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C Date and time utilities

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< cpp‎ | chrono

Compiler support

Freestanding and hosted

Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Diagnostics library

Memory management library

Metaprogramming library (C++11)

General utilities library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Strings library

Text processing library

Numerics library

Date and time library

Input/output library

Filesystem library (C++17)

Concurrency support library (C++11)

Execution control library (C++26)

Technical specifications

External libraries

Date and time library

(C++11)

clock_time_conversion

(C++20)

(C++20)

(C++11)

(C++11)

(C++11)

(C++20)

(C++20)

(C++20)

high_resolution_clock

(C++11)

(C++20)

(C++20)

(C++20)

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

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

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

year_month_day_last

(C++20)

year_month_weekday

(C++20)

year_month_weekday_last

(C++20)

weekday_indexed

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

month_weekday_last

(C++20)

(C++20)

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

(C++20)

(C++20)

(C++20)

get_tzdbget_tzdb_listreload_tzdbremote_version

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

(C++20)

(C++20)

nonexistent_local_time

(C++20)

ambiguous_local_time

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

(C++20)

leap_second_info

(C++20)

get_leap_second_info

(C++20)

C-style date and time

C-style date and time utilities

Functions

Time manipulation

(C++17)

Format conversions

Constants

Types

(C++17)

Contents

[edit] Functions

Defined in header <ctime>

Time manipulation

computes the difference between times
(function) [edit]

returns the current time of the system as time since epoch
(function) [edit]

returns raw processor clock time since the program is started
(function) [edit]

(C++17)

returns the calendar time in seconds and nanoseconds based on a given time base
(function) [edit]

Format conversions

converts a std::tm object to a textual representation
(function) [edit]

converts a std::time_t object to a textual representation
(function) [edit]

converts a std::tm object to custom textual representation
(function) [edit]

converts a std::tm object to custom wide string textual representation
(function) [edit]

converts time since epoch to calendar time expressed as Universal Coordinated Time
(function) [edit]

converts time since epoch to calendar time expressed as local time
(function) [edit]

converts calendar time to time since epoch
(function) [edit]

[edit] Constants

number of processor clock ticks per second
(macro constant) [edit]

[edit] Types

calendar time type
(class) [edit]

time since epoch type
(typedef) [edit]

process running time
(typedef) [edit]

(C++17)

time in seconds and nanoseconds
(struct)[edit]

[edit] See also

C documentation for Date and time utilities

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