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C Language > Learn C Language > Is it better to bitshift a value than to multiply by 2?
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Is it better to bitshift a value than to multiply by 2?

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Programming Languages & Electronics Tutor.

yes in bitshifting operation, u know the shifting position of bit
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Software Professional Trainer with 26+ years of Experience in Software Design and Development

yes, Bitshift will be fast process when compare to arithemetic operation. In order to multiply you need to use right shift.
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Programming Trainer

Bitshift will increase time complexity in comparison with to multiply by 2. As usually the literals are represented by at least 8 bits (ASCII). Therefore, at least 8 iterations will perform one task which is far more than multiplication statement.
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10 Yrs Exp ,C,C++ ,Python Programming & Computer Subjects(BCA,MCA & B.Tech)

no not necessary ,don't focus on such optimization compiler will take care of it.
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GATE Qualified

Yes, bitshift is faster than multiplication and division which follows algorithm that is booth's multiplication.
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