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// license:GPL-2.0+
// copyright-holders:Couriersud
#if 0
#include "pchrono.h"
namespace plib {
namespace chrono {
#if defined(__x86_64__) && !defined(_clang__) && !defined(_MSC_VER) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 6))
template <typename T>
auto per_sec() -> typename T :: type
{
using ret_type = typename T :: type;
static ret_type persec = 0;
if (persec == 0)
{
ret_type x = 0;
system_ticks::type t = system_ticks::start();
system_ticks::type e;
x = - T :: start();
do {
e = system_ticks::stop();
} while (e - t < system_ticks::per_second() / 100 );
x += T :: stop();
persec = (ret_type)(double)((double) x * (double) system_ticks::per_second() / double (e - t));
}
return persec;
}
fast_ticks::type fast_ticks::per_second()
{
#if 1
return per_sec<fast_ticks>();
#else
static type persec = 0;
if (persec == 0)
{
type x = 0;
system_ticks::type t = system_ticks::start();
system_ticks::type e;
x = -start();
do {
e = system_ticks::stop();
} while (e - t < system_ticks::per_second() / 100 );
x += stop();
persec = (type)(double)((double) x * (double) system_ticks::per_second() / double (e - t));
}
return persec;
#endif
}
#if PUSE_ACCURATE_STATS && PHAS_RDTSCP
exact_ticks::type exact_ticks::per_second()
{
static type persec = 0;
if (persec == 0)
{
type x = 0;
system_ticks::type t = system_ticks::start();
system_ticks::type e;
x = -start();
do {
e = system_ticks::stop();
} while (e - t < system_ticks::per_second() / 100 );
x += stop();
persec = (type)(double)((double) x * (double) system_ticks::per_second() / double (e - t));
}
return persec;
}
#endif
#endif
} // namespace chrono
} // namespace plib
#endif
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