C++
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- Bit Manipulation Application: Small to Capital Letter
- Changing the nth bit to x
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Date and time using
header - decltype
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C++ Bit Manipulation Remove rightmost set bit
Example
C-style bit-manipulation
template <typename T>
T rightmostSetBitRemoved(T n)
{
// static_assert(std::is_integral<T>::value && !std::is_signed<T>::value, "type should be unsigned"); // For c++11 and later
return n & (n - 1);
}
Explanation
- if
nis zero, we have0 & 0xFF..FFwhich is zero - else
ncan be written0bxxxxxx10..00andn - 1is0bxxxxxx011..11, son & (n - 1)is0bxxxxxx000..00.
