modf returns 1 as the fractional:

Question

I have this static method, it receives a double and \"cuts\" its fractional tail leaving two digits after the dot. works almost all the time. I have noticed that when i

Answer 1

Here is a way without rounding:

double double_cut(double d)
{
    long long x = d * 100;
    return x/100.0;
}

Even if you want rounding according to 3rd digit after decimal point, here is a solution:

double double_cut_round(double d)
{
    long long x = d * 1000;

    if (x > 0)
        x += 5;
    else
        x -= 5;

    return x / 1000.0;
}