# TaoSetTrustRegionTolerance

Sets a minimum step size or trust region radius. The solver will terminate when the step size or radius of the trust region is smaller than this tolerance.

## Synopsis

    #include "tao_solver.h"
    int TaoSetTrustRegionTolerance(TAO_SOLVER tao,double steptol)

Collective on TAO_SOLVER

## Input Parameters

| tao | - the TAO_SOLVER solver context
| steptol | - tolerance

## Options Database Key

-tao_steptol <trtol> -Sets steptol

## Keywords

options, convergence, trust region

## See Also

TaoSetTolerances()

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