fixed point code

[mujjingun]

#include <bits/stdc++.h>
typedef unsigned int fixed_t;
static int sign(fixed_t a)
{
    if (a & 0x80000000u) {
        return -1;
    }
    return 1;
}
static fixed_t conv(int a) {
  if (a < 0) {
    return ((-a) << 14) | 0x80000000u;
  }
  return a << 14;
}
static fixed_t getint(fixed_t a) {
  if (sign(a) < 0) {
    return -((a & 0x7fffffffu) >> 14);
  }
  return a >> 14;
}
static fixed_t getfrac(fixed_t a) {
  int r = a & 0x3fff;
  return ((r * 10) >> 14) * 10 + ((r * 100) >> 14) % 10;
}
static fixed_t add(fixed_t a, fixed_t b)
{
    if (sign(a) > 0 && sign(b) > 0) {
        return a + b;
    }
    if (sign(a) < 0 && sign(b) > 0) {
        int t = a;
        a = b;
        b = t;
    }
    if (sign(a) > 0 && sign(b) < 0) {
        int r = a - (b & 0x7fffffffu);
        if (r < 0) {
            r = -r;
            r |= 0x80000000u;
        }
        return r;
    }
    a &= 0x7fffffffu;
    b &= 0x7fffffffu;
    return (a + b) | 0x80000000u;
}
static fixed_t sub(fixed_t a, fixed_t b)
{
    return add(a, b ^ 0x80000000u);
}
static fixed_t mul(fixed_t a, fixed_t b)
{
    int sgn = sign(a) * sign(b);
    a &= 0x7fffffffu;
    b &= 0x7fffffffu;
    uint64_t r = (uint64_t)a * (uint64_t)b;
    r >>= 14;
    if (sgn < 0) {
        r |= 0x80000000u;
    }
    return (fixed_t)r;
}
static fixed_t div(fixed_t a, fixed_t b)
{
    int sgn = sign(a) * sign(b);
    a &= 0x7fffffffu;
    b &= 0x7fffffffu;
    fixed_t r = (fixed_t)((((uint64_t)a) << 14) / b);
    if (sgn < 0) {
        r |= 0x80000000u;
    }
    return r;
}

void print(fixed_t t) {
    printf("%d.%02d\n", getint(t), getfrac(t));
}
int main()
{
    while (true) {
        int aa, bb;
        scanf("%d %d", &aa, &bb);
        fixed_t a = conv(aa);
        fixed_t b = conv(bb);
        fixed_t c = div(a, b);
        print(c);
    }
}