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add TODO
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Robin Müller 2022-12-21 01:03:26 +01:00
parent 3828a98c76
commit 14fa1bad92
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src/time/cuc.rs
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@ -73,6 +73,8 @@ pub fn fractional_part_from_subsec_ns(
// invalid fractional parts which are too large. For the division of the nanoseconds by the // invalid fractional parts which are too large. For the division of the nanoseconds by the
// smallest fraction, a flooring division is correct. // smallest fraction, a flooring division is correct.
// The multiplication with 100000 is necessary to avoid precision loss during integer division. // The multiplication with 100000 is necessary to avoid precision loss during integer division.
// TODO: Floating point division might actually be faster option, but requires additional
// code on small embedded systems..
let fractional_part = ns * 100000 / ((sec_as_ns * 100000 + resolution) / resolution); let fractional_part = ns * 100000 / ((sec_as_ns * 100000 + resolution) / resolution);
Some(FractionalPart(res, fractional_part as u32)) Some(FractionalPart(res, fractional_part as u32))
} }