Is it possible to perform all arithmetic operations (+,-,*,/) using Bitwise operations only. Please consider signed numbers also.
Thank You.
Dec 25 '08
14  19134  JosAH 11,448
Recognized Expert MVP @Banfa
You still must have eggnog in your brains ;-) A left shift is a logical shift to the left; a right shift shifts in the sign bit (by definition) if an artithmetic shift is used with a signed int, otherwise a zero bit is shifted in (a logical shift). But you're right: an unsigned shift has always been more 'natural' to me as well ;-)
kind regards,
Jos
Thank you all for your replies. So, from these posts, I think, one can say that there can be different methods for performing the basic arithmetic operations using bit-wise operators on different machines, and therefore it is necessary to know how certain basic bit-wise operations are performed on different platforms before using them in coding. Otherwise it is better to use normal arithmetic operators (+,-,*,/), specially when you want platform-independent code.
Thank you all once again.
Kind Regards.
donbock 2,426
Recognized Expert Top Contributor
It is _always_ better to use normal arithmetic operators to perform arithmetic functions. The exceptions to this simple rule are so exceptional that you're unlikely to ever run into them. @Aftabpasha
Thanks a lot Banfa,
I ment to return x not y.
As you said the platform who provides the operations, we just use.
Josah, your idea is clear using Half-Adder or Full-Adder, and that leads me to ask why Bytes.com have no community for Microprocessors / Microcontroller s ?
It may be replaced to suggestions (Dept.) - if it's correct to say- Thanks anyway,
I get widely help from your (all of you) answers for many questions other put.
Regards for all,
Bassem
Thank you all. Donbock, I'll remember your advice.
Regards,
Aftab
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