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zio_check_filedesc

INTERFACE: 

         integer function zio_check_filedesc(filedesc)
DESCRIPTION:

Checks whether filedesc is a valid file descriptor.

REVISION HISTORY: 

       2003-Jan-31 -- first prototype
USES: 
         implicit none
INPUT PARAMETERS: 
         integer, intent(in) :: filedesc

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Yun (Helen) He
Tue Dec 9 16:16:02 PST 2003