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Intrinsic_Functions

 VSI Fortran allows certain intrinsic functions for compatibility
 with FORTRAN for RISC.  The following list shows these functions
 and their equivalents:

    Function    Equivalent Function
    --------    -------------------
    AND         IAND 
    OR          IOR
    XOR         IEOR
    LSHIFT      ISHFT with a positive second argument
    RSHIFT      ISHFT with a negative second argument