Add TryFrom bounds for all integer primitive types to SimdIntElement

CHANGELOG.md

@@ -16,6 +16,7 @@ You can find its changes [documented below](#070-2026-08-11).
 - Added lane-wise `count_ones` and `count_zeros` operations for all integer vector types and backends.
 - Added `mul_add_precise` and `mul_sub_precise` for floating-point vectors. They guarantee the infinite-precision product-plus-add rounded once, including on SIMD levels without hardware fused multiply-add instructions. They are not susceptible to the [bug](https://github.com/rust-lang/compiler-builtins/issues/1262) in Rust standard library, `std::simd` and musl libc that causes incorrect rounding for subnormal results. SSE4.2 gets SIMD emulation of these operations for better performance. ([#323][], [#324][] by [@Shnatsel][])
 - Documented the storage representation of the SIMD vector types. The documented representation will not change without a semver major version change.
+- Added `TryFrom` bounds to `SimdIntElement`, allowing attempted conversion from all primitive integer types.
 
 ### Changed
 

fearless_simd/src/traits.rs

@@ -6,6 +6,7 @@
     reason = "TODO: https://github.com/linebender/fearless_simd/issues/40"
 )]
 use crate::{Simd, SimdBase, seal::Seal};
+use core::error::Error;
 use core::fmt::{Binary, Debug, Display, LowerExp, UpperExp};
 use core::iter::{Product, Sum};
 use core::ops::{
@@ -219,6 +220,18 @@ pub trait SimdIntElement:
     + BitOrAssign<Self>
     + BitXor<Self, Output = Self>
     + BitXorAssign<Self>
+    + TryFrom<u8, Error: Copy + Error + Eq>
+    + TryFrom<u16, Error: Copy + Error + Eq>
+    + TryFrom<u32, Error: Copy + Error + Eq>
+    + TryFrom<u64, Error: Copy + Error + Eq>
+    + TryFrom<u128, Error: Copy + Error + Eq>
+    + TryFrom<usize, Error: Copy + Error + Eq>
+    + TryFrom<i8, Error: Copy + Error + Eq>
+    + TryFrom<i16, Error: Copy + Error + Eq>
+    + TryFrom<i32, Error: Copy + Error + Eq>
+    + TryFrom<i64, Error: Copy + Error + Eq>
+    + TryFrom<i128, Error: Copy + Error + Eq>
+    + TryFrom<isize, Error: Copy + Error + Eq>
     + for<'a> Shl<&'a usize, Output = Self>
     + for<'a> ShlAssign<&'a usize>
     + for<'a> Shr<&'a usize, Output = Self>