VMS Help  —  RTL Routines, LIB$  LIB$BBSSI
    The Test and Set Bit with Interlock routine tests and sets a
    selected bit under memory interlock. LIB$BBSSI makes the VAX
    BBSSI instruction available as a callable routine.

    Format

      LIB$BBSSI  position ,bit-zero-address
Additional Information: explode extract
Returns Arguments
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