[mkgmap-dev] Commit r4191: small DEM performance improvement: reduce number of double[][] allocations

From svn commit svn at mkgmap.org.uk on Wed May 16 14:40:17 BST 2018

Version mkgmap-r4191 was committed by gerd on Wed, 16 May 2018

small DEM performance improvement: reduce number of double[][] allocations 

Keep the 4x4 array that is filled for the bicubic interpolation
to reduce GC strees

http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4191

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