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Expected output for 'h5diff file1.h5 file2.h5 -d 1 g1/dset3 g1/dset4'
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$h5diff file1.h5 file2.h5 -d 1 g1/dset3 g1/dset4
position        dset3           dset4           difference          
------------------------------------------------------------
[ 0 0 ]          100             110             10             
[ 0 1 ]          110             100             10             
[ 1 0 ]          100             90              10             
[ 1 1 ]          100             80              20             
[ 2 0 ]          100             140             40             
[ 2 1 ]          100             200             100