Arguments

 

position

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

   Position (relative to the base address) of the first bit in
   the field that LIB$EXTV extracts. The position argument is the
   address of a signed longword integer containing the position.
 

size

   OpenVMS usage:byte_unsigned
   type:         byte (unsigned)
   access:       read only
   mechanism:    by reference

   Size of the bit field LIB$EXTV extracts. The size argument is the
   address of an unsigned byte containing the size. The maximum size
   is 32 bits.
 

base-address

   OpenVMS usage:longword_unsigned
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value

   Base address of the bit field LIB$EXTV extracts from the
   specified variable bit field. The base-address argument is an
   unsigned longword containing the base address.