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From: Sanny <softtanks22@hotmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Java left shift and right shift operators.
Date: Tue, 26 Apr 2011 02:04:23 -0700 (PDT)
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> Is there any way to avoid the if condition and do right shift and left
> shift using operators depending on shiftby is +ve or -ve?

I used below technique but it gives error.

divider=Math.pow(2,shiftby);
then
output = (long) N / divider;

This works for most cases but failed when output is greater than
9223372036854775807


N="9223372036854775807"; and shift by (-3);

long output=(long)(9223372036854775807 / 0.125);

The answer is "-1";

binary Value:
111111111111111111111111111111111111111111111111111111111111111

While correct answer is :
1000000000000000000000000000000000000000000000000000000000000000

It is because "long" is 64 bit signed variable. Can I get unsigned
Long?

Or bigger than long variable? So that 64 bit shifts can be done
easily?

Bye
Sanny

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