mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-08 06:55:36 +08:00
35 lines
705 B
HTML
35 lines
705 B
HTML
<h1>数学函数 - ldexp</h1>
|
||
|
||
|
||
<p>原型:extern float ldexp(float x, int exp);</p>
|
||
|
||
<p>用法:#include <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 <syslib.h>
|
||
#include <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>
|
||
|