FREE_LUN Procedure

FREE_LUN Procedure

Deallocates file units previously allocated with GET_LUN.

Usage

FREE_LUN, unit1, ..., unitn

Input Parameters

uniti—The file units (logical unit numbers) to deallocate.

Keywords

None.

Discussion

If the specified file units are open, they are closed prior to the deallocation process.

Example

; Open test.dat file for reading and allocate a logical unit number.

OPENR, log_unit, !Data_dir + 'mandril.img', /Get_lun

; Read the file.

mandril_img = BYTARR(512, 512)

READU, log_unit, mandril_img

; Closes the file and frees the logical unit.

FREE_LUN, log_unit