digits after comma when passing double variable to function

[Matthias]

Hello guys,

I have following problem, and I already searched in many different ones but couldn't find a solution.

Basically I have two double variables e.g. Coordinate x and y:

double x = 52.123456789;
double y = 8.123456789;

Now i pass these two variables to a function that expects two double values!

E.g.: Imagine there is a function Circle that expects two double varibles to draw a circle around the center of the coordinates

Circle(x,y);

The problem is, that somehow the coordinates are cut after 6 digits.
Something like that:
x = 52.1235;
y = 8.12346;

My question is not how to set the output to a certain amount of digits with std::cout.setprecision() and so on. I want to know if there is a possibility to fix the number of digits when you pass double variables to a function!?

Please help me with that!

Thanks and best regards, Matthias

[kbw]

The values aren't changed, they're passed as you've initialised them.

It's possible that you're not displaying them correctly, but that's just a display matter.

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
        double n = 123.12345678901234567890;

        cout << setprecision(25) << n << endl;
}

123.1234567890123514644074