public void AtanTest()
{
foreach (MultiPrecision <Pow2.N8> x in TestTool.AllRangeSet <Pow2.N8>())
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan(x);
Console.WriteLine(x);
Console.WriteLine(y);
TestTool.Tolerance(Math.Atan((double)x), y);
}
Assert.IsTrue(MultiPrecision <Pow2.N8> .NearlyEqualBits(
MultiPrecision <Pow2.N8> .PI / 4,
MultiPrecision <Pow2.N8> .Atan(1), 1));
Assert.IsTrue(MultiPrecision <Pow2.N16> .NearlyEqualBits(
MultiPrecision <Pow2.N16> .PI / 4,
MultiPrecision <Pow2.N16> .Atan(1), 1));
}
public void AtanUnnormalValueTest()
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan(MultiPrecision <Pow2.N8> .NaN);
Assert.IsTrue(y.IsNaN);
}
public void AtanBorderTest()
{
MultiPrecision <Pow2.N8>[] borders_n8 = new MultiPrecision <Pow2.N8>[] {
MultiPrecision <Pow2.N8> .NegativeInfinity, -2, -1,
-MultiPrecision <Pow2.N8> .Ldexp(1, int.MinValue / 2),
0,
+MultiPrecision <Pow2.N8> .Ldexp(1, int.MinValue / 2),
1, 2, MultiPrecision <Pow2.N8> .PositiveInfinity
};
foreach (MultiPrecision <Pow2.N8> b in borders_n8)
{
List <MultiPrecision <Pow2.N8> > ys = new();
foreach (MultiPrecision <Pow2.N8> x in TestTool.EnumerateNeighbor(b))
{
MultiPrecision <Pow2.N8> y = MultiPrecision <Pow2.N8> .Atan(x);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan((double)x), y);
ys.Add(y);
}
if (b != 0)
{
TestTool.NearlyNeighbors(ys, 2);
}
TestTool.SmoothnessSatisfied(ys, 1);
TestTool.MonotonicitySatisfied(ys);
Console.Write("\n");
}
MultiPrecision <Pow2.N16>[] borders_n16 = new MultiPrecision <Pow2.N16>[] {
MultiPrecision <Pow2.N16> .NegativeInfinity, -2, -1,
-MultiPrecision <Pow2.N16> .Ldexp(1, int.MinValue / 2),
0,
+MultiPrecision <Pow2.N16> .Ldexp(1, int.MinValue / 2),
1, 2, MultiPrecision <Pow2.N16> .PositiveInfinity
};
foreach (MultiPrecision <Pow2.N16> b in borders_n16)
{
List <MultiPrecision <Pow2.N16> > ys = new();
foreach (MultiPrecision <Pow2.N16> x in TestTool.EnumerateNeighbor(b))
{
MultiPrecision <Pow2.N16> y = MultiPrecision <Pow2.N16> .Atan(x);
Console.WriteLine(x);
Console.WriteLine(x.ToHexcode());
Console.WriteLine(y);
Console.WriteLine(y.ToHexcode());
Console.Write("\n");
TestTool.Tolerance(Math.Atan((double)x), y);
ys.Add(y);
}
if (b != 0)
{
TestTool.NearlyNeighbors(ys, 2);
}
TestTool.SmoothnessSatisfied(ys, 1);
TestTool.MonotonicitySatisfied(ys);
Console.Write("\n");
}
}