feat: add x1 portable_simd type aliases (f32x1, ...) and implementations of the corresponding traits (#67)

* feat: add portable_simd trait implementations for the x1 variants

* chore: clippy fixes

* chore: update changelog

---------

Co-authored-by: Sébastien Crozet <[email protected]>

Author: aabizri

CHANGELOG

@@ -1,3 +1,6 @@
+## Unreleased
+- Add single-lanes portable-simd trait implementations.
+
 ## Release v0.9.1 (05 Sept. 2025)
 - `into_arr`, `from_arr`, `map`, `zip_map` are now public on `WideF32x4`, `WideF32x8` and `WideF64x4`.
 - `from_arr` and `into_arr` are now public on `WideBoolF32x4`, `WideBoolF32x8`, `WideBoolF64x4`.

src/simd/portable_simd_impl.rs

@@ -58,6 +58,8 @@ macro_rules! impl_bool_simd (
 
                 write!(f, "({}", self.extract(0))?;
 
+                // Suppress warning for single-lanes values.
+                #[allow(clippy::reversed_empty_ranges)]
                 for i in 1..Self::LANES {
                     write!(f, ", {}", self.extract(i))?;
                 }
@@ -279,6 +281,8 @@ macro_rules! impl_simd_value (
 
                 write!(f, "({}", self.extract(0))?;
 
+                // Suppress warning for single-lanes values.
+                #[allow(clippy::reversed_empty_ranges)]
                 for i in 1..Self::LANES {
                     write!(f, ", {}", self.extract(i))?;
                 }
@@ -1070,6 +1074,9 @@ macro_rules! impl_float_simd (
             #[inline(always)]
             fn simd_horizontal_product(self) -> Self::Element {
                 let mut prod = self.extract(0);
+
+                // Suppress warning for single-lanes values.
+                #[allow(clippy::reversed_empty_ranges)]
                 for ii in 1..Self::LANES {
                     prod *= self.extract(ii)
                 }
@@ -1498,82 +1505,99 @@ fn simd_complex_from_polar<N: SimdRealField>(r: N, theta: N) -> num_complex::Com
 }
 
 impl_float_simd!(
+    portable_simd::f32x1, f32, portable_simd::i32x1, mask32x1, _0;
     portable_simd::f32x2, f32, portable_simd::i32x2, mask32x2, _0, _1;
     portable_simd::f32x4, f32, portable_simd::i32x4, mask32x4, _0, _1, _2, _3;
     portable_simd::f32x8, f32, portable_simd::i32x8, mask32x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::f32x16, f32, portable_simd::i32x16, mask32x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
+    portable_simd::f64x1, f64, portable_simd::i64x1, mask64x1, _0;
     portable_simd::f64x2, f64, portable_simd::i64x2, mask64x2, _0, _1;
     portable_simd::f64x4, f64, portable_simd::i64x4, mask64x4, _0, _1, _2, _3;
     portable_simd::f64x8, f64, portable_simd::i64x8, mask64x8, _0, _1, _2, _3, _4, _5, _6, _7;
 );
 
 impl_int_simd!(
+    portable_simd::i16x1, i16, mask16x1, _0;
     portable_simd::i16x2, i16, mask16x2, _0, _1;
     portable_simd::i16x4, i16, mask16x4, _0, _1, _2, _3;
     portable_simd::i16x8, i16, mask16x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::i16x16, i16, mask16x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::i16x32, i16, mask16x32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
+    portable_simd::i32x1, i32, mask32x1, _0;
     portable_simd::i32x2, i32, mask32x2, _0, _1;
     portable_simd::i32x4, i32, mask32x4, _0, _1, _2, _3;
     portable_simd::i32x8, i32, mask32x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::i32x16, i32, mask32x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
+    portable_simd::i64x1, i64, mask64x1, _0;
     portable_simd::i64x2, i64, mask64x2, _0, _1;
     portable_simd::i64x4, i64, mask64x4, _0, _1, _2, _3;
     portable_simd::i64x8, i64, mask64x8, _0, _1, _2, _3, _4, _5, _6, _7;
+    portable_simd::i8x1, i8, mask8x1, _0;
     portable_simd::i8x2, i8, mask8x2, _0, _1;
     portable_simd::i8x4, i8, mask8x4, _0, _1, _2, _3;
     portable_simd::i8x8, i8, mask8x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::i8x16, i8, mask8x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::i8x32, i8, mask8x32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
     portable_simd::i8x64, i8, mask8x64, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63;
+    portable_simd::isizex1, isize, masksizex1, _0;
     portable_simd::isizex2, isize, masksizex2, _0, _1;
     portable_simd::isizex4, isize, masksizex4, _0, _1, _2, _3;
     portable_simd::isizex8, isize, masksizex8, _0, _1, _2, _3, _4, _5, _6, _7;
 );
 
 impl_uint_simd!(
+    portable_simd::u16x1, u16, mask16x1, _0;
     portable_simd::u16x2, u16, mask16x2, _0, _1;
     portable_simd::u16x4, u16, mask16x4, _0, _1, _2, _3;
     portable_simd::u16x8, u16, mask16x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::u16x16, u16, mask16x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::u16x32, u16, mask16x32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
+    portable_simd::u32x1, u32, mask32x1, _0;
     portable_simd::u32x2, u32, mask32x2, _0, _1;
     portable_simd::u32x4, u32, mask32x4, _0, _1, _2, _3;
     portable_simd::u32x8, u32, mask32x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::u32x16, u32, mask32x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
+    portable_simd::u64x1, u64, mask64x1, _0;
     portable_simd::u64x2, u64, mask64x2, _0, _1;
     portable_simd::u64x4, u64, mask64x4, _0, _1, _2, _3;
     portable_simd::u64x8, u64, mask64x8, _0, _1, _2, _3, _4, _5, _6, _7;
+    portable_simd::u8x1, u8, mask8x1, _0;
     portable_simd::u8x2, u8, mask8x2, _0, _1;
     portable_simd::u8x4, u8, mask8x4, _0, _1, _2, _3;
     portable_simd::u8x8, u8, mask8x8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::u8x16, u8, mask8x16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::u8x32, u8, mask8x32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
     portable_simd::u8x64, u8, mask8x64, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63;
+    portable_simd::usizex1, usize, masksizex1, _0;
     portable_simd::usizex2, usize, masksizex2, _0, _1;
     portable_simd::usizex4, usize, masksizex4, _0, _1, _2, _3;
     portable_simd::usizex8, usize, masksizex8, _0, _1, _2, _3, _4, _5, _6, _7;
 );
 
 impl_bool_simd!(
+    portable_simd::mask16x1, 1, _0;
     portable_simd::mask16x2, 2, _0, _1;
     portable_simd::mask16x4, 4, _0, _1, _2, _3;
     portable_simd::mask16x8, 8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::mask16x16, 16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::mask16x32, 32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
+    portable_simd::mask32x1, 1, _0;
     portable_simd::mask32x2, 2, _0, _1;
     portable_simd::mask32x4, 4, _0, _1, _2, _3;
     portable_simd::mask32x8, 8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::mask32x16, 16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
+    portable_simd::mask64x1, 1, _0;
     portable_simd::mask64x2, 2, _0, _1;
     portable_simd::mask64x4, 4, _0, _1, _2, _3;
     portable_simd::mask64x8, 8, _0, _1, _2, _3, _4, _5, _6, _7;
+    portable_simd::mask8x1, 1, _0;
     portable_simd::mask8x2, 2, _0, _1;
     portable_simd::mask8x4, 4, _0, _1, _2, _3;
     portable_simd::mask8x8, 8, _0, _1, _2, _3, _4, _5, _6, _7;
     portable_simd::mask8x16, 16, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15;
     portable_simd::mask8x32, 32, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31;
     portable_simd::mask8x64, 64, _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63;
+    portable_simd::masksizex1, 1, _0;
     portable_simd::masksizex2, 2, _0, _1;
     portable_simd::masksizex4, 4, _0, _1, _2, _3;
     portable_simd::masksizex8, 8, _0, _1, _2, _3, _4, _5, _6, _7;
@@ -1607,52 +1631,64 @@ impl_bool_simd!(
 //               Aliases                //
 //////////////////////////////////////////
 
+pub type f32x1 = Simd<portable_simd::f32x1>;
 pub type f32x2 = Simd<portable_simd::f32x2>;
 pub type f32x4 = Simd<portable_simd::f32x4>;
 pub type f32x8 = Simd<portable_simd::f32x8>;
 pub type f32x16 = Simd<portable_simd::f32x16>;
+pub type f64x1 = Simd<portable_simd::f64x1>;
 pub type f64x2 = Simd<portable_simd::f64x2>;
 pub type f64x4 = Simd<portable_simd::f64x4>;
 pub type f64x8 = Simd<portable_simd::f64x8>;
+pub type i16x1 = Simd<portable_simd::i16x1>;
 pub type i16x2 = Simd<portable_simd::i16x2>;
 pub type i16x4 = Simd<portable_simd::i16x4>;
 pub type i16x8 = Simd<portable_simd::i16x8>;
 pub type i16x16 = Simd<portable_simd::i16x16>;
 pub type i16x32 = Simd<portable_simd::i16x32>;
+pub type i32x1 = Simd<portable_simd::i32x1>;
 pub type i32x2 = Simd<portable_simd::i32x2>;
 pub type i32x4 = Simd<portable_simd::i32x4>;
 pub type i32x8 = Simd<portable_simd::i32x8>;
 pub type i32x16 = Simd<portable_simd::i32x16>;
+pub type i64x1 = Simd<portable_simd::i64x1>;
 pub type i64x2 = Simd<portable_simd::i64x2>;
 pub type i64x4 = Simd<portable_simd::i64x4>;
 pub type i64x8 = Simd<portable_simd::i64x8>;
+pub type i8x1 = Simd<portable_simd::i8x1>;
 pub type i8x2 = Simd<portable_simd::i8x2>;
 pub type i8x4 = Simd<portable_simd::i8x4>;
 pub type i8x8 = Simd<portable_simd::i8x8>;
 pub type i8x16 = Simd<portable_simd::i8x16>;
 pub type i8x32 = Simd<portable_simd::i8x32>;
 pub type i8x64 = Simd<portable_simd::i8x64>;
+pub type isizex1 = Simd<portable_simd::isizex1>;
 pub type isizex2 = Simd<portable_simd::isizex2>;
 pub type isizex4 = Simd<portable_simd::isizex4>;
 pub type isizex8 = Simd<portable_simd::isizex8>;
+pub type u16x1 = Simd<portable_simd::u16x1>;
 pub type u16x2 = Simd<portable_simd::u16x2>;
 pub type u16x4 = Simd<portable_simd::u16x4>;
 pub type u16x8 = Simd<portable_simd::u16x8>;
 pub type u16x16 = Simd<portable_simd::u16x16>;
 pub type u16x32 = Simd<portable_simd::u16x32>;
+pub type u32x1 = Simd<portable_simd::u32x1>;
 pub type u32x2 = Simd<portable_simd::u32x2>;
 pub type u32x4 = Simd<portable_simd::u32x4>;
 pub type u32x8 = Simd<portable_simd::u32x8>;
 pub type u32x16 = Simd<portable_simd::u32x16>;
+pub type u64x1 = Simd<portable_simd::u64x1>;
 pub type u64x2 = Simd<portable_simd::u64x2>;
 pub type u64x4 = Simd<portable_simd::u64x4>;
 pub type u64x8 = Simd<portable_simd::u64x8>;
+pub type u8x1 = Simd<portable_simd::u8x1>;
 pub type u8x2 = Simd<portable_simd::u8x2>;
 pub type u8x4 = Simd<portable_simd::u8x4>;
 pub type u8x8 = Simd<portable_simd::u8x8>;
 pub type u8x16 = Simd<portable_simd::u8x16>;
 pub type u8x32 = Simd<portable_simd::u8x32>;
 pub type u8x64 = Simd<portable_simd::u8x64>;
+pub type usizex1 = Simd<portable_simd::usizex1>;
 pub type usizex2 = Simd<portable_simd::usizex2>;
 pub type usizex4 = Simd<portable_simd::usizex4>;
 pub type usizex8 = Simd<portable_simd::usizex8>;