| Defined in header |
#define CLOCKS_PER_SEC /*implementation defined*/
CLOCKS_PER_SEC as one million, regardless of the actual precision of
Until standardized as
CLOCKS_PER_SEC in C89, this macro was sometimes known by its IEEE std 1003.1-1988 name
CLK_TCK: that name was not included in C89 and was removed from POSIX itself in 1996 over ambiguity with
_SC_CLK_TCK, which gives number of clocks per second for the function times()).
| returns raw processor clock time since the program is started
| processor time since era type
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