%description:
Test the integer exponentiation operator in NED expressions (they are implemented
with cDynamicExpression). 64-bit signed arithmetic.

%global:

void test(const char *expr)
{
    cDynamicExpression e;
    e.parse(expr);
    std::string result;
    try {
        cNedValue v = e.evaluate();
        result = v.str();
    } catch (std::exception& e) {
        result = e.what();
    }
    EV << expr << " ==> " << result << "\n";
}

void test(const char *s1, const std::string& s2, const char *s3)
{
    test((std::string(s1) + " " + s2 + " " + s3).c_str());
}

%activity:
test("2^0");
test("2^1");
test("2^2");
test("2^3");
test("2^4");
test("2^5");
test("2^6");
test("2^7");
test("2^8");
test("2^9");
test("2^10");
test("2^15");
test("2^16");
test("2^31");
test("2^32");
test("2^60");
test("2^61");
test("2^62");
test("2^63");

// negative exponent
test("2^-1");
test("2^-2");

// negative base
test("-2^0");
test("-2^1");
test("-2^2");
test("-2^3");
test("-2^63");
test("-2^64");

EV << ".\n";

%contains: stdout
2^0 ==> 1
2^1 ==> 2
2^2 ==> 4
2^3 ==> 8
2^4 ==> 16
2^5 ==> 32
2^6 ==> 64
2^7 ==> 128
2^8 ==> 256
2^9 ==> 512
2^10 ==> 1024
2^15 ==> 32768
2^16 ==> 65536
2^31 ==> 2147483648
2^32 ==> 4294967296
2^60 ==> 1152921504606846976
2^61 ==> 2305843009213693952
2^62 ==> 4611686018427387904
2^63 ==> operator "^": Overflow during integer exponentiation, try casting operands to double
2^-1 ==> operator "^": Negative exponent in integer exponentiation, cast operands to double to allow it
2^-2 ==> operator "^": Negative exponent in integer exponentiation, cast operands to double to allow it
-2^0 ==> 1
-2^1 ==> -2
-2^2 ==> 4
-2^3 ==> -8
-2^63 ==> -9223372036854775808
-2^64 ==> operator "^": Overflow during integer exponentiation, try casting operands to double
.