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POSIX.1-2008 has marked gettimeofday(2) as obsolete, recommending the use of clock_gettime(2) instead. CLOCK_MONOTONIC has been used instead of CLOCK_REALTIME because it is unaffected by manual changes in the system clock. This makes it better for our purposes, namely, measuring the difference between two points in time. tv_sec has been casted to long in most places since POSIX does not define the actual type of time_t.
28 lines
582 B
C
28 lines
582 B
C
#include "misc.h"
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#include <wctype.h>
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bool
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isword(wchar_t wc, bool spaces_only, const wchar_t *delimiters)
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{
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if (spaces_only)
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return iswgraph(wc);
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if (wcschr(delimiters, wc) != NULL)
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return false;
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return iswgraph(wc);
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}
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void
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timespec_sub(const struct timespec *a, const struct timespec *b,
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struct timespec *res)
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{
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res->tv_sec = a->tv_sec - b->tv_sec;
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res->tv_nsec = a->tv_nsec - b->tv_nsec;
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/* tv_nsec may be negative */
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if (res->tv_nsec < 0) {
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res->tv_sec--;
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res->tv_nsec += 1000 * 1000 * 1000;
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}
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}
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