C Date and time utilities
Functions
Time manipulation |
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Defined in header <ctime> |
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| computes the difference between times (function) |
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| returns the current time of the system as time since epoch (function) |
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| returns raw processor clock time since the program is started (function) |
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(C++17) | returns the calendar time in seconds and nanoseconds based on a given time base (function) |
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(C++26) | returns the resolution of calendar time based on a given time base (function) |
Format conversions |
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Defined in header <ctime> |
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(deprecated in C++26) | converts a std::tm object to a textual representation (function) |
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(deprecated in C++26) | converts a std::time_t object to a textual representation (function) |
converts a std::tm object to custom textual representation (function) |
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Defined in header <cwchar> |
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converts a std::tm object to custom wide string textual representation (function) |
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Defined in header <ctime> |
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(C++26) | converts time since epoch to calendar time expressed as Universal Coordinated Time (function) |
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(C++26) | converts time since epoch to calendar time expressed as local time (function) |
| converts calendar time to time since epoch (function) |
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(C++26) | converts calendar time to time since epoch, ignoring the Daylight Saving Time flag (function) |
Constants
Defined in header <ctime> |
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| number of processor clock ticks per second (macro constant) |
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Types
Defined in header <ctime> |
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| calendar time type (class) |
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| time since epoch type (typedef) |
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| process running time (typedef) |
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(C++17) | time in seconds and nanoseconds (struct) |
See also
| C documentation for Date and time utilities |
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