std::chrono::duration<Rep,Period>::zero

(C++11)

(C++20)

(C++11)

system_clock (C++11)
steady_clock (C++11)
high_resolution_clock (C++11)

is_clock (C++20)
utc_clock (C++20)
tai_clock (C++20)

gps_clock (C++20)
file_clock (C++20)
local_t (C++20)

is_amis_pm

(C++20)(C++20)

make12make24

(C++20)(C++20)

hh_mm_ss (C++20)

day (C++20)
month (C++20)
year (C++20)
weekday (C++20)
operator/ (C++20)
year_month_day (C++20)

year_month_day_last (C++20)
year_month_weekday (C++20)
year_month_weekday_last (C++20)
weekday_indexed (C++20)
weekday_last (C++20)
month_day (C++20)

month_day_last (C++20)
month_weekday (C++20)
month_weekday_last (C++20)
year_month (C++20)
last_speclast (C++20)(C++20)

tzdb (C++20)
tzdb_list (C++20)
get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)(C++20)(C++20)(C++20)
sys_info (C++20)

local_info (C++20)
nonexistent_local_time (C++20)
ambiguous_local_time (C++20)
locate_zone (C++20)
current_zone (C++20)
time_zone (C++20)
choose (C++20)

zoned_traits (C++20)
zoned_time (C++20)
time_zone_link (C++20)
leap_second (C++20)
leap_second_info (C++20)
get_leap_second_info (C++20)

/ chrono

parse

(C++20)

C

[edit]

`static constexpr duration zero();`		( C++20)
`static constexpr duration zero() noexcept;`		( C++20)

.

rep , - , std::chrono::duration_values .

()

duration(std::chrono::duration_values<rep>::zero())

#include <chrono>
#include <ratio>

template<typename X, typename Y>
using dura = std::chrono::duration<X, Y>;

static_assert
(
    (std::chrono::hours::zero() == std::chrono::nanoseconds::zero()) &&
    (dura<short, std::nano>::zero() == dura<int, std::deci>::zero()) &&
    (dura<short, std::deca>::zero() == dura<long, std::exa>::zero()) &&
    (dura<long, std::atto>::zero().count() == dura<float, std::exa>::zero().count())
);

int main() {}

min [static]	(public static -) []
max [static]	(public static -) []

cppreference.com

std::chrono::duration<Rep,Period>::zero