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Incorrect `f32::NAN as u64/u128` conversion #75

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The code generated for black_box(f32::NAN) as u64/u128 converts it to some junk, but correct result is 0. This happens only with f32::NAN and only when converted to u64/u128. Conversion into i64/i128 works fine, as well as conversions intou8, i8, ... u32,i32.

antoyo
added
bugSomething isn't working
on Oct 31, 2021
antoyo commented on Feb 1, 2022
antoyo
on Feb 1, 2022
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This is because gcc gives a negative NAN for 0.0 / 0.0.

Does Rust define that the sign of NAN should be positive?

Possibly relevant: rust-lang/rust#81261
RalfJung commented on Feb 20, 2022
RalfJung
on Feb 20, 2022
Member
rust-lang/rust#55131 also seems very relevant.
antoyo
closed this as completedin #627 on Feb 12, 2025

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