VMS Help RTL Routines, LIB$, LIB$BBSSI  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    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) :

• Returns
• Arguments