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Implement Sum/Product traits

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Caleb Zulawski 2021-06-13 17:52:44 +00:00
parent 57e67c905f
commit bdcccba55c
2 changed files with 53 additions and 0 deletions
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52
crates/core_simd/src/iter.rs Normal file
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@ -0,0 +1,52 @@
macro_rules! impl_traits {
{ $type:ident, $scalar:ty } => {
impl<const LANES: usize> core::iter::Sum<Self> for crate::$type<LANES>
where
Self: crate::LanesAtMost32,
{
fn sum<I: core::iter::Iterator<Item = Self>>(iter: I) -> Self {
iter.fold(Default::default(), core::ops::Add::add)
}
}
impl<const LANES: usize> core::iter::Product<Self> for crate::$type<LANES>
where
Self: crate::LanesAtMost32,
{
fn product<I: core::iter::Iterator<Item = Self>>(iter: I) -> Self {
iter.fold(Default::default(), core::ops::Mul::mul)
}
}
impl<const LANES: usize> core::iter::Sum<crate::$type<LANES>> for $scalar
where
crate::$type<LANES>: crate::LanesAtMost32,
{
fn sum<I: core::iter::Iterator<Item = crate::$type<LANES>>>(iter: I) -> Self {
iter.sum::<crate::$type<LANES>>().horizontal_sum()
}
}
impl<const LANES: usize> core::iter::Product<crate::$type<LANES>> for $scalar
where
crate::$type<LANES>: crate::LanesAtMost32,
{
fn product<I: core::iter::Iterator<Item = crate::$type<LANES>>>(iter: I) -> Self {
iter.product::<crate::$type<LANES>>().horizontal_product()
}
}
}
}
impl_traits! { SimdF32, f32 }
impl_traits! { SimdF64, f64 }
impl_traits! { SimdU8, u8 }
impl_traits! { SimdU16, u16 }
impl_traits! { SimdU32, u32 }
impl_traits! { SimdU64, u64 }
impl_traits! { SimdUsize, usize }
impl_traits! { SimdI8, i8 }
impl_traits! { SimdI16, i16 }
impl_traits! { SimdI32, i32 }
impl_traits! { SimdI64, i64 }
impl_traits! { SimdIsize, isize }

1
crates/core_simd/src/lib.rs
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@ -22,6 +22,7 @@ pub use to_bytes::ToBytes;
mod comparisons;
mod fmt;
mod intrinsics;
mod iter;
mod ops;
mod round;