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

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