Let’s say I want to bit shift i twice to the left and store the value in f.
f = i << 2;
Is that correct? How exactly do I do this in C/C++?
Let’s say I want to bit shift i twice to the left and store
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Let’s say I want to bit shift i twice to the left and store the value in f.
f = i << 2;
Is that correct? How exactly do I do this in C/C++?
Yes.
Shifts are useful in a number of bit twiddling operations.
This used to be a great way to multiply a number by four. However, these days, optimizing compilers tend to take care of that for you.
Keep in mind that the two leftmost bits are discarded.