Arguments

 

position

   OpenVMS usage:longword_signed
   type:         longword integer (signed)
   access:       read only
   mechanism:    by reference

   Bit position, relative to bit-zero-address, of the bit that
   LIB$BBSSI tests and sets. The position argument is the address
   of a signed longword integer containing the bit position. A
   position of zero denotes the low-order bit of the byte base. The
   bit position is equal to the offset of the bit chosen from the
   base position. This offset may span the entire range of a signed
   longword integer; negative offsets access bits in lower addressed
   bytes.
 

bit-zero-address

   OpenVMS usage:unspecified
   type:         address
   access:       read only
   mechanism:    by value

   Address of the byte containing bit 0 of the field that LIB$BBSSI
   references. The bit-zero-address argument is the location of the
   base position. The bit that LIB$BBSSI tests and sets is position
   bits offset from the low bit of bit-zero-address.