Function Decode

pkg/util/duration/duration.go:401–406

Decode reverses the three integers returned from Encode and produces an equal Duration to the original.

(sortNanos int64, months int64, days int64)

// Decode reverses the three integers returned from Encode and produces an equal
// Duration to the original.
func Decode(sortNanos int64, months int64, days int64) (Duration, error) {
	nanos := sortNanos - months*nanosInMonth - days*nanosInDay
	// TODO(dan): Handle underflow, then document that DecodeBigInt can be used
	// in underflow cases.
	return Duration{Months: months, Days: days, nanos: nanos}, nil
}

// TODO(dan): Write DecodeBigInt.