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AK: Move some time conversion constants into global scope

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These can be useful outside of the scope of the function these are
used.
This commit is contained in:
Shannon Booth 2025-02-07 18:57:16 +13:00 • committed by Sam Atkins
commit 08331f5d62
Notes: github-actions[bot] 2025-02-22 19:10:59 +00:00
1 changed files with 6 additions and 6 deletions
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12
AK/Time.h
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@ -24,6 +24,12 @@ struct timeval {
namespace AK { namespace AK {
constexpr inline double ms_per_day = 86'400'000;
constexpr inline double seconds_per_day = 86'400;
constexpr inline double seconds_per_year = 60.0 * 60.0 * 24.0 * 365.2425;
constexpr inline auto seconds_per_hour = 3'600;
constexpr inline auto seconds_per_minute = 60;
// Concept to detect types which look like timespec without requiring the type. // Concept to detect types which look like timespec without requiring the type.
template<typename T> template<typename T>
concept TimeSpecType = requires(T t) { concept TimeSpecType = requires(T t) {
@ -121,8 +127,6 @@ constexpr i64 days_since_epoch(int year, int month, int day)
constexpr i64 seconds_since_epoch_to_year(i64 seconds) constexpr i64 seconds_since_epoch_to_year(i64 seconds)
{ {
constexpr double seconds_per_year = 60.0 * 60.0 * 24.0 * 365.2425;
// NOTE: We are not using floor() from <math.h> to avoid LibC / DynamicLoader dependency issues. // NOTE: We are not using floor() from <math.h> to avoid LibC / DynamicLoader dependency issues.
auto round_down = [](double value) -> i64 { auto round_down = [](double value) -> i64 {
auto as_i64 = static_cast<i64>(value); auto as_i64 = static_cast<i64>(value);
@ -379,10 +383,6 @@ public:
// Note that the returned time is probably not equivalent to the same timestamp in UTC time, since UNIX time does not observe leap seconds. // Note that the returned time is probably not equivalent to the same timestamp in UTC time, since UNIX time does not observe leap seconds.
[[nodiscard]] constexpr static UnixDateTime from_unix_time_parts(i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond) [[nodiscard]] constexpr static UnixDateTime from_unix_time_parts(i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond)
{ {
constexpr auto seconds_per_day = 86'400;
constexpr auto seconds_per_hour = 3'600;
constexpr auto seconds_per_minute = 60;
i64 days = days_since_epoch(year, month, day); i64 days = days_since_epoch(year, month, day);
// With year=2'147'483'648, we can end up with days=569'603'931'504. // With year=2'147'483'648, we can end up with days=569'603'931'504.
// Expressing that in milliseconds would require more than 64 bits, // Expressing that in milliseconds would require more than 64 bits,