popcount.hpp

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/*
 * Copyright (c) 2019 BitShares Blockchain Foundation, and contributors.
 *
 * The MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 */
 
#pragma once
 
#include <fc/platform_independence.hpp>
#include <fc/uint128.hpp>
 
namespace fc {
 
#if _MSC_VER || __GNUC__ || __clang__
inline uint8_t popcount( uint64_t v ) { return __builtin_popcountll(v); }
#else
uint8_t popcount( uint64_t v );
#endif
 
uint8_t popcount( const fc::uint128_t& v );
 
} // namespace fc