test_div.c

定点除法器程序

#include "math.h"

#define Q 30

void main()
{
	Signed_1b31 quot_frac,resdual, dividend, divisor;
	SignedInt32 quot_int, quot;

	printf("test SL1_DIV_31_Int\n");
	dividend=-5;
	divisor=3;
	SL1_DIV_31_Int(&quot_int,&resdual,dividend,divisor);
	printf("dividend=%d,divisor=%d\n",dividend,divisor);
	printf("quot_int=%d,resdual=%d\n",quot_int,resdual);

	printf("test SL1_DIV_31\n");
	SL1_DIV_31(&quot_frac,resdual,divisor);
	printf("quot_frac=%d\n",quot_frac);

	quot=(quot_int<<Q)+(quot_frac>>(31-Q));
	printf("Q value=%d,quotient=%d\n",Q,quot);

	Signed_1b15 quot_frac_15, dividend_15, divisor_15;
	dividend_15=-2;
	divisor_15=3;
	printf("test SL1_DIV\n");
	SL1_DIV(&quot_frac_15,dividend_15,divisor_15);
	printf("dividend_15=%d,divisor_15=%d\n",dividend_15,divisor_15);
	printf("quot_frac_15=%d\n",quot_frac_15);

	return;
}