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// license:BSD-3-Clause
// copyright-holders:Vas Crabb, Nathan Woods
/***************************************************************************
timeconv.h
Time conversion utility code
***************************************************************************/
#ifndef MAME_LIB_UTIL_TIMECONV_H
#define MAME_LIB_UTIL_TIMECONV_H
#pragma once
#include "osdcore.h"
#include <chrono>
namespace util {
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef std::chrono::duration<std::uint64_t, std::ratio<1, 10000000> > ntfs_duration;
/***************************************************************************
INLINE FUNCTIONS
***************************************************************************/
// -------------------------------------------------
// ntfs_duration_from_filetime
// -------------------------------------------------
inline constexpr ntfs_duration ntfs_duration_from_filetime(std::uint32_t high, std::uint32_t low)
{
return ntfs_duration((std::uint64_t(high) << 32) | std::uint64_t(low));
}
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
std::chrono::system_clock::time_point system_clock_time_point_from_ntfs_duration(ntfs_duration d);
} // namespace util
#endif // MAME_LIB_UTIL_TIMECONV_H
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