Is the function program written correctly?

Question

C++ / C#

write a program for calculating a function on a given interval with a step of 0.2.

#define _USE_MATH_DEFINES
#include <iostream>
#include <math.h>


using namespace std;

double logic(double x);

int main() {

  for (double x = - M_PI/2; x <= M_PI; x += 0.2) {
    cout << "y = " << logic(x) << endl;
  }

  return 0;
}

double logic(double x) {

  if (x > 2) {
    x = sqrt(log(pow(x,2))-1);
  }
  else if (x >= 0 && x <= 2) {
    x = -2 * pow(x, 3);
  }
  else if (x < 0) {
    x = exp(sin(x));
  }

  return x;
}

Answer 1

At least there is an error here:
x = sqrt(log(pow(x,2))-1);