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clock: Bug fix: Use float64 not to overflow

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Bug: #862
This commit is contained in:
Hajime Hoshi 2019-05-09 01:14:46 +09:00
parent 93426fd84e
commit c65d035cc9
1 changed files with 3 additions and 1 deletions
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4
internal/clock/now_windows.go
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@ -58,5 +58,7 @@ var (
func now() int64 { func now() int64 {
// Use the time duration instead of the current counter to avoid overflow. // Use the time duration instead of the current counter to avoid overflow.
duration := queryPerformanceCounter() - initCtr duration := queryPerformanceCounter() - initCtr
return (duration * 1e9) / freq
// Use float64 not to overflow int64 values (#862).
return int64(float64(duration) / float64(freq) * 1e9)
} }