void test_decimal_separator()
{
	double aa = 1.253;
	string str = ftoa(aa);  // convert the numeric to string
	printf("aa = %s\n", str);
}

string wobble(double x)
{
	// take double, let sprintf round and replace period by comma
	// return the string
	int i =0;
	char safe[16];
	
	sprintf(safe,"%.2f",x);
	
	for(i;i<16;i++)
	{
		if(safe[i] == '.')
			safe[i] = ',';
		if(safe[i] == '\0')
			break;
	}
	return safe;
}

void dd(double aa = 1.253)
{
  string str = ftoa(aa, ".2");  //LT format of 2 decimal
  printf("aa = %s\n", str);
}