public void Sign()
{
var sources = new[] { Fix64.MinValue, (Fix64)(-1), Fix64.Zero, Fix64.One, Fix64.MaxValue };
var expecteds = new[] { -1, -1, 0, 1, 1 };
for (int i = 0; i < sources.Length; ++i)
{
var actual = MathFix.Sign(sources[i]);
var expected = expecteds[i];
Assert.Equal(expected, actual);
}
}
public void Sqrt()
{
for (int i = 0; i < m_testCases.Length; ++i)
{
var f = Fix64.FromRaw(m_testCases[i]);
if (MathFix.Sign(f) < 0)
{
Assert.Throws <ArgumentOutOfRangeException>(() => MathFix.Sqrt(f));
}
else
{
var expected = Math.Sqrt((double)f);
var actual = (double)MathFix.Sqrt(f);
var delta = (decimal)Math.Abs(expected - actual);
Assert.True(delta <= Fix64.Precision);
}
}
}