public void Atan2UnnormalValueTest()
{
MultiPrecision <Pow2.N8>[] vs = new MultiPrecision <Pow2.N8>[] {
MultiPrecision <Pow2.N8> .NaN,
MultiPrecision <Pow2.N8> .PositiveInfinity,
MultiPrecision <Pow2.N8> .NegativeInfinity,
};
foreach (MultiPrecision <Pow2.N8> v in vs)
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(0, v);
Assert.IsTrue(y.IsNaN);
}
foreach (MultiPrecision <Pow2.N8> v in vs)
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(v, 0);
Assert.IsTrue(y.IsNaN);
}
foreach (MultiPrecision <Pow2.N8> v in vs)
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(v, v);
Assert.IsTrue(y.IsNaN);
}
}
public void Atan2BorderTest()
{
foreach (MultiPrecision <Pow2.N8> x in TestTool.EnumerateNeighbor <Pow2.N8>(0))
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(x, 1);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan2((double)x, 1), y);
}
Console.Write("\n");
foreach (MultiPrecision <Pow2.N8> x in TestTool.EnumerateNeighbor <Pow2.N8>(0))
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(x, -1);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan2((double)x, -1), y);
}
Console.Write("\n");
foreach (MultiPrecision <Pow2.N8> x in TestTool.EnumerateNeighbor <Pow2.N8>(0))
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(1, x);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan2(1, (double)x), y);
}
Console.Write("\n");
foreach (MultiPrecision <Pow2.N8> x in TestTool.EnumerateNeighbor <Pow2.N8>(0))
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan2(-1, x);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan2(-1, (double)x), y);
}
}
public void Atan2Test()
{
for (Int64 iy = -10; iy <= 10; iy++)
{
for (Int64 ix = -10; ix <= 10; ix++)
{
MultiPrecision <Pow2.N8> x = (MultiPrecision <Pow2.N8>)ix / 10;
MultiPrecision <Pow2.N8> y = (MultiPrecision <Pow2.N8>)iy / 10;
MultiPrecision <Pow2.N8> d = MultiPrecision <Pow2.N8> .Atan2(y, x);
Console.WriteLine($"{x}, {y}");
Console.WriteLine(d);
TestTool.Tolerance(Math.Atan2((double)y, (double)x), d);
}
}
}