ft.h

定点数实现浮点数的运算

#include"math.h"
class Float
{public:
      int jie;
      double wei;
      int static ji;
	  void standard();
};
void Float::standard()
{   if(wei!=0.0)
{	for(;fabs(wei)>=1;)
	{jie++;wei/=10;}	
	for(;fabs(wei)<0.1;)
	{jie--;wei*=10;}
}
	else jie=0;
}