diff options
Diffstat (limited to 'library/portable-simd/crates/core_simd/src/to_bytes.rs')
-rw-r--r-- | library/portable-simd/crates/core_simd/src/to_bytes.rs | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/library/portable-simd/crates/core_simd/src/to_bytes.rs b/library/portable-simd/crates/core_simd/src/to_bytes.rs new file mode 100644 index 000000000..b36b1a347 --- /dev/null +++ b/library/portable-simd/crates/core_simd/src/to_bytes.rs @@ -0,0 +1,41 @@ +macro_rules! impl_to_bytes { + { $ty:ty, $size:literal } => { + impl<const LANES: usize> crate::simd::Simd<$ty, LANES> + where + crate::simd::LaneCount<LANES>: crate::simd::SupportedLaneCount, + crate::simd::LaneCount<{{ $size * LANES }}>: crate::simd::SupportedLaneCount, + { + /// Return the memory representation of this integer as a byte array in native byte + /// order. + pub fn to_ne_bytes(self) -> crate::simd::Simd<u8, {{ $size * LANES }}> { + // Safety: transmuting between vectors is safe + unsafe { core::mem::transmute_copy(&self) } + } + + /// Create a native endian integer value from its memory representation as a byte array + /// in native endianness. + pub fn from_ne_bytes(bytes: crate::simd::Simd<u8, {{ $size * LANES }}>) -> Self { + // Safety: transmuting between vectors is safe + unsafe { core::mem::transmute_copy(&bytes) } + } + } + } +} + +impl_to_bytes! { u8, 1 } +impl_to_bytes! { u16, 2 } +impl_to_bytes! { u32, 4 } +impl_to_bytes! { u64, 8 } +#[cfg(target_pointer_width = "32")] +impl_to_bytes! { usize, 4 } +#[cfg(target_pointer_width = "64")] +impl_to_bytes! { usize, 8 } + +impl_to_bytes! { i8, 1 } +impl_to_bytes! { i16, 2 } +impl_to_bytes! { i32, 4 } +impl_to_bytes! { i64, 8 } +#[cfg(target_pointer_width = "32")] +impl_to_bytes! { isize, 4 } +#[cfg(target_pointer_width = "64")] +impl_to_bytes! { isize, 8 } |