System.Tests.MathFTests.Atan C# (CSharp) Method

        public static void Atan()
        {
            AssertEqual(MathF.PI / 4.0f, MathF.Atan(1.0f), CrossPlatformMachineEpsilon);
            Assert.Equal(0.0f, MathF.Atan(0.0f));
            AssertEqual(-MathF.PI / 4.0f, MathF.Atan(-1.0f), CrossPlatformMachineEpsilon);
            Assert.Equal(float.NaN, MathF.Atan(float.NaN));
            AssertEqual(MathF.PI / 2.0f, MathF.Atan(float.PositiveInfinity), CrossPlatformMachineEpsilon * 10);
            AssertEqual(-MathF.PI / 2.0f, MathF.Atan(float.NegativeInfinity), CrossPlatformMachineEpsilon * 10);
        }