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feat: return microseconds with sub-µs precision from monotonic_clock_stop #1

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Merged
Guest0x0 merged 3 commits into from
Apr 7, 2026
Merged

feat: return microseconds with sub-µs precision from monotonic_clock_stop #1

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64d1a15
feat: return nanoseconds from monotonic_clock_stop
bikallem Apr 1, 2026
032c4dc
fix: avoid int64 overflow in Windows ns conversion
bikallem Apr 1, 2026
e5e0c69
feat: return microseconds with sub-µs precision from monotonic_clock_…
bikallem Apr 3, 2026
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8 changes: 4 additions & 4 deletions runtime.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2210,8 +2210,8 @@ MOONBIT_EXPORT double moonbit_monotonic_clock_stop(void *prev) {
(void)QueryPerformanceFrequency(&freq);

struct timestamp *ts = (struct timestamp *)prev;
return (double)((counter.QuadPart - ts->ts.QuadPart) * 1000000) /
freq.QuadPart;
return (double)(counter.QuadPart - ts->ts.QuadPart) /
(double)freq.QuadPart * 1e6;
}

MOONBIT_FFI_EXPORT
Expand Down Expand Up @@ -2243,8 +2243,8 @@ MOONBIT_EXPORT double moonbit_monotonic_clock_stop(void *prev) {
if (0 != clock_gettime(MOONBIT_CLOCK_MONOTONIC, &ts))
return NAN;
struct timespec *ts0 = &(((struct timestamp *)prev)->ts);
return (double)((ts.tv_sec - ts0->tv_sec) * 1000000) +
(double)(ts.tv_nsec - ts0->tv_nsec) / 1000.0;
return (double)(ts.tv_sec - ts0->tv_sec) * 1000000 +
(double)(ts.tv_nsec - ts0->tv_nsec) * 0.001;
}

MOONBIT_FFI_EXPORT
Expand Down