public void Log2SignedOfNegativeShouldReturnNeg1()
{
Assert.AreEqual(-1, Base2Math.Log2((sbyte)-10), "sbyte");
Assert.AreEqual(-1, Base2Math.Log2((short)-10), "short");
Assert.AreEqual(-1, Base2Math.Log2((int)-10), "int");
Assert.AreEqual(-1, Base2Math.Log2((long)-10), "long");
}
public void Log2UnsignedOf0ShouldReturnMaxValue()
{
Assert.AreEqual(byte.MaxValue, Base2Math.Log2((byte)0), "byte");
Assert.AreEqual(ushort.MaxValue, Base2Math.Log2((ushort)0), "ushort");
Assert.AreEqual(uint.MaxValue, Base2Math.Log2((uint)0), "uint");
Assert.AreEqual(ulong.MaxValue, Base2Math.Log2((ulong)0), "ulong");
Assert.AreEqual(UInt128.MaxValue, Base2Math.Log2((UInt128)0), "UInt128");
}
public void Log2Of10ShouldReturn3()
{
Assert.AreEqual(3, Base2Math.Log2((byte)10), "byte");
Assert.AreEqual(3, Base2Math.Log2((sbyte)10), "sbyte");
Assert.AreEqual(3, Base2Math.Log2((ushort)10), "ushort");
Assert.AreEqual(3, Base2Math.Log2((short)10), "short");
Assert.AreEqual(3, Base2Math.Log2((uint)10), "uint");
Assert.AreEqual(3, Base2Math.Log2((int)10), "int");
Assert.AreEqual(3, Base2Math.Log2((ulong)10), "ulong");
Assert.AreEqual(3, Base2Math.Log2((long)10), "long");
Assert.AreEqual((UInt128)3, Base2Math.Log2((UInt128)10), "UInt128");
}
public void Log2Of2ShouldReturn1()
{
Assert.AreEqual(1, Base2Math.Log2((byte)2), "byte");
Assert.AreEqual(1, Base2Math.Log2((sbyte)2), "sbyte");
Assert.AreEqual(1, Base2Math.Log2((ushort)2), "ushort");
Assert.AreEqual(1, Base2Math.Log2((short)2), "short");
Assert.AreEqual(1, Base2Math.Log2((uint)2), "uint");
Assert.AreEqual(1, Base2Math.Log2((int)2), "int");
Assert.AreEqual(1, Base2Math.Log2((ulong)2), "ulong");
Assert.AreEqual(1, Base2Math.Log2((long)2), "long");
Assert.AreEqual((UInt128)1, Base2Math.Log2((UInt128)2), "UInt128");
}
public void Log2Of1ShouldReturn0()
{
Assert.AreEqual(0, Base2Math.Log2((byte)1), "byte");
Assert.AreEqual(0, Base2Math.Log2((sbyte)1), "sbyte");
Assert.AreEqual(0, Base2Math.Log2((ushort)1), "ushort");
Assert.AreEqual(0, Base2Math.Log2((short)1), "short");
Assert.AreEqual(0, Base2Math.Log2((uint)1), "uint");
Assert.AreEqual(0, Base2Math.Log2((int)1), "int");
Assert.AreEqual(0, Base2Math.Log2((ulong)1), "ulong");
Assert.AreEqual(0, Base2Math.Log2((long)1), "long");
Assert.AreEqual(UInt128.Zero, Base2Math.Log2((UInt128)1), "UInt128");
}
public void Log2SignedByteShouldMatchWider()
{
sbyte v = sbyte.MinValue;
while (true)
{
sbyte expected = Base2Math.Log2(v);
Assert.AreEqual((short)expected, Base2Math.Log2((short)v), "short");
Assert.AreEqual((int)expected, Base2Math.Log2((int)v), "int");
Assert.AreEqual((long)expected, Base2Math.Log2((long)v), "long");
if (v == sbyte.MaxValue)
{
break;
}
v++;
}
}
public void Log2UnsignedByteShouldMatchWider()
{
byte v = 1;
while (true)
{
byte expected = Base2Math.Log2(v);
Assert.AreEqual((ushort)expected, Base2Math.Log2((ushort)v), "ushort=>" + v);
Assert.AreEqual((short)expected, Base2Math.Log2((short)v), "short=>" + v);
Assert.AreEqual((uint)expected, Base2Math.Log2((uint)v), "uint=>" + v);
Assert.AreEqual((int)expected, Base2Math.Log2((int)v), "int=>" + v);
Assert.AreEqual((ulong)expected, Base2Math.Log2((ulong)v), "ulong=>" + v);
Assert.AreEqual((long)expected, Base2Math.Log2((long)v), "long=>" + v);
Assert.AreEqual((UInt128)expected, Base2Math.Log2((UInt128)v), "UInt128=>" + v);
if (v == byte.MaxValue)
{
break;
}
v++;
}
}