This header was originally in the C standard library as <time.h>.
This header is part of the C-style date and time library.
| number of processor clock ticks per second (macro constant) |
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| implementation-defined null pointer constant (macro constant) |
| process running time (typedef) |
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unsigned integer type returned by the sizeof operator (typedef) |
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| time since epoch type (typedef) |
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| calendar time type (class) |
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(since C++17) | time in seconds and nanoseconds (struct) |
Time manipulation |
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| returns raw processor clock time since the program is started (function) |
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| returns the current time of the system as time since epoch (function) |
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| computes the difference between times (function) |
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(since C++17) | returns the calendar time based on a given time base (function) |
Format conversions |
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converts a time_t object to a textual representation (function) |
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converts a tm object to a textual representation (function) |
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converts a tm object to custom textual representation (function) |
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| converts a tm object to custom wide string textual representation (function) |
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| converts time since epoch to calendar time expressed as Universal Coordinated Time (function) |
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| converts time since epoch to calendar time expressed as local time (function) |
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| converts calendar time to time since epoch (function) |
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#define NULL /* see definition */
#define CLOCKS_PER_SEC /* see definition */
#define TIME_UTC /* see definition */
namespace std {
using size_t = /* see definition */;
using clock_t = /* see definition */;
using time_t = /* see definition */;
struct timespec;
struct tm;
clock_t clock();
double difftime(time_t time1, time_t time0);
time_t mktime(struct tm* timeptr);
time_t time(time_t* timer);
int timespec_get(timespec* ts, int base);
char* asctime(const struct tm* timeptr);
char* ctime(const time_t* timer);
struct tm* gmtime(const time_t* timer);
struct tm* localtime(const time_t* timer);
size_t strftime(char* s, size_t maxsize, const char* format, const struct tm* timeptr);
}
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