Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/library/portable-simd/crates/core_simd/src/iter.rs b/library/portable-simd/crates/core_simd/src/iter.rs
new file mode 100644
index 000000000..3275b4db8
--- /dev/null
+++ b/library/portable-simd/crates/core_simd/src/iter.rs
@@ -0,0 +1,58 @@
+use crate::simd::{LaneCount, Simd, SupportedLaneCount};
+use core::{
+    iter::{Product, Sum},
+    ops::{Add, Mul},
+};
+
+macro_rules! impl_traits {
+    { $type:ty } => {
+        impl<const LANES: usize> Sum<Self> for Simd<$type, LANES>
+        where
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            fn sum<I: Iterator<Item = Self>>(iter: I) -> Self {
+                iter.fold(Simd::splat(0 as $type), Add::add)
+            }
+        }
+
+        impl<const LANES: usize> Product<Self> for Simd<$type, LANES>
+        where
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            fn product<I: Iterator<Item = Self>>(iter: I) -> Self {
+                iter.fold(Simd::splat(1 as $type), Mul::mul)
+            }
+        }
+
+        impl<'a, const LANES: usize> Sum<&'a Self> for Simd<$type, LANES>
+        where
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            fn sum<I: Iterator<Item = &'a Self>>(iter: I) -> Self {
+                iter.fold(Simd::splat(0 as $type), Add::add)
+            }
+        }
+
+        impl<'a, const LANES: usize> Product<&'a Self> for Simd<$type, LANES>
+        where
+            LaneCount<LANES>: SupportedLaneCount,
+        {
+            fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self {
+                iter.fold(Simd::splat(1 as $type), Mul::mul)
+            }
+        }
+    }
+}
+
+impl_traits! { f32 }
+impl_traits! { f64 }
+impl_traits! { u8 }
+impl_traits! { u16 }
+impl_traits! { u32 }
+impl_traits! { u64 }
+impl_traits! { usize }
+impl_traits! { i8 }
+impl_traits! { i16 }
+impl_traits! { i32 }
+impl_traits! { i64 }
+impl_traits! { isize }