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Stabilize to_bytes and from_bytes for integers. #51835

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Jun 27, 2018
Merged

Stabilize to_bytes and from_bytes for integers. #51835

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16 changes: 4 additions & 12 deletions src/libcore/num/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1996,12 +1996,10 @@ $EndFeature, "
/// # Examples
///
/// ```
/// #![feature(int_to_from_bytes)]
///
/// let bytes = i32::min_value().to_be().to_bytes();
/// assert_eq!(bytes, [0x80, 0, 0, 0]);
/// ```
#[unstable(feature = "int_to_from_bytes", issue = "49792")]
#[stable(feature = "int_to_from_bytes", since = "1.29.0")]
#[inline]
pub fn to_bytes(self) -> [u8; mem::size_of::<Self>()] {
unsafe { mem::transmute(self) }
Expand All @@ -2018,12 +2016,10 @@ $EndFeature, "
/// # Examples
///
/// ```
/// #![feature(int_to_from_bytes)]
///
/// let int = i32::from_be(i32::from_bytes([0x80, 0, 0, 0]));
/// assert_eq!(int, i32::min_value());
/// ```
#[unstable(feature = "int_to_from_bytes", issue = "49792")]
#[stable(feature = "int_to_from_bytes", since = "1.29.0")]
#[inline]
pub fn from_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
unsafe { mem::transmute(bytes) }
Expand Down Expand Up @@ -3702,12 +3698,10 @@ $EndFeature, "
/// # Examples
///
/// ```
/// #![feature(int_to_from_bytes)]
///
/// let bytes = 0x1234_5678_u32.to_be().to_bytes();
/// assert_eq!(bytes, [0x12, 0x34, 0x56, 0x78]);
/// ```
#[unstable(feature = "int_to_from_bytes", issue = "49792")]
#[stable(feature = "int_to_from_bytes", since = "1.29.0")]
#[inline]
pub fn to_bytes(self) -> [u8; mem::size_of::<Self>()] {
unsafe { mem::transmute(self) }
Expand All @@ -3724,12 +3718,10 @@ $EndFeature, "
/// # Examples
///
/// ```
/// #![feature(int_to_from_bytes)]
///
/// let int = u32::from_be(u32::from_bytes([0x12, 0x34, 0x56, 0x78]));
/// assert_eq!(int, 0x1234_5678_u32);
/// ```
#[unstable(feature = "int_to_from_bytes", issue = "49792")]
#[stable(feature = "int_to_from_bytes", since = "1.29.0")]
#[inline]
pub fn from_bytes(bytes: [u8; mem::size_of::<Self>()]) -> Self {
unsafe { mem::transmute(bytes) }
Expand Down