ITONUM: Converting a Large to Double-Precision Format

How to:

The ITONUM function converts a large in a non-FOCUS data source to double-precision format.

You must specify how many of the right-most bytes in the input field are significant. The result is an 8-byte double-precision field.

Syntax: How to Convert a Large Binary Integer to Double-Precision Format

ITONUM(maxbytes, infield, output)

where:

maxbytes

Numeric

Is the maximum number of bytes in the 8-byte binary input field that have significant numeric data, including the binary sign. Valid values are:

5 ignores the left-most 3 bytes.

6 ignores the left-most 2 bytes.

7 ignores the left-most byte.

infield

Is the field that contains the number. Both the USAGE and ACTUAL formats of the field must be A8.

output

Double precision floating-point (Dn)

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