From 3615dfca66920973e9b8e10f6b4b4d2d88df00ed Mon Sep 17 00:00:00 2001
From: Trevor Gross <tmgross@umich.edu>
Date: Tue, 18 Jun 2024 22:18:21 -0500
Subject: [PATCH] Support `Zeroable` and `Pod` for `f16` and `f128`

These are gated under a new feature flag `nightly_float`.

Fixes: <https://github.com/Lokathor/bytemuck/issues/250>
---
 Cargo.toml | 2 ++
 src/lib.rs | 1 +
 src/pod.rs | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/Cargo.toml b/Cargo.toml
index 05a2715..bfa5d8f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,6 +42,8 @@ unsound_ptr_pod_impl = []
 # NOT SEMVER SUPPORTED! TEMPORARY ONLY!
 nightly_portable_simd = []
 nightly_stdsimd = []
+# Enable `f16` and `f128`
+nightly_float = []
 
 # Improved documentation using the nightly toolchain
 nightly_docs = []
diff --git a/src/lib.rs b/src/lib.rs
index daa8177..1526587 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,6 +6,7 @@
 #![allow(clippy::type_complexity)]
 #![cfg_attr(feature = "nightly_docs", feature(doc_cfg))]
 #![cfg_attr(feature = "nightly_portable_simd", feature(portable_simd))]
+#![cfg_attr(feature = "nightly_float", feature(f16, f128))]
 #![cfg_attr(
   all(
     feature = "nightly_stdsimd",
diff --git a/src/pod.rs b/src/pod.rs
index 724c0a0..92747a1 100644
--- a/src/pod.rs
+++ b/src/pod.rs
@@ -49,8 +49,12 @@ unsafe impl Pod for usize {}
 unsafe impl Pod for isize {}
 unsafe impl Pod for u128 {}
 unsafe impl Pod for i128 {}
+#[cfg(feature = "nightly_float")]
+unsafe impl Pod for f16 {}
 unsafe impl Pod for f32 {}
 unsafe impl Pod for f64 {}
+#[cfg(feature = "nightly_float")]
+unsafe impl Pod for f128 {}
 unsafe impl<T: Pod> Pod for Wrapping<T> {}
 
 #[cfg(feature = "unsound_ptr_pod_impl")]