main.c

用PIC单片机实现64位整数的运算,在控制算法中经常要用到

#include	<pic.h>
unsigned char dispbuff2[16]={"000.000.000"};
const unsigned long cons[]={100000000,10000000,1000000,100000,10000,1000,100,10};
__CONFIG(HS & WDTDIS & PWRTEN & BORDIS & LVPDIS & WRTEN & UNPROTECT);


//主程序*/
void main()
{
unsigned char i,j;
unsigned long disp_hrequency;
disp_hrequency=83456789;



for(i=0;i<2;i++)dispbuff2[i]=' ';
dispbuff2[2]=0x30;
for(i=0;i<3;i++)
	{	if(disp_hrequency>=cons[i])
		{
		disp_hrequency=disp_hrequency-cons[i];
		if(i==0)dispbuff2[1]=0x30;
		dispbuff2[i]=0x31;
		}
		while(disp_hrequency>=cons[i])
		{
		disp_hrequency=disp_hrequency-cons[i];
		dispbuff2[i]=dispbuff2[i]+1;
		}
	}
for(i=4;i<7;i++)dispbuff2[i]=0x30;
for(i=4;i<7;i++)
	{
		while(disp_hrequency>=cons[i-1])
		{
		disp_hrequency=disp_hrequency-cons[i-1];
		dispbuff2[i]=dispbuff2[i]+1;
		}
	}
for(i=8;i<11;i++)dispbuff2[i]=0x30;
for(i=8;i<10;i++)
	{
		while(disp_hrequency>=cons[i-2])
		{
		disp_hrequency=disp_hrequency-cons[i-2];
		dispbuff2[i]=dispbuff2[i]+1;
		}
	}
dispbuff2[10]=dispbuff2[10]+(unsigned char)disp_hrequency;
i=9;
disp_hrequency=123456789;
dispbuff2[0]=disp_hrequency/100000000;
disp_hrequency=disp_hrequency-100000000*dispbuff2[0];
dispbuff2[1]=disp_hrequency/10000000;
disp_hrequency=disp_hrequency-10000000*dispbuff2[1];
dispbuff2[2]=disp_hrequency/1000000;
disp_hrequency=disp_hrequency-1000000*dispbuff2[2];
dispbuff2[4]=disp_hrequency/100000;
disp_hrequency=disp_hrequency-100000*dispbuff2[4];
dispbuff2[5]=disp_hrequency/10000;
disp_hrequency=disp_hrequency-10000*dispbuff2[5];
dispbuff2[6]=disp_hrequency/1000;
disp_hrequency=disp_hrequency-1000*dispbuff2[6];
dispbuff2[8]=disp_hrequency/100;
disp_hrequency=disp_hrequency-100*dispbuff2[8];
dispbuff2[9]=disp_hrequency/10;
dispbuff2[10]=disp_hrequency;
i=10;
}