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FXBFINDLUN

FXBFINDLUN

Name


FXBFINDLUN()

Purpose


Find logical unit number UNIT in FXBINTABLE common block.

Explanation


Finds the proper index to use for getting information about the logical
unit number UNIT in the arrays stored in the FXBINTABLE common block.
Called from FXBCREATE and FXBOPEN.

Use


Result = FXBFINDLUN( UNIT )

Inputs


UNIT = Logical unit number.
  Opt. Inputs :
None.

Outputs


The result of the function is an index into the FXBINTABLE common
block.
  Opt. Outputs:
None.

Keywords


None.

Calls


None.
  Common :
Uses common block FXBINTABLE--see "fxbintable.pro" for more
information.

Restrictions


None.

Side Effects


If UNIT is not found in the common block, then it is added to the
common block.

Category


Data Handling, I/O, FITS, Generic.
  Prev. Hist. :
William Thompson, Feb. 1992.
  Written :
William Thompson, GSFC, February 1992.
  Modified :
Version 1, William Thompson, GSFC, 12 April 1993.
Incorporated into CDS library.
Version 2, William Thompson, GSFC, 21 July 1993.
Added DHEAP variable to fix bug with variable length arrays.
Version 3, Michael Schubnell, University of Michigan, 22 May 1996
Change N_DIMS from short to long integer.

Version


Version 3, 22 May 1996
Converted to IDL V5.0 W. Landsman September 1997
      Make NAXIS1, NAXIS2, HEAP, DHEAP, BYTOFF 64-bit integers to deal with large files,
        E. Hivon Mar 2008



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