test.c

#include<stdio.h>
#include "fx_s4716_double.h"

extern void fx_to_double(fx_s4716 a);
extern void double_to_fx(double a);
extern void fx_add(fx_s4716 a, fx_s4716 b);
extern void fx_sub(fx_s4716 a, fx_s4716 b);
extern void fx_mul(fx_s4716 a, fx_s4716 b);
extern void fx_div(fx_s4716 a, fx_s4716 b);
extern void fx_pi();
extern void fx_inv_pi();
extern void fx_sqrt(fx_s4716 a);
extern void fx_pow(fx_s4716 a);

int main()
{
    fx_s4716 a,b;
    double c;
    int option;
    printf("This is program to test fixed point arithmetic\n");
    printf("   OPTION \n");
    printf("0. add \n");
    printf("1. subtract \n");
    printf("2. multiply \n");
    printf("3. divide \n");
    printf("4. square root \n");
    printf("5. power \n");
    printf("6. print PI \n");
    printf("7. print inverse PI \n");
    printf("8. fix to double \n");
    printf("9. double to fix \n");
    printf("10. quit\n\n");

    printf("Type option : ");
    fflush(stdout);
    scanf("%d", &option);
    switch (option)
    {
    case 0:
        printf("Input two number : "); fflush(stdout);
        scanf("%lld %lld", &a, &b);
        fx_add(a, b);
        break;
    case 1:
        printf("Input two number : "); fflush(stdout);
        scanf("%lld %lld", &a, &b);
        fx_sub(a, b);
        break;
    case 2:
        printf("Input two number : "); fflush(stdout);
        scanf("%lld %lld", &a, &b);
        fx_mul(a, b);
        break;
    case 3:
        printf("Input two number : "); fflush(stdout);
        scanf("%lld %lld", &a, &b);
        fx_div(a, b);
        break;
    case 4:
        printf("Input one number : "); fflush(stdout);
        scanf("%lld", &a);
        fx_sqrt(a);
        break;
    case 5:
        printf("Input one number : "); fflush(stdout);
        scanf("%lld", &a);
        fx_pow(a);
        break;
    case 6:
        fx_pi();
        break;
    case 7:
        fx_inv_pi();
        break;
    case 8:
        printf("Input fix number : "); fflush(stdout);
        scanf("%lld",&a);
        fx_to_double(a);
        break;
    case 9:
        printf("Input double number : "); fflush(stdout);
        scanf("%lf",&c);
        double_to_fx(c);
        break;
    default:
        break;
    }
}