C code tests & avx512f f16 implement (#183)

* test: add tests for c code

Signed-off-by: usamoi <usamoi@outlook.com>

* fix: relax EPSILON for tests

Signed-off-by: usamoi <usamoi@outlook.com>

---------

Signed-off-by: usamoi <usamoi@outlook.com>

crates/detect/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "detect"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+std_detect = { git = "https://github.com/tensorchord/stdarch.git", branch = "avx512fp16" }
+ctor = "0.2.6"

crates/detect/src/lib.rs

@@ -0,0 +1 @@
+pub mod x86_64;

crates/detect/src/x86_64.rs

@@ -0,0 +1,85 @@
+#![cfg(target_arch = "x86_64")]
+
+use std::sync::atomic::{AtomicBool, Ordering};
+
+static ATOMIC_AVX512FP16: AtomicBool = AtomicBool::new(false);
+
+pub fn test_avx512fp16() -> bool {
+    std_detect::is_x86_feature_detected!("avx512fp16") && test_v4()
+}
+
+#[ctor::ctor]
+fn ctor_avx512fp16() {
+    ATOMIC_AVX512FP16.store(test_avx512fp16(), Ordering::Relaxed);
+}
+
+pub fn detect_avx512fp16() -> bool {
+    ATOMIC_AVX512FP16.load(Ordering::Relaxed)
+}
+
+static ATOMIC_V4: AtomicBool = AtomicBool::new(false);
+
+pub fn test_v4() -> bool {
+    std_detect::is_x86_feature_detected!("avx512bw")
+        && std_detect::is_x86_feature_detected!("avx512cd")
+        && std_detect::is_x86_feature_detected!("avx512dq")
+        && std_detect::is_x86_feature_detected!("avx512f")
+        && std_detect::is_x86_feature_detected!("avx512vl")
+        && test_v3()
+}
+
+#[ctor::ctor]
+fn ctor_v4() {
+    ATOMIC_V4.store(test_v4(), Ordering::Relaxed);
+}
+
+pub fn detect_v4() -> bool {
+    ATOMIC_V4.load(Ordering::Relaxed)
+}
+
+static ATOMIC_V3: AtomicBool = AtomicBool::new(false);
+
+pub fn test_v3() -> bool {
+    std_detect::is_x86_feature_detected!("avx")
+        && std_detect::is_x86_feature_detected!("avx2")
+        && std_detect::is_x86_feature_detected!("bmi1")
+        && std_detect::is_x86_feature_detected!("bmi2")
+        && std_detect::is_x86_feature_detected!("f16c")
+        && std_detect::is_x86_feature_detected!("fma")
+        && std_detect::is_x86_feature_detected!("lzcnt")
+        && std_detect::is_x86_feature_detected!("movbe")
+        && std_detect::is_x86_feature_detected!("xsave")
+        && test_v2()
+}
+
+#[ctor::ctor]
+fn ctor_v3() {
+    ATOMIC_V3.store(test_v3(), Ordering::Relaxed);
+}
+
+pub fn detect_v3() -> bool {
+    ATOMIC_V3.load(Ordering::Relaxed)
+}
+
+static ATOMIC_V2: AtomicBool = AtomicBool::new(false);
+
+pub fn test_v2() -> bool {
+    std_detect::is_x86_feature_detected!("cmpxchg16b")
+        && std_detect::is_x86_feature_detected!("fxsr")
+        && std_detect::is_x86_feature_detected!("popcnt")
+        && std_detect::is_x86_feature_detected!("sse")
+        && std_detect::is_x86_feature_detected!("sse2")
+        && std_detect::is_x86_feature_detected!("sse3")
+        && std_detect::is_x86_feature_detected!("sse4.1")
+        && std_detect::is_x86_feature_detected!("sse4.2")
+        && std_detect::is_x86_feature_detected!("ssse3")
+}
+
+#[ctor::ctor]
+fn ctor_v2() {
+    ATOMIC_V2.store(test_v2(), Ordering::Relaxed);
+}
+
+pub fn _detect_v2() -> bool {
+    ATOMIC_V2.load(Ordering::Relaxed)
+}