User guide

22-21
GAUSScurrentlyexaminesonlythe4'sbitofthecontrolflags.Thisbitissetto0for
realdatasets,1forcomplexdatasets.Allotherbitsare0.
Datasetsarealwaysstoredarowatatime.Arealdatasetwith2rowsand3columns
willbestoredondiskinthefollowingway,fromthelowestaddressedelementtothe
highestaddressedelement:
[1, 1] [1, 2] [1, 3]
[2, 1] [2, 2] [2, 3]
Therowsofacomplexdatasetarestoredwiththerealandimaginarypartsinterleaved,
elementbyelement.A2x3complexdataset,then,willbestoredondiskinthefol-
lowingway,fromthelowestaddressedelementtothehighestaddressedelement:
r i r i r i
r i r i r i
[1, 1] [1, 1] [1, 2] [1, 2] [1, 3] [1, 3]
[2, 1] [2, 1] [2, 2] [2, 2] [2, 3] [2, 3]
22.5.6 Extended Data Set v89 (Obsolete)
Datasetswithmorethan8175columnsaresavedinanextendedformatthatcannotbe
readbythe16-bitversion.Thesefileshavea.dhtdescriptorfileformattedasfollows:

Offset Description
0-1 EEDAhex,identificationflag
2-3 datatypein.datfile(248),unsigned2-byteinteger
4-7 reserved,all0's
8-11 columns,unsigned4-byteinteger
File I/O