uint128.hpp

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/*
 * Copyright (c) 2019 BitShares Blockchain Foundation, and contributors.
 *
 * The MIT License
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#pragma once

#ifdef __SIZEOF_INT128__

#include <stdint.h>

namespace fc {

using int128_t  = __int128_t;
using uint128_t = __uint128_t;

inline uint64_t uint128_lo64(const uint128_t x) {
  return static_cast<uint64_t>(x & 0xffffffffffffffffULL);
}
inline uint64_t uint128_hi64(const uint128_t x) {
  return static_cast<uint64_t>( x >> 64 );
}

} // namespace fc

#else // __SIZEOF_INT128__

#include <boost/multiprecision/integer.hpp>

namespace fc {

using boost::multiprecision::int128_t;
using boost::multiprecision::uint128_t;
 
inline uint64_t uint128_lo64(const uint128_t& x) {
  return static_cast<uint64_t>(x & 0xffffffffffffffffULL);
}
inline uint64_t uint128_hi64(const uint128_t& x) {
  return static_cast<uint64_t>( x >> 64 );
}

} // namespace fc

#endif // __SIZEOF_INT128__

namespace fc {

inline uint128_t uint128( const uint64_t hi, const uint64_t lo ) {
   return ( uint128_t(hi) << 64 ) + lo;
}

} // namespace fc