Int wrapping multiplication improvements#998
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tarcieri merged 5 commits intoRustCrypto:masterfrom Nov 25, 2025
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## master #998 +/- ##
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- Coverage 79.89% 79.87% -0.02%
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Files 163 163
Lines 17606 17709 +103
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+ Hits 14066 14145 +79
- Misses 3540 3564 +24 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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andrewwhitehead
commented
Nov 12, 2025
| pub const SIGN_MASK: Self = Self::MIN; // Bit sequence (be): 1000....0000 | ||
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| /// All-one bit mask. | ||
| pub const FULL_MASK: Self = Self(Uint::MAX); // Bit sequence (be): 1111...1111 |
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This constant was public, but I can't imagine what it would be needed for, besides the internal usage in calculating MINUS_ONE which has been updated.
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We should probably apply the unreachable_pub lint
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@andrewwhitehead looks like this now has a conflict, possibly from #1008. Can you rebase and I can do another pass on this? |
Signed-off-by: Andrew Whitehead <cywolf@gmail.com>
Signed-off-by: Andrew Whitehead <cywolf@gmail.com>
Signed-off-by: Andrew Whitehead <cywolf@gmail.com>
simplify Int::wrapping_mul and add test Signed-off-by: Andrew Whitehead <cywolf@gmail.com>
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Signed-off-by: Andrew Whitehead <cywolf@gmail.com>
tarcieri
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Nov 25, 2025
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Nov 26, 2025
This reverts commit 75001b2 (#998) We're noticing CI failures on cross which seem to be related to this change, e.g. https://github.com/RustCrypto/crypto-bigint/actions/runs/19647957432/job/56267760132 It looks like it's potentially getting stuck in an infinite loop.
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This optimizes
Int::wrapping_mulandUint::checked_mul_intto make use ofUint::wrapping_mul, and addsInt::saturating_mul.