IBITS
Platform  x64, Win32, .NET 
Purpose 
To extract a sequence of bits. 
Class 
Elemental function. 
Syntax 
INTEGER FUCNTION IBITS(I, POS, LEN)
INTEGER I, POS, LEN 
Description 
The position POS is nonnegative with zero as the least significant bit. The
length of the sequence LEN is nonnegative. The result has the same kind type
as I. 
Return value 
The result has the value of the sequence of LEN bits in I beginning at bit POS,
rightadjusted with all other bits zero. 

