public void Rgba64()
{
// Test the limits.
Assert.Equal((ulong)0x0, new Rgba64(Vector4.Zero).PackedValue);
Assert.Equal(0xFFFFFFFFFFFFFFFF, new Rgba64(Vector4.One).PackedValue);
// Test ToVector4
Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.Zero).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One).ToVector4()));
// Test clamping.
Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.One * -1234.0f).ToVector4()));
Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One * 1234.0f).ToVector4()));
// Test data ordering
Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(((float)0x1EB8) / 0xffff, ((float)0x570A) / 0xffff, ((float)0x8F5C) / 0xffff, ((float)0xC7AD) / 0xffff).PackedValue);
Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(0.12f, 0.34f, 0.56f, 0.78f).PackedValue);
float x = 0.08f;
float y = 0.15f;
float z = 0.30f;
float w = 0.45f;
Assert.Equal((ulong)0x73334CCC2666147B, new Rgba64(x, y, z, w).PackedValue);
byte[] rgb = new byte[3];
byte[] rgba = new byte[4];
byte[] bgr = new byte[3];
byte[] bgra = new byte[4];
new Rgba64(x, y, z, w).ToXyzBytes(rgb, 0);
Assert.Equal(rgb, new byte[] { 20, 38, 76 });
new Rgba64(x, y, z, w).ToXyzwBytes(rgba, 0);
Assert.Equal(rgba, new byte[] { 20, 38, 76, 115 });
new Rgba64(x, y, z, w).ToZyxBytes(bgr, 0);
Assert.Equal(bgr, new byte[] { 76, 38, 20 });
new Rgba64(x, y, z, w).ToZyxwBytes(bgra, 0);
Assert.Equal(bgra, new byte[] { 76, 38, 20, 115 });
Rgba64 r = new Rgba64();
r.PackFromBytes(20, 38, 76, 115);
r.ToXyzwBytes(rgba, 0);
Assert.Equal(rgba, new byte[] { 20, 38, 76, 115 });
}