NDF_SIZE - Determine the size of an NDF

Description:

The routine returns the number of pixels in the NDF whose identifier is supplied (i.e. the product of its dimensions).

Invocation:

CALL NDF_SIZE( INDF, NPIX, STATUS )

Arguments:

INDF = INTEGER (Given)

NDF identifier.

NPIX = INTEGER (Returned)

Number of pixels in the NDF.

STATUS = INTEGER (Given and Returned)

The global status.

Notes:

• If this routine is called with STATUS set, then a value of 1 will be returned for the NPIX argument, although no further processing will occur. The same value will also be returned if the routine should fail for any reason.