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</pre><pre class="rust ">
<span class="comment">// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="kw">use</span> <span class="ident">iter</span>::<span class="ident">Sum</span>;
<span class="kw">use</span> <span class="ident">ops</span>::{<span class="ident">Add</span>, <span class="ident">Sub</span>, <span class="ident">Mul</span>, <span class="ident">Div</span>, <span class="ident">AddAssign</span>, <span class="ident">SubAssign</span>, <span class="ident">MulAssign</span>, <span class="ident">DivAssign</span>};
<span class="kw">const</span> <span class="ident">NANOS_PER_SEC</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">1_000_000_000</span>;
<span class="kw">const</span> <span class="ident">NANOS_PER_MILLI</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">1_000_000</span>;
<span class="kw">const</span> <span class="ident">MILLIS_PER_SEC</span>: <span class="ident">u64</span> <span class="op">=</span> <span class="number">1_000</span>;
<span class="doccomment">/// A `Duration` type to represent a span of time, typically used for system</span>
<span class="doccomment">/// timeouts.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Each `Duration` is composed of a number of seconds and nanosecond precision.</span>
<span class="doccomment">/// APIs binding a system timeout will typically round up the nanosecond</span>
<span class="doccomment">/// precision if the underlying system does not support that level of precision.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// `Duration`s implement many common traits, including [`Add`], [`Sub`], and other</span>
<span class="doccomment">/// [`ops`] traits.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`Add`]: ../../std/ops/trait.Add.html</span>
<span class="doccomment">/// [`Sub`]: ../../std/ops/trait.Sub.html</span>
<span class="doccomment">/// [`ops`]: ../../std/ops/index.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let five_seconds = Duration::new(5, 0);</span>
<span class="doccomment">/// let five_seconds_and_five_nanos = five_seconds + Duration::new(0, 5);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(five_seconds_and_five_nanos.as_secs(), 5);</span>
<span class="doccomment">/// assert_eq!(five_seconds_and_five_nanos.subsec_nanos(), 5);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let ten_millis = Duration::from_millis(10);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">PartialEq</span>, <span class="ident">Eq</span>, <span class="ident">PartialOrd</span>, <span class="ident">Ord</span>, <span class="ident">Debug</span>, <span class="ident">Hash</span>, <span class="ident">Default</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Duration</span> {
<span class="ident">secs</span>: <span class="ident">u64</span>,
<span class="ident">nanos</span>: <span class="ident">u32</span>, <span class="comment">// Always 0 <= nanos < NANOS_PER_SEC</span>
}
<span class="kw">impl</span> <span class="ident">Duration</span> {
<span class="doccomment">/// Creates a new `Duration` from the specified number of seconds and</span>
<span class="doccomment">/// additional nanosecond precision.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the nanoseconds is greater than 1 billion (the number of nanoseconds</span>
<span class="doccomment">/// in a second), then it will carry over into the seconds provided.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Panics</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This constructor will panic if the carry from the nanoseconds overflows</span>
<span class="doccomment">/// the seconds counter.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let five_seconds = Duration::new(5, 0);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">secs</span>: <span class="ident">u64</span>, <span class="ident">nanos</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="kw">let</span> <span class="ident">secs</span> <span class="op">=</span> <span class="ident">secs</span>.<span class="ident">checked_add</span>((<span class="ident">nanos</span> <span class="op">/</span> <span class="ident">NANOS_PER_SEC</span>) <span class="kw">as</span> <span class="ident">u64</span>)
.<span class="ident">expect</span>(<span class="string">"overflow in Duration::new"</span>);
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> <span class="ident">nanos</span> <span class="op">%</span> <span class="ident">NANOS_PER_SEC</span>;
<span class="ident">Duration</span> { <span class="ident">secs</span>: <span class="ident">secs</span>, <span class="ident">nanos</span>: <span class="ident">nanos</span> }
}
<span class="doccomment">/// Creates a new `Duration` from the specified number of seconds.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let duration = Duration::from_secs(5);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(5, duration.as_secs());</span>
<span class="doccomment">/// assert_eq!(0, duration.subsec_nanos());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_secs</span>(<span class="ident">secs</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="ident">Duration</span> { <span class="ident">secs</span>: <span class="ident">secs</span>, <span class="ident">nanos</span>: <span class="number">0</span> }
}
<span class="doccomment">/// Creates a new `Duration` from the specified number of milliseconds.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let duration = Duration::from_millis(2569);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(2, duration.as_secs());</span>
<span class="doccomment">/// assert_eq!(569000000, duration.subsec_nanos());</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">from_millis</span>(<span class="ident">millis</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="kw">let</span> <span class="ident">secs</span> <span class="op">=</span> <span class="ident">millis</span> <span class="op">/</span> <span class="ident">MILLIS_PER_SEC</span>;
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> ((<span class="ident">millis</span> <span class="op">%</span> <span class="ident">MILLIS_PER_SEC</span>) <span class="kw">as</span> <span class="ident">u32</span>) <span class="op">*</span> <span class="ident">NANOS_PER_MILLI</span>;
<span class="ident">Duration</span> { <span class="ident">secs</span>: <span class="ident">secs</span>, <span class="ident">nanos</span>: <span class="ident">nanos</span> }
}
<span class="doccomment">/// Returns the number of whole seconds represented by this `Duration`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The extra precision represented by this duration is ignored (i.e. extra</span>
<span class="doccomment">/// nanoseconds are not represented in the returned value).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let duration = Duration::new(5, 730023852);</span>
<span class="doccomment">/// assert_eq!(duration.as_secs(), 5);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// To determine the total number of seconds represented by the `Duration`,</span>
<span class="doccomment">/// use `as_secs` in combination with [`subsec_nanos`]:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let duration = Duration::new(5, 730023852);</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(5.730023852,</span>
<span class="doccomment">/// duration.as_secs() as f64</span>
<span class="doccomment">/// + duration.subsec_nanos() as f64 * 1e-9);</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`subsec_nanos`]: #method.subsec_nanos</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_secs</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="self">self</span>.<span class="ident">secs</span> }
<span class="doccomment">/// Returns the nanosecond precision represented by this `Duration`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This method does **not** return the length of the duration when</span>
<span class="doccomment">/// represented by nanoseconds. The returned number always represents a</span>
<span class="doccomment">/// fractional portion of a second (i.e. it is less than one billion).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let duration = Duration::from_millis(5010);</span>
<span class="doccomment">/// assert_eq!(duration.subsec_nanos(), 10000000);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">subsec_nanos</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="self">self</span>.<span class="ident">nanos</span> }
<span class="doccomment">/// Checked `Duration` addition. Computes `self + other`, returning [`None`]</span>
<span class="doccomment">/// if overflow occurred.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(Duration::new(0, 0).checked_add(Duration::new(0, 1)), Some(Duration::new(0, 1)));</span>
<span class="doccomment">/// assert_eq!(Duration::new(1, 0).checked_add(Duration::new(std::u64::MAX, 0)), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_checked_ops"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">checked_add</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">mut</span> <span class="ident">secs</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">secs</span>.<span class="ident">checked_add</span>(<span class="ident">rhs</span>.<span class="ident">secs</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">nanos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">nanos</span> <span class="op">+</span> <span class="ident">rhs</span>.<span class="ident">nanos</span>;
<span class="kw">if</span> <span class="ident">nanos</span> <span class="op">>=</span> <span class="ident">NANOS_PER_SEC</span> {
<span class="ident">nanos</span> <span class="op">-=</span> <span class="ident">NANOS_PER_SEC</span>;
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">new_secs</span>) <span class="op">=</span> <span class="ident">secs</span>.<span class="ident">checked_add</span>(<span class="number">1</span>) {
<span class="ident">secs</span> <span class="op">=</span> <span class="ident">new_secs</span>;
} <span class="kw">else</span> {
<span class="kw">return</span> <span class="prelude-val">None</span>;
}
}
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">nanos</span> <span class="op"><</span> <span class="ident">NANOS_PER_SEC</span>);
<span class="prelude-val">Some</span>(<span class="ident">Duration</span> {
<span class="ident">secs</span>: <span class="ident">secs</span>,
<span class="ident">nanos</span>: <span class="ident">nanos</span>,
})
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
<span class="doccomment">/// Checked `Duration` subtraction. Computes `self - other`, returning [`None`]</span>
<span class="doccomment">/// if the result would be negative or if underflow occurred.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(Duration::new(0, 1).checked_sub(Duration::new(0, 0)), Some(Duration::new(0, 1)));</span>
<span class="doccomment">/// assert_eq!(Duration::new(0, 0).checked_sub(Duration::new(0, 1)), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_checked_ops"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">checked_sub</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">mut</span> <span class="ident">secs</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">secs</span>.<span class="ident">checked_sub</span>(<span class="ident">rhs</span>.<span class="ident">secs</span>) {
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">nanos</span> <span class="op">>=</span> <span class="ident">rhs</span>.<span class="ident">nanos</span> {
<span class="self">self</span>.<span class="ident">nanos</span> <span class="op">-</span> <span class="ident">rhs</span>.<span class="ident">nanos</span>
} <span class="kw">else</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">sub_secs</span>) <span class="op">=</span> <span class="ident">secs</span>.<span class="ident">checked_sub</span>(<span class="number">1</span>) {
<span class="ident">secs</span> <span class="op">=</span> <span class="ident">sub_secs</span>;
<span class="self">self</span>.<span class="ident">nanos</span> <span class="op">+</span> <span class="ident">NANOS_PER_SEC</span> <span class="op">-</span> <span class="ident">rhs</span>.<span class="ident">nanos</span>
} <span class="kw">else</span> {
<span class="kw">return</span> <span class="prelude-val">None</span>;
}
};
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">nanos</span> <span class="op"><</span> <span class="ident">NANOS_PER_SEC</span>);
<span class="prelude-val">Some</span>(<span class="ident">Duration</span> { <span class="ident">secs</span>: <span class="ident">secs</span>, <span class="ident">nanos</span>: <span class="ident">nanos</span> })
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
<span class="doccomment">/// Checked `Duration` multiplication. Computes `self * other`, returning</span>
<span class="doccomment">/// [`None`] if overflow occurred.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(Duration::new(0, 500_000_001).checked_mul(2), Some(Duration::new(1, 2)));</span>
<span class="doccomment">/// assert_eq!(Duration::new(std::u64::MAX - 1, 0).checked_mul(2), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_checked_ops"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">checked_mul</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span> {
<span class="comment">// Multiply nanoseconds as u64, because it cannot overflow that way.</span>
<span class="kw">let</span> <span class="ident">total_nanos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">nanos</span> <span class="kw">as</span> <span class="ident">u64</span> <span class="op">*</span> <span class="ident">rhs</span> <span class="kw">as</span> <span class="ident">u64</span>;
<span class="kw">let</span> <span class="ident">extra_secs</span> <span class="op">=</span> <span class="ident">total_nanos</span> <span class="op">/</span> (<span class="ident">NANOS_PER_SEC</span> <span class="kw">as</span> <span class="ident">u64</span>);
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> (<span class="ident">total_nanos</span> <span class="op">%</span> (<span class="ident">NANOS_PER_SEC</span> <span class="kw">as</span> <span class="ident">u64</span>)) <span class="kw">as</span> <span class="ident">u32</span>;
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">secs</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">secs</span>
.<span class="ident">checked_mul</span>(<span class="ident">rhs</span> <span class="kw">as</span> <span class="ident">u64</span>)
.<span class="ident">and_then</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">s</span>.<span class="ident">checked_add</span>(<span class="ident">extra_secs</span>)) {
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">nanos</span> <span class="op"><</span> <span class="ident">NANOS_PER_SEC</span>);
<span class="prelude-val">Some</span>(<span class="ident">Duration</span> {
<span class="ident">secs</span>: <span class="ident">secs</span>,
<span class="ident">nanos</span>: <span class="ident">nanos</span>,
})
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
<span class="doccomment">/// Checked `Duration` division. Computes `self / other`, returning [`None`]</span>
<span class="doccomment">/// if `other == 0`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Basic usage:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// assert_eq!(Duration::new(2, 0).checked_div(2), Some(Duration::new(1, 0)));</span>
<span class="doccomment">/// assert_eq!(Duration::new(1, 0).checked_div(2), Some(Duration::new(0, 500_000_000)));</span>
<span class="doccomment">/// assert_eq!(Duration::new(2, 0).checked_div(0), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_checked_ops"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">checked_div</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span> {
<span class="kw">if</span> <span class="ident">rhs</span> <span class="op">!=</span> <span class="number">0</span> {
<span class="kw">let</span> <span class="ident">secs</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">secs</span> <span class="op">/</span> (<span class="ident">rhs</span> <span class="kw">as</span> <span class="ident">u64</span>);
<span class="kw">let</span> <span class="ident">carry</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">secs</span> <span class="op">-</span> <span class="ident">secs</span> <span class="op">*</span> (<span class="ident">rhs</span> <span class="kw">as</span> <span class="ident">u64</span>);
<span class="kw">let</span> <span class="ident">extra_nanos</span> <span class="op">=</span> <span class="ident">carry</span> <span class="op">*</span> (<span class="ident">NANOS_PER_SEC</span> <span class="kw">as</span> <span class="ident">u64</span>) <span class="op">/</span> (<span class="ident">rhs</span> <span class="kw">as</span> <span class="ident">u64</span>);
<span class="kw">let</span> <span class="ident">nanos</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">nanos</span> <span class="op">/</span> <span class="ident">rhs</span> <span class="op">+</span> (<span class="ident">extra_nanos</span> <span class="kw">as</span> <span class="ident">u32</span>);
<span class="macro">debug_assert</span><span class="macro">!</span>(<span class="ident">nanos</span> <span class="op"><</span> <span class="ident">NANOS_PER_SEC</span>);
<span class="prelude-val">Some</span>(<span class="ident">Duration</span> { <span class="ident">secs</span>: <span class="ident">secs</span>, <span class="ident">nanos</span>: <span class="ident">nanos</span> })
} <span class="kw">else</span> {
<span class="prelude-val">None</span>
}
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Add</span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">Duration</span>;
<span class="kw">fn</span> <span class="ident">add</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="self">self</span>.<span class="ident">checked_add</span>(<span class="ident">rhs</span>).<span class="ident">expect</span>(<span class="string">"overflow when adding durations"</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"time_augmented_assignment"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">AddAssign</span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">add_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="kw-2">*</span><span class="self">self</span> <span class="op">+</span> <span class="ident">rhs</span>;
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Sub</span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">Duration</span>;
<span class="kw">fn</span> <span class="ident">sub</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="self">self</span>.<span class="ident">checked_sub</span>(<span class="ident">rhs</span>).<span class="ident">expect</span>(<span class="string">"overflow when subtracting durations"</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"time_augmented_assignment"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">SubAssign</span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">sub_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">Duration</span>) {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="kw-2">*</span><span class="self">self</span> <span class="op">-</span> <span class="ident">rhs</span>;
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Mul</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">Duration</span>;
<span class="kw">fn</span> <span class="ident">mul</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="self">self</span>.<span class="ident">checked_mul</span>(<span class="ident">rhs</span>).<span class="ident">expect</span>(<span class="string">"overflow when multiplying duration by scalar"</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"time_augmented_assignment"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">MulAssign</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">mul_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="kw-2">*</span><span class="self">self</span> <span class="op">*</span> <span class="ident">rhs</span>;
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.3.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Div</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">type</span> <span class="ident">Output</span> <span class="op">=</span> <span class="ident">Duration</span>;
<span class="kw">fn</span> <span class="ident">div</span>(<span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="self">self</span>.<span class="ident">checked_div</span>(<span class="ident">rhs</span>).<span class="ident">expect</span>(<span class="string">"divide by zero error when dividing duration by scalar"</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"time_augmented_assignment"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">DivAssign</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">div_assign</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">rhs</span>: <span class="ident">u32</span>) {
<span class="kw-2">*</span><span class="self">self</span> <span class="op">=</span> <span class="kw-2">*</span><span class="self">self</span> <span class="op">/</span> <span class="ident">rhs</span>;
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_sum"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">Sum</span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">sum</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span><span class="ident">Duration</span><span class="op">>></span>(<span class="ident">iter</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="ident">iter</span>.<span class="ident">fold</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>), <span class="op">|</span><span class="ident">a</span>, <span class="ident">b</span><span class="op">|</span> <span class="ident">a</span> <span class="op">+</span> <span class="ident">b</span>)
}
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"duration_sum"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.16.0"</span>)]</span>
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">Sum</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Duration</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Duration</span> {
<span class="kw">fn</span> <span class="ident">sum</span><span class="op"><</span><span class="ident">I</span>: <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span><span class="op">=</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Duration</span><span class="op">>></span>(<span class="ident">iter</span>: <span class="ident">I</span>) <span class="op">-></span> <span class="ident">Duration</span> {
<span class="ident">iter</span>.<span class="ident">fold</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>), <span class="op">|</span><span class="ident">a</span>, <span class="ident">b</span><span class="op">|</span> <span class="ident">a</span> <span class="op">+</span> <span class="kw-2">*</span><span class="ident">b</span>)
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">Duration</span>;
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">creation</span>() {
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>) <span class="op">!=</span> <span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">0</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">2</span>),
<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">3</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">10</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">4</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">4</span>, <span class="number">10</span> <span class="op">*</span> <span class="number">1_000_000</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">4000</span>), <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">4</span>, <span class="number">0</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">secs</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>).<span class="ident">as_secs</span>(), <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>).<span class="ident">as_secs</span>(), <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">999</span>).<span class="ident">as_secs</span>(), <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">1001</span>).<span class="ident">as_secs</span>(), <span class="number">1</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">nanos</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>).<span class="ident">subsec_nanos</span>(), <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">5</span>).<span class="ident">subsec_nanos</span>(), <span class="number">5</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1_000_000_001</span>).<span class="ident">subsec_nanos</span>(), <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_secs</span>(<span class="number">1</span>).<span class="ident">subsec_nanos</span>(), <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">999</span>).<span class="ident">subsec_nanos</span>(), <span class="number">999</span> <span class="op">*</span> <span class="number">1_000_000</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">1001</span>).<span class="ident">subsec_nanos</span>(), <span class="number">1</span> <span class="op">*</span> <span class="number">1_000_000</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">add</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_000</span>) <span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">1</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">checked_add</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>).<span class="ident">checked_add</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>)),
<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_000</span>).<span class="ident">checked_add</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>)),
<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>).<span class="ident">checked_add</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(::<span class="ident">u64</span>::<span class="ident">MAX</span>, <span class="number">0</span>)), <span class="prelude-val">None</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">sub</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_000</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>),
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">999_999_999</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">checked_sub</span>() {
<span class="kw">let</span> <span class="ident">zero</span> <span class="op">=</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>);
<span class="kw">let</span> <span class="ident">one_nano</span> <span class="op">=</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>);
<span class="kw">let</span> <span class="ident">one_sec</span> <span class="op">=</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">one_nano</span>.<span class="ident">checked_sub</span>(<span class="ident">zero</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">one_sec</span>.<span class="ident">checked_sub</span>(<span class="ident">one_nano</span>),
<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">999_999_999</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">zero</span>.<span class="ident">checked_sub</span>(<span class="ident">one_nano</span>), <span class="prelude-val">None</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">zero</span>.<span class="ident">checked_sub</span>(<span class="ident">one_sec</span>), <span class="prelude-val">None</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span> <span class="attribute">#[<span class="ident">should_panic</span>]</span>
<span class="kw">fn</span> <span class="ident">sub_bad1</span>() {
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span> <span class="attribute">#[<span class="ident">should_panic</span>]</span>
<span class="kw">fn</span> <span class="ident">sub_bad2</span>() {
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>) <span class="op">-</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">mul</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>) <span class="op">*</span> <span class="number">2</span>, <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">2</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">1</span>) <span class="op">*</span> <span class="number">3</span>, <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">3</span>, <span class="number">3</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>) <span class="op">*</span> <span class="number">4</span>, <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2</span>, <span class="number">4</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>) <span class="op">*</span> <span class="number">4000</span>,
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2000</span>, <span class="number">4000</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">checked_mul</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>).<span class="ident">checked_mul</span>(<span class="number">2</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">2</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">1</span>).<span class="ident">checked_mul</span>(<span class="number">3</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">3</span>, <span class="number">3</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>).<span class="ident">checked_mul</span>(<span class="number">4</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2</span>, <span class="number">4</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_001</span>).<span class="ident">checked_mul</span>(<span class="number">4000</span>),
<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2000</span>, <span class="number">4000</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(::<span class="ident">u64</span>::<span class="ident">MAX</span> <span class="op">-</span> <span class="number">1</span>, <span class="number">0</span>).<span class="ident">checked_mul</span>(<span class="number">2</span>), <span class="prelude-val">None</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">div</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">1</span>) <span class="op">/</span> <span class="number">2</span>, <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">1</span>) <span class="op">/</span> <span class="number">3</span>, <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">333_333_333</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">99</span>, <span class="number">999_999_000</span>) <span class="op">/</span> <span class="number">100</span>,
<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">999_999_990</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">checked_div</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2</span>, <span class="number">0</span>).<span class="ident">checked_div</span>(<span class="number">2</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">1</span>, <span class="number">0</span>).<span class="ident">checked_div</span>(<span class="number">2</span>), <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">500_000_000</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">2</span>, <span class="number">0</span>).<span class="ident">checked_div</span>(<span class="number">0</span>), <span class="prelude-val">None</span>);
}
}
</pre>
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