao,TaoVec** xx)

Not Collective, but Vec is parallel if TAO_SOLVER is parallel

## Input Parameter

tao -the TAO_SOLVER solver context

## Output Parameter

xx -the solution update

## Keywords

solution

## See Also

TaoGetSolution()

Level:developer
Location:src/interface/tao.c
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