摘要：
#include <stdio.h>#include <stdlib.h> int main(){ int i; float a=0.2; float f=0.49; float b = 0.5; float e = 0.51; float c=0.6; float k=0.99; float g = 1.0; float h = 1.1; printf("0.2 : %d...
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摘要：
http://www.cppblog.com/prayer/archive/2008/08/21/59572.html udelay(unsigned long usecs);mdelay(unsigned long msecs);前者用软件循环指定的微妙数，后者调用前者达到延迟毫秒级。udelay 函数只能用于获取较短的时间延迟，因为loops_per_second值的精度只有8位，所以，当计算...
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