Function testFunction

src/ImathTest/testFunction.cpp:35–75

} // namespace

void
testFunction ()
{
    cout << "halfFunction<T>\n";

    halfFunction<float> d2 (divideByTwo);

    assert (d2 (0) == 0);
    assert (d2 (2) == 1);
    assert (d2 (-2) == -1);
    assert (d2 (HALF_MAX) == HALF_MAX / 2);
    assert (d2 (-HALF_MAX) == -HALF_MAX / 2);
    assert (d2 (half::posInf ()) == 0);
    assert (d2 (half::negInf ()) == 0);
    assert (d2 (half::qNan ()) == 0);

    halfFunction<half> t5 (
        timesN (5), // function
        0,
        HALF_MAX / 8,    // domain
        -1,              // default value
        half::posInf (), // posInfValue
        half::negInf (), // negInfValue
        half::qNan ());  // nanValue

    assert (t5 (0) == 0);
    assert (t5 (2) == 10);
    assert (t5 (-2) == -1);
    assert (t5 (HALF_MAX) == -1);
    assert (t5 (-HALF_MAX) == -1);

    assert (t5 (half::posInf ()).isInfinity ());
    assert (!t5 (half::posInf ()).isNegative ());

    assert (t5 (half::negInf ()).isInfinity ());
    assert (t5 (half::negInf ()).isNegative ());

    assert (t5 (half::qNan ()).isNan ());

    cout << "ok\n\n" << flush;
}