?? fabs.html
字號:
<html>
<head>
<title>數學函數 - fabs</title>
<meta http-equiv="Content-Type" contents="text/html;charset=gb2312">
<link rel="stylesheet" href="clib.css">
</head>
<body>
<table border=0 cellpadding=0 cellspacing=0 bgcolor=#FFFFFF>
<tr><td width=150 valign=top>
<!-- begin left nav -->
<!-- begin logo -->
<table border=0 cellpadding=0 cellspacing=0 bgcolor=#FFFFFF>
<tbody>
<tr>
<td><a href="../clib.html"><img border=0 width=150 height=65 src="images/math.gif"></a></td>
</tr>
</tbody>
</table>
<!-- end logo -->
<!-- begin function list -->
<table border=0 cellpadding=5 cellspacing=0 bgcolor=#FFFFFF width=150>
<tbody>
<tr>
<td>
請選定要查看的函數
</td>
</tr>
<tr>
<td>
<ul>
<li><a href="abs.html">abs</a></li>
<li><a href="acos.html">acos</a></li>
<li><a href="asin.html">asin</a></li>
<li><a href="atan.html">atan</a></li>
<li><a href="atan2.html">atan2</a></li>
<li><a href="ceil.html">ceil</a></li>
<li><a href="cos.html">cos</a></li>
<li><a href="cosh.html">cosh</a></li>
<li><a href="exp.html">exp</a></li>
<font color=red>
<li><a href="fabs.html">fabs</a></li>
</font>
<li><a href="floor.html">floor</a></li>
<li><a href="fmod.html">fmod</a></li>
<li><a href="frexp.html">frexp</a></li>
<li><a href="hypot.html">hypot</a></li>
<li><a href="ldexp.html">ldexp</a></li>
<li><a href="log.html">log</a></li>
<li><a href="log10.html">log10</a></li>
<li><a href="modf.html">modf</a></li>
<li><a href="pow.html">pow</a></li>
<li><a href="pow10.html">pow10</a></li>
<li><a href="sin.html">sin</a></li>
<li><a href="sinh.html">sinh</a></li>
<li><a href="sqrt.html">sqrt</a></li>
<li><a href="tan.html">tan</a></li>
<li><a href="tanh.html">tanh</a></li>
</ul>
</td>
</tr>
<tr>
<td>目前共有25個函數</td>
</tr>
</tbody>
</table>
<!-- end function list -->
</td>
<td>
<table border=0 cellpadding=0 cellspacing=0 width=600 height=500>
<tbody>
<tr>
<td width=1 bgcolor=#649ACC><img border=0 width=1 height=1 src="images/null.gif"></td>
<td>
<!-- beging of middle part -->
<div>
<table border=0 cellpadding=0 cellspacing=0 width=100% height=500>
<tbody>
<tr><td height=1 width=1 bgcolor=#649ACC><img border=0 width=1 height=1 src="images/null.gif"></td></tr>
<tr><td height=62 valign=bottom><b><font size=5>fabs</font></b></td></tr>
<tr><td>
<table border=0 cellpadding=0 cellspacing=0 height=1 width=100%>
<tbody>
<tr>
<td height=1 width=150 bgcolor=#649ACC><img border=0 width=1 height=1 src="images/null.gif"></td>
<td height=1 bgcolor=#ffffff><img src="images/null.gif" border=0 width=1 height=1></td>
</tr>
</tbody>
</table>
</td></tr>
<tr><td>
<div>
<!-- begin main body -->
<table border=0 cellpadding=5 cellspacing=5>
<tr><td>
<pre>
原型：extern float fabs(float x);
用法：#include <math.h>
功能：求浮點數x的絕對值
說明：計算|x|, 當x不為負時返回x，否則返回-x
舉例：
// fabs.c
#include <syslib.h>
#include <math.h>
main()
{
float x;
clrscr(); // clear screen
textmode(0x00); // 6 lines per LCD screen
x=-74.12;
printf("|%f|=%f\n",x,fabs(x));
x=0;
printf("|%f|=%f\n",x,fabs(x));
x=74.12;
printf("|%f|=%f\n",x,fabs(x));
getchar();
return 0;
}
相關函數：<a href="abs.html">abs</a>
</pre>
</td></tr>
</table>
<!-- end main body -->
</td></tr>
<tr><td height=1 width=1 bgcolor=#649ACC><img border=0 width=1 height=1 src="images/null.gif"></td></tr>
</tbody>
</table>
</div>
<!-- end of middle part -->
</td>
<td width=1 bgcolor=#649ACC><img border=0 width=1 height=1 src="images/null.gif"></td>
</tr>
</tbody>
</table>
</td>
</tr>
</table>
</body>
</html>
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -