<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/Users/m018/.cargo/registry/src/github.com-1ecc6299db9ec823/num-traits-0.2.16/src/ops/bytes.rs`."><title>bytes.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../static.files/rustdoc-c4dbdcde0fbd8430.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../../static.files/light-db279b6232be9c13.css"><link rel="stylesheet" disabled href="../../../static.files/dark-cf923f49f397b216.css"><link rel="stylesheet" disabled href="../../../static.files/ayu-be46fdc453a55015.css"><script src="../../../static.files/storage-3891ce972e3a2bf8.js"></script><script defer src="../../../static.files/source-script-1b95b7cca98b26e5.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../static.files/main-98a684e84ae5b08b.js"></script><noscript><link rel="stylesheet" href="../../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../../num_traits/index.html"><img class="rust-logo" src="../../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre><pre class="rust"><code><span class="kw">use </span>core::borrow::{Borrow, BorrowMut};
<span class="kw">use </span>core::cmp::{Eq, Ord, PartialEq, PartialOrd};
<span class="kw">use </span>core::fmt::Debug;
<span class="kw">use </span>core::hash::Hash;
<span class="attr">#[cfg(not(has_int_to_from_bytes))]
</span><span class="kw">use </span>core::mem::transmute;
<span class="kw">pub trait </span>NumBytes:
Debug
+ AsRef<[u8]>
+ AsMut<[u8]>
+ PartialEq
+ Eq
+ PartialOrd
+ Ord
+ Hash
+ Borrow<[u8]>
+ BorrowMut<[u8]>
{
}
<span class="kw">impl</span><T> NumBytes <span class="kw">for </span>T <span class="kw">where
</span>T: Debug
+ AsRef<[u8]>
+ AsMut<[u8]>
+ PartialEq
+ Eq
+ PartialOrd
+ Ord
+ Hash
+ Borrow<[u8]>
+ BorrowMut<[u8]>
+ <span class="question-mark">?</span>Sized
{
}
<span class="kw">pub trait </span>ToBytes {
<span class="kw">type </span>Bytes: NumBytes;
<span class="doccomment">/// Return the memory representation of this number as a byte array in big-endian byte order.
///
/// # Examples
///
/// ```
/// use num_traits::ToBytes;
///
/// let bytes = ToBytes::to_be_bytes(&0x12345678u32);
/// assert_eq!(bytes, [0x12, 0x34, 0x56, 0x78]);
/// ```
</span><span class="kw">fn </span>to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes;
<span class="doccomment">/// Return the memory representation of this number as a byte array in little-endian byte order.
///
/// # Examples
///
/// ```
/// use num_traits::ToBytes;
///
/// let bytes = ToBytes::to_le_bytes(&0x12345678u32);
/// assert_eq!(bytes, [0x78, 0x56, 0x34, 0x12]);
/// ```
</span><span class="kw">fn </span>to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes;
<span class="doccomment">/// Return the memory representation of this number as a byte array in native byte order.
///
/// As the target platform's native endianness is used,
/// portable code should use [`to_be_bytes`] or [`to_le_bytes`], as appropriate, instead.
///
/// [`to_be_bytes`]: #method.to_be_bytes
/// [`to_le_bytes`]: #method.to_le_bytes
///
/// # Examples
///
/// ```
/// use num_traits::ToBytes;
///
/// #[cfg(target_endian = "big")]
/// let expected = [0x12, 0x34, 0x56, 0x78];
///
/// #[cfg(target_endian = "little")]
/// let expected = [0x78, 0x56, 0x34, 0x12];
///
/// let bytes = ToBytes::to_ne_bytes(&0x12345678u32);
/// assert_eq!(bytes, expected)
/// ```
</span><span class="kw">fn </span>to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<span class="attr">#[cfg(target_endian = <span class="string">"big"</span>)]
</span><span class="kw">let </span>bytes = <span class="self">self</span>.to_be_bytes();
<span class="attr">#[cfg(target_endian = <span class="string">"little"</span>)]
</span><span class="kw">let </span>bytes = <span class="self">self</span>.to_le_bytes();
bytes
}
}
<span class="kw">pub trait </span>FromBytes: Sized {
<span class="kw">type </span>Bytes: NumBytes + <span class="question-mark">?</span>Sized;
<span class="doccomment">/// Create a number from its representation as a byte array in big endian.
///
/// # Examples
///
/// ```
/// use num_traits::FromBytes;
///
/// let value: u32 = FromBytes::from_be_bytes(&[0x12, 0x34, 0x56, 0x78]);
/// assert_eq!(value, 0x12345678);
/// ```
</span><span class="kw">fn </span>from_be_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self</span>;
<span class="doccomment">/// Create a number from its representation as a byte array in little endian.
///
/// # Examples
///
/// ```
/// use num_traits::FromBytes;
///
/// let value: u32 = FromBytes::from_le_bytes(&[0x78, 0x56, 0x34, 0x12]);
/// assert_eq!(value, 0x12345678);
/// ```
</span><span class="kw">fn </span>from_le_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self</span>;
<span class="doccomment">/// Create a number from its memory representation as a byte array in native endianness.
///
/// As the target platform's native endianness is used,
/// portable code likely wants to use [`from_be_bytes`] or [`from_le_bytes`], as appropriate instead.
///
/// [`from_be_bytes`]: #method.from_be_bytes
/// [`from_le_bytes`]: #method.from_le_bytes
///
/// # Examples
///
/// ```
/// use num_traits::FromBytes;
///
/// #[cfg(target_endian = "big")]
/// let bytes = [0x12, 0x34, 0x56, 0x78];
///
/// #[cfg(target_endian = "little")]
/// let bytes = [0x78, 0x56, 0x34, 0x12];
///
/// let value: u32 = FromBytes::from_ne_bytes(&bytes);
/// assert_eq!(value, 0x12345678)
/// ```
</span><span class="kw">fn </span>from_ne_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="attr">#[cfg(target_endian = <span class="string">"big"</span>)]
</span><span class="kw">let </span>this = <span class="self">Self</span>::from_be_bytes(bytes);
<span class="attr">#[cfg(target_endian = <span class="string">"little"</span>)]
</span><span class="kw">let </span>this = <span class="self">Self</span>::from_le_bytes(bytes);
this
}
}
<span class="macro">macro_rules! </span>float_to_from_bytes_impl {
(<span class="macro-nonterminal">$T</span>:ty, <span class="macro-nonterminal">$L</span>:expr) => {
<span class="attr">#[cfg(has_float_to_from_bytes)]
</span><span class="kw">impl </span>ToBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_be_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_le_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_ne_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
}
<span class="attr">#[cfg(has_float_to_from_bytes)]
</span><span class="kw">impl </span>FromBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_be_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_be_bytes(<span class="kw-2">*</span>bytes)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_le_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_le_bytes(<span class="kw-2">*</span>bytes)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_ne_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_ne_bytes(<span class="kw-2">*</span>bytes)
}
}
<span class="attr">#[cfg(not(has_float_to_from_bytes))]
</span><span class="kw">impl </span>ToBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
ToBytes::to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>.to_bits())
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
ToBytes::to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>.to_bits())
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
ToBytes::to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>.to_bits())
}
}
<span class="attr">#[cfg(not(has_float_to_from_bytes))]
</span><span class="kw">impl </span>FromBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_be_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="self">Self</span>::from_bits(FromBytes::from_be_bytes(bytes))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_le_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="self">Self</span>::from_bits(FromBytes::from_le_bytes(bytes))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_ne_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="self">Self</span>::from_bits(FromBytes::from_ne_bytes(bytes))
}
}
};
}
<span class="macro">macro_rules! </span>int_to_from_bytes_impl {
(<span class="macro-nonterminal">$T</span>:ty, <span class="macro-nonterminal">$L</span>:expr) => {
<span class="attr">#[cfg(has_int_to_from_bytes)]
</span><span class="kw">impl </span>ToBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_be_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_le_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T</span>>::to_ne_bytes(<span class="kw-2">*</span><span class="self">self</span>)
}
}
<span class="attr">#[cfg(has_int_to_from_bytes)]
</span><span class="kw">impl </span>FromBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_be_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_be_bytes(<span class="kw-2">*</span>bytes)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_le_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_le_bytes(<span class="kw-2">*</span>bytes)
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_ne_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<<span class="macro-nonterminal">$T</span>>::from_ne_bytes(<span class="kw-2">*</span>bytes)
}
}
<span class="attr">#[cfg(not(has_int_to_from_bytes))]
</span><span class="kw">impl </span>ToBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_be_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T </span><span class="kw">as </span>ToBytes>::to_ne_bytes(<span class="kw-2">&</span><<span class="macro-nonterminal">$T</span>>::to_be(<span class="kw-2">*</span><span class="self">self</span>))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_le_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<<span class="macro-nonterminal">$T </span><span class="kw">as </span>ToBytes>::to_ne_bytes(<span class="kw-2">&</span><<span class="macro-nonterminal">$T</span>>::to_le(<span class="kw-2">*</span><span class="self">self</span>))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>to_ne_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self</span>::Bytes {
<span class="kw">unsafe </span>{ transmute(<span class="kw-2">*</span><span class="self">self</span>) }
}
}
<span class="attr">#[cfg(not(has_int_to_from_bytes))]
</span><span class="kw">impl </span>FromBytes <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<span class="kw">type </span>Bytes = [u8; <span class="macro-nonterminal">$L</span>];
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_be_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="self">Self</span>::from_be(<<span class="self">Self </span><span class="kw">as </span>FromBytes>::from_ne_bytes(bytes))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_le_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="self">Self</span>::from_le(<<span class="self">Self </span><span class="kw">as </span>FromBytes>::from_ne_bytes(bytes))
}
<span class="attr">#[inline]
</span><span class="kw">fn </span>from_ne_bytes(bytes: <span class="kw-2">&</span><span class="self">Self</span>::Bytes) -> <span class="self">Self </span>{
<span class="kw">unsafe </span>{ transmute(<span class="kw-2">*</span>bytes) }
}
}
};
}
<span class="macro">int_to_from_bytes_impl!</span>(u8, <span class="number">1</span>);
<span class="macro">int_to_from_bytes_impl!</span>(u16, <span class="number">2</span>);
<span class="macro">int_to_from_bytes_impl!</span>(u32, <span class="number">4</span>);
<span class="macro">int_to_from_bytes_impl!</span>(u64, <span class="number">8</span>);
<span class="macro">int_to_from_bytes_impl!</span>(u128, <span class="number">16</span>);
<span class="attr">#[cfg(target_pointer_width = <span class="string">"64"</span>)]
</span><span class="macro">int_to_from_bytes_impl!</span>(usize, <span class="number">8</span>);
<span class="attr">#[cfg(target_pointer_width = <span class="string">"32"</span>)]
</span><span class="macro">int_to_from_bytes_impl!</span>(usize, <span class="number">4</span>);
<span class="macro">int_to_from_bytes_impl!</span>(i8, <span class="number">1</span>);
<span class="macro">int_to_from_bytes_impl!</span>(i16, <span class="number">2</span>);
<span class="macro">int_to_from_bytes_impl!</span>(i32, <span class="number">4</span>);
<span class="macro">int_to_from_bytes_impl!</span>(i64, <span class="number">8</span>);
<span class="macro">int_to_from_bytes_impl!</span>(i128, <span class="number">16</span>);
<span class="attr">#[cfg(target_pointer_width = <span class="string">"64"</span>)]
</span><span class="macro">int_to_from_bytes_impl!</span>(isize, <span class="number">8</span>);
<span class="attr">#[cfg(target_pointer_width = <span class="string">"32"</span>)]
</span><span class="macro">int_to_from_bytes_impl!</span>(isize, <span class="number">4</span>);
<span class="macro">float_to_from_bytes_impl!</span>(f32, <span class="number">4</span>);
<span class="macro">float_to_from_bytes_impl!</span>(f64, <span class="number">8</span>);
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="macro">macro_rules! </span>check_to_from_bytes {
($( <span class="macro-nonterminal">$ty</span>:ty )+) => {$({
<span class="kw">let </span>n = <span class="number">1</span>;
<span class="kw">let </span>be = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_be_bytes(<span class="kw-2">&</span>n);
<span class="kw">let </span>le = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_le_bytes(<span class="kw-2">&</span>n);
<span class="kw">let </span>ne = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_ne_bytes(<span class="kw-2">&</span>n);
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>be.last().unwrap(), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>le.first().unwrap(), <span class="number">1</span>);
<span class="kw">if </span><span class="macro">cfg!</span>(target_endian = <span class="string">"big"</span>) {
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>ne.last().unwrap(), <span class="number">1</span>);
} <span class="kw">else </span>{
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>ne.first().unwrap(), <span class="number">1</span>);
}
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_be_bytes(<span class="kw-2">&</span>be), n);
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_le_bytes(<span class="kw-2">&</span>le), n);
<span class="kw">if </span><span class="macro">cfg!</span>(target_endian = <span class="string">"big"</span>) {
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_ne_bytes(<span class="kw-2">&</span>be), n);
} <span class="kw">else </span>{
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_ne_bytes(<span class="kw-2">&</span>le), n);
}
})+}
}
<span class="attr">#[test]
</span><span class="kw">fn </span>convert_between_int_and_bytes() {
<span class="macro">check_to_from_bytes!</span>(u8 u16 u32 u64 u128 usize);
<span class="macro">check_to_from_bytes!</span>(i8 i16 i32 i64 i128 isize);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>convert_between_float_and_bytes() {
<span class="macro">macro_rules! </span>check_to_from_bytes {
($( <span class="macro-nonterminal">$ty</span>:ty )+) => {$(
<span class="kw">let </span>n: <span class="macro-nonterminal">$ty </span>= <span class="number">3.14</span>;
<span class="kw">let </span>be = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_be_bytes(<span class="kw-2">&</span>n);
<span class="kw">let </span>le = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_le_bytes(<span class="kw-2">&</span>n);
<span class="kw">let </span>ne = <<span class="macro-nonterminal">$ty </span><span class="kw">as </span>ToBytes>::to_ne_bytes(<span class="kw-2">&</span>n);
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_be_bytes(<span class="kw-2">&</span>be), n);
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_le_bytes(<span class="kw-2">&</span>le), n);
<span class="kw">if </span><span class="macro">cfg!</span>(target_endian = <span class="string">"big"</span>) {
<span class="macro">assert_eq!</span>(ne, be);
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_ne_bytes(<span class="kw-2">&</span>be), n);
} <span class="kw">else </span>{
<span class="macro">assert_eq!</span>(ne, le);
<span class="macro">assert_eq!</span>(<<span class="macro-nonterminal">$ty </span><span class="kw">as </span>FromBytes>::from_ne_bytes(<span class="kw-2">&</span>le), n);
}
)+}
}
<span class="macro">check_to_from_bytes!</span>(f32 f64);
}
}
</code></pre></div>
</section></main><div id="rustdoc-vars" data-root-path="../../../" data-static-root-path="../../../static.files/" data-current-crate="num_traits" data-themes="" data-resource-suffix="" data-rustdoc-version="1.69.0 (84c898d65 2023-04-16) (built from a source tarball)" data-search-js="search-8a59a8356673ec1f.js" data-settings-js="settings-f0c5c39777a9a2f6.js" data-settings-css="settings-0bcba95ff279c1db.css" ></div></body></html>