ole_automation_conversions.hpp File Reference

OLE Automation Date (OA date) conversions. More...

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Namespaces
namespace	time_shield
	Main namespace for the Time Shield library.

Functions
TIME_SHIELD_CONSTEXPR oadate_t	time_shield::ts_to_oadate (ts_t ts) noexcept
	Convert Unix timestamp (seconds) to OA date.
TIME_SHIELD_CONSTEXPR oadate_t	time_shield::fts_to_oadate (fts_t ts) noexcept
	Convert Unix timestamp (floating seconds) to OA date.
TIME_SHIELD_CONSTEXPR oadate_t	time_shield::ts_ms_to_oadate (ts_ms_t ts_ms) noexcept
	Convert Unix timestamp (milliseconds) to OA date.
TIME_SHIELD_CONSTEXPR ts_t	time_shield::oadate_to_ts (oadate_t oa) noexcept
	Convert OA date to Unix timestamp (seconds).
TIME_SHIELD_CONSTEXPR fts_t	time_shield::oadate_to_fts (oadate_t oa) noexcept
	Convert OA date to Unix timestamp (floating seconds).
TIME_SHIELD_CONSTEXPR ts_ms_t	time_shield::oadate_to_ts_ms (oadate_t oa) noexcept
	Convert OA date to Unix timestamp (milliseconds).
template<class T1, class T2, class T3>
TIME_SHIELD_CONSTEXPR oadate_t	time_shield::to_oadate (T1 year, T2 month, T2 day, T2 hour=0, T2 min=0, T2 sec=0, T3 ms=0) noexcept
	Build OA date from calendar components (Gregorian).

Detailed Description

OLE Automation Date (OA date) conversions.

OA date is a floating-point day count where:

• 0.0 is 1899-12-30 00:00:00
• the integer part is days offset from that date
• the fractional part is time-of-day / 24

This header provides conversions between OA date and:

• Unix timestamps in seconds (ts_t)
• Unix timestamps in milliseconds (ts_ms_t)
• floating seconds (fts_t)

Definition in file ole_automation_conversions.hpp.