Limb: optimize constant-time comparisons #413
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Optimizes `ConstantTimeGreater`/`ConstantTimeLess` impls by using
borrowing subtraction and checking whether a borrow occurred.
ops/ct_lt time: [900.95 ps 909.83 ps 922.37 ps]
change: [-76.095% -75.752% -75.373%] (p = 0.00 < 0.05)
Performance has improved.
ops/ct_gt time: [902.46 ps 938.83 ps 1.0134 ns]
change: [-55.763% -53.637% -50.192%] (p = 0.00 < 0.05)
Performance has improved.
Contributor
|
Is it a better algorithm than the one used in |
Member
Author
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Definitely worth comparing options, as this is a major bottleneck for #415 |
Contributor
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Filed #418 |
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Optimizes
ConstantTimeGreater/ConstantTimeLessimpls by using borrowing subtraction and checking whether a borrow occurred.Benchmarks