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37 lines
805 B
C++
37 lines
805 B
C++
#ifndef LLARP_BITS_HPP
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#define LLARP_BITS_HPP
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#include <cstddef>
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namespace llarp
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{
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namespace bits
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{
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template < typename Int_t >
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constexpr std::size_t
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count_bits(const Int_t& i)
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{
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return i == 0 ? 0
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: ((i & 0x01) == 0x01) ? 1UL + count_bits(i >> 1)
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: count_bits(i >> 1);
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}
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template < typename T >
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constexpr std::size_t
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__count_array_bits(const T& array, std::size_t idx)
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{
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return idx < sizeof(T)
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? count_bits(array[idx]) + __count_array_bits(array, idx + 1)
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: 0;
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}
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template < typename T >
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constexpr std::size_t
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count_array_bits(const T& array)
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{
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return __count_array_bits(array, 0);
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}
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} // namespace bits
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} // namespace llarp
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#endif
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