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Invert comparison in uN::checked_sub #125038

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Merged
merged 1 commit into from
May 15, 2024
Merged

Invert comparison in uN::checked_sub #125038

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6 changes: 3 additions & 3 deletions library/core/src/num/uint_macros.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -584,11 +584,11 @@ macro_rules! uint_impl {
// Thus, rather than using `overflowing_sub` that produces a wrapping
// subtraction, check it ourself so we can use an unchecked one.

if self >= rhs {
if self < rhs {
None
} else {
// SAFETY: just checked this can't overflow
Some(unsafe { intrinsics::unchecked_sub(self, rhs) })
} else {
None
}
}

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