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<h2 class="sectionedit1"><a name="frexp" id="frexp">frexp</a></h2>
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<p>
Sözdizimi:
</p>
<pre class="cpp code cpp">    <span class="co2">#include &lt;cmath&gt;</span>
    <span class="kw4">double</span> <span class="kw3">frexp</span><span class="br0">&#40;</span> <span class="kw4">double</span> num, <span class="kw4">int</span><span class="sy2">*</span> <span class="kw3">exp</span> <span class="br0">&#41;</span><span class="sy4">;</span></pre>
<p>

<strong>frexp()</strong> fonksiyonu <em>num</em> sayısını iki kısma ayırmaya yarar: ilki (fonksiyonun geri döndüğü değer) 0.5 ile 1 arasında bir mantis ve ikincisi ise <em>exp</em> değişkeniyle dönen, üs değeri. (mantis, bir logaritmanın ondalık kısmına verilen isimdir. -ed.)
Bilimsel gösterimle şu şekilde gösterilir:
</p>
<pre class="cpp code cpp">     sayi <span class="sy1">=</span> mantis <span class="sy2">*</span> <span class="br0">&#40;</span><span class="nu0">2</span> <span class="sy3">^</span> us<span class="br0">&#41;</span></pre>
<p>
C++ ayrıca aşağıdaki yüklenmiş biçimleri de sağlamaktadır:

</p>
<pre class="cpp code cpp">    <span class="co2">#include &lt;cmath&gt;</span>
    <span class="kw4">float</span> <span class="kw3">frexp</span><span class="br0">&#40;</span> <span class="kw4">float</span> num, <span class="kw4">int</span><span class="sy2">*</span> <span class="kw3">exp</span> <span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// C99'daki frexpf() ile ayni</span>
    <span class="kw4">long</span> <span class="kw4">double</span> <span class="kw3">frexp</span><span class="br0">&#40;</span> <span class="kw4">long</span> <span class="kw4">double</span> num, <span class="kw4">int</span><span class="sy2">*</span> <span class="kw3">exp</span> <span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// C99'daki frexpl() ile ayni</span></pre>
<p>
İlgili başlıklar: <a href="http://www.cppreference.com/wiki/tr/numeric/c/ldexp" class="wikilink2" title="tr:numeric:c:ldexp" rel="nofollow">ldexp</a>, <a href="modf" class="wikilink1" title="tr:numeric:c:modf">modf</a>
</p>

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