J Supported HDS Data Types

Kappa applications can process NDFs  in one or more of the following HDS  data types. The correspondence between Fortran types and HDS data types is as follows:




HDS Type Number of bytes FORTRAN Type



_DOUBLE 8 DOUBLE PRECISION
_INTEGER 4 INTEGER
_INT64 8 INTEGER*8 (non-standard)
_REAL 4 REAL
_UBYTE 1 BYTE
_BYTE 1 BYTE
_UWORD 2 INTEGER*2
_WORD 2 INTEGER*2



(_UBYTE) and (_UWORD) types are unsigned and so permit data ranges of 0–255 and 0–65535 respectively.