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Date and time
The time.h header file provides access to the computer system clock, date and time conversion functions, and formatting functions.
Three data types are defined in time.h: clock_t, time_t, and tm.
The clock_t type is a numeric, system dependent type returned by the clock() function.
The time_t type is a system dependent type used to represent a calendar date and time.
NOTE
The ANSI/ISO C Standard does not specify a start date, therefore an arbitrarily chosen Jan. 1, 1970 is used for the MSL C Library. These routines are not meant to be intermixed with any specific API time functions. However some conversion constants are available in the OS specific headers (e.g. time.mac.h).
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Last updated: August 16, 2000