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<title>div, ldiv, lldiv, imaxdiv</title>
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<h1 id="firstHeading" class="firstHeading">div, ldiv, lldiv, imaxdiv</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="c.html">c</a>&lrm; | <a href="c-numeric.html">numeric</a>&lrm; | <a href="c-numeric-math.html">math</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code>&lt;stdlib.h&gt;</code></div>
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<div><span class="mw-geshi c source-c">div_t &nbsp; &nbsp; div<span class="br0">(</span> <span class="kw4">int</span> x, <span class="kw4">int</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
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<div><span class="mw-geshi c source-c">ldiv_t &nbsp; &nbsp;ldiv<span class="br0">(</span> <span class="kw4">long</span> x, <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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<div><span class="mw-geshi c source-c">lldiv_t &nbsp; lldiv<span class="br0">(</span> <span class="kw4">long</span> <span class="kw4">long</span> x, <span class="kw4">long</span> <span class="kw4">long</span> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
<td><span class="t-mark-rev t-since-c99">(C99 &#36215;)</span></td>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code>&lt;inttypes.h&gt;</code></div>
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<div><span class="mw-geshi c source-c">imaxdiv_t imaxdiv<span class="br0">(</span> <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> x, <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> y <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(4)</td>
<td><span class="t-mark-rev t-since-c99">(C99 &#36215;)</span></td>
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<td></td>
<td></td>
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<p>&#35745;&#31639;&#20998;&#23376; <code>x</code> &#38500;&#20197;&#20998;&#27597; <code>y</code> &#30340;&#21830;&#21644;&#20313;&#25968;&#12290;</p>
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<p>&#21516;&#26102;&#35745;&#31639;&#21830;&#21644;&#20313;&#25968;&#12290;&#21830;&#20026;&#33293;&#24323;&#23567;&#25968;&#37096;&#20998;&#65288;&#21521;&#38646;&#21462;&#25972;&#65289;&#30340;&#20195;&#25968;&#21830;&#12290;&#20313;&#25968;&#28385;&#36275; <span class="t-c"><span class="mw-geshi c source-c">quot <span class="sy2">*</span> y <span class="sy2">+</span> rem <span class="sy1">==</span> x</span></span> &#30340;&#20540;&#12290;</p>
</td>
<td><span class="t-mark-rev t-until-c99">(C99 &#21069;)</span></td>
</tr>
<tr class="t-rev t-since-c99">
<td>
<p>&#21516;&#26102;&#35745;&#31639;&#21830;&#65288;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi c source-c">x<span class="sy2">/</span>y</span></span> &#30340;&#32467;&#26524;&#65289;&#21644;&#20313;&#25968;&#65288;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi c source-c">x<span class="sy2">%</span>y</span></span> &#30340;&#32467;&#26524;&#65289;&#12290;</p>
</td>
<td><span class="t-mark-rev t-since-c99">(C99 &#36215;)</span></td>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td>x, y</td>
<td>-</td>
<td>&#25972;&#25968;&#20540;</td>
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</table>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#33509;&#20313;&#25968;&#21644;&#21830;&#37117;&#33021;&#34920;&#31034;&#25104;&#23545;&#24212;&#31867;&#22411;&#30340;&#23545;&#35937;&#65288;&#20998;&#21035;&#20026; <code>div_t</code> &#12289; <code>ldiv_t</code> &#12289; <code>lldiv_t</code> &#12289; <code>imaxdiv_t</code> &#65289;&#65292;&#21017;&#23558;&#20004;&#32773;&#20316;&#20026;&#36820;&#22238;&#20316;&#20026;&#23450;&#20041;&#22914;&#19979;&#30340; <code>div_t</code> &#12289; <code>ldiv_t</code> &#12289; <code>lldiv_t</code> &#12289; <code>imaxdiv_t</code> &#31867;&#22411;&#23545;&#35937;&#36820;&#22238;&#65306;</p>
<div class="t-member">
<h2><span class="mw-headline" id="div_t">div_t</span></h2>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> div_t <span class="br0">{</span> <span class="kw4">int</span> quot<span class="sy4">;</span> <span class="kw4">int</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
<p>&#25110;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> div_t <span class="br0">{</span> <span class="kw4">int</span> rem<span class="sy4">;</span> <span class="kw4">int</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
</div>
<div class="t-member">
<h2><span class="mw-headline" id="ldiv_t">ldiv_t</span></h2>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> ldiv_t <span class="br0">{</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
<p>&#25110;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> ldiv_t <span class="br0">{</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
</div>
<div class="t-member">
<h2><span class="mw-headline" id="lldiv_t">lldiv_t</span></h2>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> lldiv_t <span class="br0">{</span> <span class="kw4">long</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="kw4">long</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
<p>&#25110;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> lldiv_t <span class="br0">{</span> <span class="kw4">long</span> <span class="kw4">long</span> rem<span class="sy4">;</span> <span class="kw4">long</span> <span class="kw4">long</span> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
</div>
<div class="t-member">
<h2><span class="mw-headline" id="imaxdiv_t">imaxdiv_t</span></h2>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> imaxdiv_t <span class="br0">{</span> <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> quot<span class="sy4">;</span> <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> rem<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
<p>&#25110;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="kw1">struct</span> imaxdiv_t <span class="br0">{</span> <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> rem<span class="sy4">;</span> <a href="c-types-integer.html"><span class="kw118">intmax_t</span></a> quot<span class="sy4">;</span> <span class="br0">}</span><span class="sy4">;</span></pre></div>
</div>
</div>
<p><br />
&#33509;&#20313;&#25968;&#25110;&#21830;&#26080;&#27861;&#34920;&#31034;&#65292;&#21017;&#34892;&#20026;&#26410;&#23450;&#20041;&#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">&#27880;&#24847;</span></h3>
<p>C99 &#21069;&#65292;&#33509;&#36816;&#31639;&#25968;&#20043;&#19968;&#20026;&#36127;&#65292;&#21017;&#20869;&#24314;&#30340;&#38500;&#27861;&#21644;&#21462;&#20313;&#36816;&#31639;&#31526;&#20013;&#30340;&#21830;&#21462;&#25972;&#26041;&#21521;&#21644;&#20313;&#25968;&#31526;&#21495;&#26159;&#23454;&#29616;&#23450;&#20041;&#30340;&#65292;&#20294;&#23427;&#22312; <code>div</code> &#21644; <code>ldiv</code> &#20013;&#33391;&#22909;&#23450;&#20041;&#12290;</p>
<p>&#22810;&#25968;&#24179;&#21488;&#19978;&#65292;&#21333;&#26465; CPU &#25351;&#20196;&#33719;&#24471;&#21830;&#21644;&#20313;&#25968;&#65292;&#32780;&#27492;&#20989;&#25968;&#21487;&#20197;&#27963;&#29992;&#36825;&#28857;&#65292;&#23613;&#31649;&#32534;&#35793;&#22120;&#36890;&#24120;&#33021;&#22312;&#36866;&#21512;&#22788;&#21512;&#24182;&#20020;&#36817;&#30340; / &#21644;&nbsp;% &#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="c source-c">
<pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;math.h&gt;</span>
<span class="co2">#include &lt;stdlib.h&gt;</span>
<span class="co1">// &#21482;&#20026;&#28436;&#31034;&#65306;&#19981;&#26816;&#26597;&#32531;&#20914;&#21306;&#28322;&#20986;</span>
<span class="kw4">void</span> itoa<span class="br0">(</span><span class="kw4">int</span> n, <span class="kw4">int</span> base, <span class="kw4">char</span><span class="sy2">*</span> buf<span class="br0">)</span>
<span class="br0">{</span>
div_t dv <span class="sy1">=</span> <span class="br0">{</span>.<span class="me1">quot</span> <span class="sy1">=</span> n<span class="br0">}</span><span class="sy4">;</span>
<span class="kw4">char</span><span class="sy2">*</span> p <span class="sy1">=</span> buf<span class="sy4">;</span>
<span class="kw1">do</span> <span class="br0">{</span>
dv <span class="sy1">=</span> div<span class="br0">(</span>dv.<span class="me1">quot</span>, base<span class="br0">)</span><span class="sy4">;</span>
<span class="sy2">*</span>p<span class="sy2">++</span> <span class="sy1">=</span> <span class="st0">&quot;0123456789abcdef&quot;</span><span class="br0">[</span><a href="c-numeric-math-abs.html"><span class="kw641">abs</span></a><span class="br0">(</span>dv.<span class="me1">rem</span><span class="br0">)</span><span class="br0">]</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="kw1">while</span><span class="br0">(</span>dv.<span class="me1">quot</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>n<span class="sy1">&lt;</span><span class="nu0">0</span><span class="br0">)</span> <span class="sy2">*</span>p<span class="sy2">++</span> <span class="sy1">=</span> <span class="st0">&#39;-&#39;</span><span class="sy4">;</span>
<span class="sy2">*</span>p<span class="sy2">--</span> <span class="sy1">=</span> <span class="st0">&#39;<span class="es5">\0</span>&#39;</span><span class="sy4">;</span>
<span class="kw1">while</span><span class="br0">(</span>buf <span class="sy1">&lt;</span> p<span class="br0">)</span> <span class="br0">{</span> <span class="kw4">char</span> c <span class="sy1">=</span> <span class="sy2">*</span>p<span class="sy4">;</span> <span class="sy2">*</span>p<span class="sy2">--</span> <span class="sy1">=</span> <span class="sy2">*</span>buf<span class="sy4">;</span> <span class="sy2">*</span>buf<span class="sy2">++</span> <span class="sy1">=</span> c<span class="sy4">;</span> <span class="br0">}</span> <span class="co1">// &#21453;&#36716;</span>
<span class="br0">}</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">char</span> buf<span class="br0">[</span><span class="nu0">100</span><span class="br0">]</span><span class="sy4">;</span>
itoa<span class="br0">(</span><span class="nu0">12346</span>, <span class="nu0">10</span>, buf<span class="br0">)</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw849">printf</span></a><span class="br0">(</span><span class="st0">&quot;%s<span class="es1">\n</span>&quot;</span>, buf<span class="br0">)</span><span class="sy4">;</span>
itoa<span class="br0">(</span><span class="sy2">-</span><span class="nu0">12346</span>, <span class="nu0">10</span>, buf<span class="br0">)</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw849">printf</span></a><span class="br0">(</span><span class="st0">&quot;%s<span class="es1">\n</span>&quot;</span>, buf<span class="br0">)</span><span class="sy4">;</span>
itoa<span class="br0">(</span><span class="nu0">65535</span>, <span class="nu0">16</span>, buf<span class="br0">)</span><span class="sy4">;</span>
<a href="c-io-fprintf.html"><span class="kw849">printf</span></a><span class="br0">(</span><span class="st0">&quot;%s<span class="es1">\n</span>&quot;</span>, buf<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">12346
-12346
ffff</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E5.BC.95.E7.94.A8">&#24341;&#29992;</span></h3>
<div class="t-ref-std-11">
<ul>
<li>C11 &#26631;&#20934;&#65288;ISO/IEC 9899:2011&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>7.8.2.2 The imaxdiv function (p: 219)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>7.22.6.2 The div, ldiv and lldiv functions (p: 356)</li>
</ul>
</dd>
</dl>
<div class="t-ref-std-c99">
<ul>
<li>C99 &#26631;&#20934;&#65288;ISO/IEC 9899:1999&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>7.8.2.2 The imaxdiv function (p: 200)</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>7.20.6.2 The div, ldiv and lldiv functions (p: 320)</li>
</ul>
</dd>
</dl>
<div class="t-ref-std-c89">
<ul>
<li>C89/C90 &#26631;&#20934;&#65288;ISO/IEC 9899:1990&#65289;&#65306;</li>
</ul>
<dl>
<dd>
<ul>
<li>4.10 div_t, ldiv_t</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>4.10.6.2 The div function</li>
</ul>
</dd>
</dl>
<dl>
<dd>
<ul>
<li>4.10.6.4 The ldiv function</li>
</ul>
</dd>
</dl>
</div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="c-numeric-math-fmod.html"><span class="t-lines"><span>fmod</span><span>fmodf</span><span>fmodl</span></span></a></div>
<div><span class="t-lines"><span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>&#35745;&#31639;&#28014;&#28857;&#38500;&#27861;&#36816;&#31639;&#30340;&#20313;&#25968;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="c-numeric-math-remainder.html"><span class="t-lines"><span>remainder</span><span>remainderf</span><span>remainderl</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>&#35745;&#31639;&#28014;&#28857;&#38500;&#27861;&#36816;&#31639;&#30340;&#24102;&#31526;&#21495;&#20313;&#25968;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="c-numeric-math-remquo.html"><span class="t-lines"><span>remquo</span><span>remquof</span><span>remquol</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div>
</div>
</td>
<td>&#35745;&#31639;&#38500;&#27861;&#36816;&#31639;&#30340;&#24102;&#31526;&#21495;&#20313;&#25968;&#65292;&#20197;&#21450;&#21830;&#30340;&#21518;&#19977;&#20301;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
</tr>
</table>
</div>
</div>
</div>
<div class="visualClear"></div>
</div>
</div>
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