The floating-point info record, if present, has the following format:
/* Header. */ int32 rec_type; int32 subtype; int32 size; int32 count; /* Data. */ flt64 sysmis; flt64 highest; flt64 lowest;
Record type. Always set to 7.
Record subtype. Always set to 4.
Size of each piece of data in the data part, in bytes. Always set to 8.
Number of pieces of data in the data part. Always set to 3.
The system missing value, the value used for HIGHEST in missing values, and the value used for LOWEST in missing values, respectively. See System File Format, for more information.
The SPSSWriter library in PHP, which identifies itself as
SPSS 1.0.0 in the file header record
prod_name field, writes
unexpected values to these fields, but it uses the same values
consistently throughout the rest of the file.