C Date and time utilities

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C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Date and time utilities
Time point
(C++11)
(C++20)
Duration
(C++11)
Clocks
(C++20)
(C++20)
(C++20)
Time of day
(C++20) (C++20)
(C++20) (C++20)
(C++20)

Calendar
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
Time zone
(C++20)
(C++20)
(C++20) (C++20) (C++20) (C++20)
(C++20)
chrono I/O
(C++20)
C-style date and time
C-style date and time utilities

Functions

Defined in header <ctime>
Time manipulation
computes the difference between times
(function)
returns the current time of the system as time since epoch
(function)
returns raw processor clock time since the program is started
(function)
(C++17)
returns the calendar time in seconds and nanoseconds based on a given time base
(function)
Format conversions
converts a std::tm object to a textual representation
(function)
converts a std::time_t object to a textual representation
(function)
converts a std::tm object to custom textual representation
(function)
converts a std::tm object to custom wide string textual representation
(function)
converts time since epoch to calendar time expressed as Universal Coordinated Time
(function)
converts time since epoch to calendar time expressed as local time
(function)
converts calendar time to time since epoch
(function)

Constants

number of processor clock ticks per second
(macro constant)

Types

calendar time type
(class)
time since epoch type
(typedef)
process running time
(typedef)
(C++17)
time in seconds and nanoseconds
(struct)

See also

C documentation for Date and time utilities
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