if a.abs()+b.abs() >= (a-b).abs() * 2f64.powi(48)
It remains accurate for small and for big numbers. 48 is slightly less than 52.
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if a.abs()+b.abs() >= (a-b).abs() * 2f64.powi(48)
It remains accurate for small and for big numbers. 48 is slightly less than 52.