oxipng/doc/bitflags/__core/intrinsics/fn.offset.html
2016-05-04 10:41:29 -04:00

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<h1 class='fqn'><span class='in-band'>Function <a href='../../index.html'>bitflags</a>::<wbr><a href='../index.html'>__core</a>::<wbr><a href='index.html'>intrinsics</a>::<wbr><a class='fn' href=''>offset</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a id='src-5377' class='srclink' href='https://doc.rust-lang.org/nightly/core/intrinsics//fn.offset.html?gotosrc=5377' title='goto source code'>[src]</a></span></h1>
<pre class='rust fn'>pub unsafe extern &quot;rust-intrinsic&quot; fn offset&lt;T&gt;(dst: <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.pointer.html'>*const T</a>, offset: <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.isize.html'>isize</a>) -&gt; <a class='primitive' href='https://doc.rust-lang.org/nightly/bitflags/primitive.pointer.html'>*const T</a></pre><div class='stability'><em class='stab unstable'>Unstable (<code>core_intrinsics</code>)<p>: intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library</p>
</em></div><div class='docblock'><p>Calculates the offset from a pointer.</p>
<p>This is implemented as an intrinsic to avoid converting to and from an
integer, since the conversion would throw away aliasing information.</p>
<h1 id='safety' class='section-header'><a href='#safety'>Safety</a></h1>
<p>Both the starting and resulting pointer must be either in bounds or one
byte past the end of an allocated object. If either pointer is out of
bounds or arithmetic overflow occurs then any further use of the
returned value will result in undefined behavior.</p>
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