uTools-Manuals/docs/c/ldexp.html

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<h1>数学函数 - ldexp</h1>
<p>原型extern float ldexp(float x, int exp);</p>
<p>用法:#include &lt;math.h></p>
<p>功能:装载浮点数。</p>
<p>说明返回x*2^exp的值。</p>
举例:<pre><code class="language-c">
// ldexp.c
#include &lt;syslib.h>
#include &lt;math.h>
main()
{
float x;
clrscr(); // clear screen
textmode(0x00); // 6 lines per LCD screen
x=ldexp(1.0,6); // 1.0*2^6
printf("2^6=%.2f",x);
getchar();
return 0;
}
</code></pre>相关函数:<a href="frexp.html">frexp</a>,<a href="modf.html">modf</a>