RSHIFT_RSHFT

 The RSHIFT and RSHFT predeclared functions return a value of the
 same  type  as  its  first  parameter.  The value represents the
 value of the first parameter after the bits have been shifted to
 the right.


 Syntax:

    RSHIFT(expression,expression)
    RSHFT(expression,expression)


 The parameters are two integer or unsigned  values.   The  first
 parameter represents a value to shift; the second represents the
 number of bits to shift the first value.  The RSHIFT  and  RSHFT
 functions insert zero bits on the left as the bits shift right.

 Note that shifting integers is not equivalent to multiplying  or
 dividing  by  a  power  of  two when the value of the integer is
 negative.

 If the number of bits shifted is larger than the natural integer
 size of the target platform, the result is undefined.