Example 1:
> "Hello" == "Hello";
true
> "Hello" == "Salut";
false
> "Hello" == 5;
false
> 5 + x == 5 + x;
true
Example 2:
> 1 == exp(0);
true
> asin(1) * 2 == pi;
true
> exp(5) == log(4);
false
Example 3:
> sin(pi/6) == 1/2 * sqrt(3);
false
Example 4:
> prec = 12;
The precision has been set to 12 bits.
> 16384.1 == 16385.1;
true
Example 5:
> error == error;
false
Example 6:
> a = "Biba";
> b = NaN;
> a == a;
true
> b == b;
false