📄 stdmath_details.html
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <math.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>double frexp( double num, int *exp );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数将参数</span><i><span lang=EN-US>num</span></i><span
lang=EN-US> 分成两部分： 0.5 和1之间的尾数（由函数返回）并返回指数<i>exp</i>。转换成如下的科学计数法形式： </span></p>
<pre><span lang=EN-US><span style="mso-spacerun: yes"> </span>num = mantissa * (2 ^ exp)</span></pre>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#ldexp">ldexp()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="labs">labs</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
<table border=0 cellpadding=0 bgcolor="#ccccff" style='mso-cellspacing:1.5pt;
background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <stdlib.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>long labs( long num );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数返回参数</span><i><span lang=EN-US>num</span></i>的绝对值。
</p>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#abs">abs()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="ldexp">ldexp</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
<table border=0 cellpadding=0 bgcolor="#ccccff" style='mso-cellspacing:1.5pt;
background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <math.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>double ldexp( double num, int exp );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数返回参数</span><i><span lang=EN-US>num</span></i><span
lang=EN-US> * (2 ^ <i>exp</i>)。如果发生溢出返回<strong>HUGE_VAL。</strong> </span></p>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#frexp">frexp()</a> and <a href="#modf">modf()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="ldiv">ldiv</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
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background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <stdlib.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>ldiv_t ldiv( long numerator, long denominator );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数返回参数</span><i><span lang=EN-US>numerator</span></i><span
lang=EN-US> / <i>denominator</i>的商和余数。结构类型 <strong>ldiv_t</strong> 定义在stdlib.h中：
</span></p>
<pre><span lang=EN-US><span style="mso-spacerun: yes"> </span>long quot;<span
style='mso-tab-count:1'> </span>// 商数 </span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>long rem;<span
style='mso-tab-count:1'> </span>// 余数</span></pre>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#div">div()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="log">log</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
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background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <math.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>double log( double num );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数返回参数</span><i><span lang=EN-US>num</span></i>的自然对数。如果<i><span
lang=EN-US>num</span></i>为负<span lang=EN-US>,产生域错误；如果<i>num</i> 为零，产生范围错误。 </span></p>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#log10">log10()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="log10">log10</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
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background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <math.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>double log10( double num );</span></pre></td>
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<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数返回参数</span><i><span lang=EN-US>num</span></i>以<span
lang=EN-US>10为底的对数。如果<i>num</i>为负,产生域错误；如果<i>num</i> 为零，产生范围错误。</span></p>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>相关主题</span><span lang=EN-US>:</span></i><span lang=EN-US><br>
<strong><a href="#log">log()</a>. </strong></span></p>
<div class=MsoNormal align=center style='text-align:center;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US>
<hr size=2 width="100%" align=center>
</span></div>
<h2 style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
lang=EN-US><a name="modf">modf</a> </span></h2>
<p class=MsoNormal style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><i><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>语法</span><span lang=EN-US>:</span></i><span lang=EN-US> </span></p>
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background:#CCCCFF;mso-padding-alt:0cm 0cm 0cm 0cm'>
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<td style='padding:.75pt .75pt .75pt .75pt'><pre><span lang=EN-US><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>#include <math.h></span></pre><pre><span
lang=EN-US><span style="mso-spacerun: yes"> </span>double modf( double num, double *i );</span></pre></td>
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</table>
<p style='tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt'><span
style='mso-bidi-font-size:10.5pt'>功能： 函数将参数</span><i><span lang=EN-US>num</span></i><span
lang=EN-US> 分割为整数和小数，返回小数部分并将整数部分赋给<i>i</i>。 </span></p>
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