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DFANgetdesclen/dagdlen

int32 DFANgetdesclen(char *filename, uint16 tag, uint16 ref)
filename

IN:

Name of the file

tag

IN:

Tag of the data object assigned the description

ref

IN:

Reference number of the data object assigned the description

Purpose

Retrieves the length of a description of the data object with the given tag and reference number.

Return value

Returns the length of a description if successful and FAIL (or -1) otherwise.

Description

This routine should be used to insure that there is enough space allocated for a description before actually reading it.

FORTRAN

integer function dagdlen(filename, tag, ref)

character* (*) filename

integer tag, ref



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HDF User's Reference Manual, Draft 06/09/97, NCSA HDF Development Group.