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Move Neg impl into the macro that generates Div and Rem

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This commit is contained in:
David Tolnay 2023-12-05 21:50:14 -08:00
parent f846ed53e4
commit 757ed25667
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1 changed files with 20 additions and 20 deletions
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40
library/core/src/num/nonzero.rs
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@ -253,15 +253,12 @@ macro_rules! nonzero_integer {
}
}
nonzero_integer_impl_div_rem!($Ty $signedness $Int);
nonzero_integer_signedness_dependent_impls!($Ty $signedness $Int);
};
}
macro_rules! nonzero_integer_impl_div_rem {
($Ty:ident signed $Int:ty) => {
// nothing for signed ints
};
macro_rules! nonzero_integer_signedness_dependent_impls {
// Impls for unsigned nonzero types only.
($Ty:ident unsigned $Int:ty) => {
#[stable(feature = "nonzero_div", since = "1.51.0")]
impl Div<$Ty> for $Int {
@ -288,6 +285,23 @@ macro_rules! nonzero_integer_impl_div_rem {
}
}
};
// Impls for signed nonzero types only.
($Ty:ident signed $Int:ty) => {
#[stable(feature = "signed_nonzero_neg", since = "1.71.0")]
impl Neg for $Ty {
type Output = $Ty;
#[inline]
fn neg(self) -> $Ty {
// SAFETY: negation of nonzero cannot yield zero values.
unsafe { $Ty::new_unchecked(self.get().neg()) }
}
}
forward_ref_unop! { impl Neg, neg for $Ty,
#[stable(feature = "signed_nonzero_neg", since = "1.71.0")] }
};
}
// A bunch of methods for unsigned nonzero types only.
@ -921,20 +935,6 @@ macro_rules! nonzero_signed_operations {
unsafe { $Ty::new_unchecked(result) }
}
}
#[stable(feature = "signed_nonzero_neg", since = "1.71.0")]
impl Neg for $Ty {
type Output = $Ty;
#[inline]
fn neg(self) -> $Ty {
// SAFETY: negation of nonzero cannot yield zero values.
unsafe { $Ty::new_unchecked(self.get().neg()) }
}
}
forward_ref_unop! { impl Neg, neg for $Ty,
#[stable(feature = "signed_nonzero_neg", since = "1.71.0")] }
)+
}
}