[gdal-dev] GDALComputeRasterMinMax Error

[RSyaoxin]

Hi,all
       I have a 32-float image with much "NoDatavalue",and I want to get the
minimum value and maximum value.Here is my code:

       int         bGotMin, bGotMax;
       double      adfMinMax[2];
	
       double nodata=poBand->GetNoDataValue();
       poBand->SetNoDataValue(nodata);
       adfMinMax[0] = poBand->GetMinimum( &bGotMin );
       adfMinMax[1] = poBand->GetMaximum( &bGotMax );
       if( ! (bGotMin && bGotMax) )
          GDALComputeRasterMinMax(poBand, FALSE, adfMinMax);

      The maximum value(34.3386) I obtained that is right,but the minimum
value is -1.#INF,not -61.990734.  -61.990734 is what I want results. That's
Why?I hope to get some help.
Thank you! 
Kind regards. 

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