Software Integer to Float conversion (This was just an exercise to understand floats better, it is not recommended you use this)

int_to_float.c

uint8_t gen_exp(int32_t num) {
    uint32_t mask = 1<<31;
    uint8_t cnt = 31;
    for(; cnt>0; cnt--) {
        if(mask & num) break;
        mask >>= 1;
    }
    return cnt;
}

float int_to_float(int32_t x) {
    if(x == 0) return 0.0f;
    uint32_t my_float = 0;

    if(x < 0) my_float |= (1<<31), x = -x;
    uint8_t exp = gen_exp(x);
    my_float |= (exp+127) << 23;
    if(exp > 23) {
        x >>= exp - 24;
        if(x&1) x++;
        x >>= 1;
    } else x <<= (23-exp);
    my_float |= x & ((1<<23) - 1);

    return *(float *) &my_float;
}