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C Language > Learn C Language > Is there any reason to use bitwise operations such...
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Is there any reason to use bitwise operations such as 'n<< 1' rather than just 'n * 2'? Isn't the compiler in charge of such optimizations?

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Yes, its better to use bitwise operations. But this also depends on the programmers context of use because with modern compilers on modern architectures, there is generally no difference in performance.
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Well, you have already answered your question. Since you know n<<1 is already an optimized version of n*2. So basically if you use this in your code, there wont be any further conversion from n*2 to n<<1. And yes, Compiler may do such optimization but if you already using it in your code...
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Well, you have already answered your question. Since you know n<<1 is already an optimized version of n*2. So basically if you use this in your code, there wont be any further conversion from n*2 to n<<1. And yes, Compiler may do such optimization but if you already using it in your code before hand, your program will run faster. read less
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