From d7ab57e9fd9e6682dd7e8c20772f22e7450eef1f Mon Sep 17 00:00:00 2001
From: Jacob Lifshay <programmerjake@gmail.com>
Date: Mon, 3 May 2021 22:02:08 -0700
Subject: [PATCH] start adding stdsimd support

---
 Cargo.toml     |  2 ++
 src/lib.rs     |  2 ++
 src/stdsimd.rs | 45 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 49 insertions(+)
 create mode 100644 src/stdsimd.rs

diff --git a/Cargo.toml b/Cargo.toml
index 3cf9665..5f82460 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ license = "MIT OR Apache-2.0"
 [dependencies]
 half = { version = "1.7.1", optional = true }
 typed-arena = { version = "2.0.1", optional = true }
+core_simd = { version = "0.1.0", git = "https://github.com/rust-lang/stdsimd", optional = true }
 
 [features]
 default = ["f16", "fma"]
@@ -15,3 +16,4 @@ f16 = ["half"]
 fma = ["std"]
 std = []
 ir = ["std", "typed-arena"]
+stdsimd = ["core_simd"]
diff --git a/src/lib.rs b/src/lib.rs
index 1b3add3..cecc2e4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,4 +10,6 @@ pub mod ieee754;
 #[cfg(feature = "ir")]
 pub mod ir;
 pub mod scalar;
+#[cfg(feature = "stdsimd")]
+pub mod stdsimd;
 pub mod traits;
diff --git a/src/stdsimd.rs b/src/stdsimd.rs
new file mode 100644
index 0000000..4e76d8f
--- /dev/null
+++ b/src/stdsimd.rs
@@ -0,0 +1,45 @@
+use crate::{f16::F16, traits::Context};
+use core::marker::PhantomData;
+use core_simd::SimdF32;
+
+#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, Default)]
+pub struct StdSimd<const LANES: usize>(PhantomData<[(); LANES]>);
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Default)]
+pub struct Scalar<T, const LANES: usize>(pub T, PhantomData<[(); LANES]>);
+
+impl<T, const LANES: usize> From<T> for Scalar<T, LANES> {
+    fn from(v: T) -> Self {
+        Scalar(v, PhantomData)
+    }
+}
+
+/*
+TODO(programmerjake): finish after splitting Context::VecBool
+impl<const LANES: usize> Context for StdSimd<LANES> {
+    type Bool = Scalar<bool>;
+    type U8 = Scalar<u8>;
+    type I8 = Scalar<i8>;
+    type U16 = Scalar<u16>;
+    type I16 = Scalar<i16>;
+    type F16 = Scalar<F16>;
+    type U32 = Scalar<u32>;
+    type I32 = Scalar<i32>;
+    type F32 = Scalar<f32>;
+    type U64 = Scalar<u64>;
+    type I64 = Scalar<i64>;
+    type F64 = Scalar<f64>;
+    type VecBool;
+    type VecU8;
+    type VecI8;
+    type VecU16;
+    type VecI16;
+    type VecF16;
+    type VecU32;
+    type VecI32;
+    type VecF32;
+    type VecU64;
+    type VecI64;
+    type VecF64;
+}
+*/
-- 
2.30.2