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Improve quality of our ANSI C clock() function

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It now works most excellently across all supported operating
sytsems (earlier it didn't work on NT and XNU). Demo code is
available in examples/clock.c and this change also adds some
of the newer ANSI C time functions like timespec_get(), plus
timespec_getres() which hasn't even come out yet as it's C23
This commit is contained in:
Justine Tunney 2022-09-05 21:43:49 -07:00
parent 7ff0ea8c13
commit 12d9e1e128
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GPG key ID: BE714B4575D6E328
24 changed files with 254 additions and 76 deletions
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5
libc/time/time.h
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@ -1,5 +1,9 @@
#ifndef COSMOPOLITAN_LIBC_TIME_TIME_H_
#define COSMOPOLITAN_LIBC_TIME_TIME_H_
#define TIME_UTC 1
#define CLOCKS_PER_SEC 1000000L
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -10,7 +14,6 @@ hidden extern const char kMonthName[12][10];
hidden extern const unsigned short kMonthYearDay[2][12];
extern char *tzname[2];
extern long CLOCKS_PER_SEC;
extern long timezone;
extern int daylight;