COMPUTE DATE

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COMPUTE DATE

            [SIC\]COMPUTE Modification_Date DATE Filename

        Return the last modification date of the file Filename into the  integer
        variable  Modification_Date.  Used  in procedures to check when file has
        last been changed.

        If the output variable is a 4-bytes integer (Fortran I*4), returned val-
        ue is in seconds since 01-jan-1970. If the variable is a 8-bytes integer
        (Fortran I*8), returned value is in nanoseconds  since  01-jan-1970.  In
        the latter case, your system (e.g. Linux >= 2.5.48) AND filesystem (e.g.
        ext4) must support timestamp granularity below the second. If not, value
        precision is limited to 1 second.