public void ZeroTest()
{
var number = 0.0f;
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("0.00000000 * 2^(-126)", floatToString);
}
public void FloatToStringTest()
{
var number = 12.375f;
var bits = Float754.FloatToString(number);
Assert.AreEqual("1.54687500 * 2^(3)", bits);
}
public void MinusOneTest()
{
var number = -1.0f;
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("-1.00000000 * 2^(0)", floatToString);
}
public void SmallTwoTest()
{
var number = 1.6000001f;
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("1.60000014 * 2^(0)", floatToString);
}
public void SmallestDenormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x00000001);
Assert.AreEqual(1.40129846E-45f, number);
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(8.01496461E-20f, gama);
}
public void NotANumberTest()
{
var number = float.NaN;
Assert.IsTrue(float.IsNaN(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(6.65971189E-20f, gama);
}
public void LargestDenormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x007FFFFF);
Assert.AreEqual(1.17549421E-38f, number);
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.07254694E-19f, gama);
}
public void LargestNormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x7F7FFFFF);
Assert.AreEqual(3.40282347E+38f, number);
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.82484406E+19f, gama);
}
public void Sqrt1Test()
{
var number = 1.0f;
Assert.AreEqual("1.00000000 * 2^(0)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.0f, gama, 0.0108f);
}
public void SqrtHalfTest()
{
var number = 0.5f;
Assert.AreEqual("1.00000000 * 2^(-1)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(0.7071067811f, gama, 0.0322f);
}
public void Sqrt2Test()
{
var number = 2.0f;
Assert.AreEqual("1.00000000 * 2^(1)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.41421356237f, gama, 0.0643f);
}
public void SqrtOneSixteenthTest()
{
var number = 0.0625f;
Assert.AreEqual("1.00000000 * 2^(-4)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(0.25f, gama, 0.00269f);
}
public void SqrtQuarterTest()
{
var number = 0.25f;
Assert.AreEqual("1.00000000 * 2^(-2)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(0.5f, gama, 0.00538f);
}
public void Sqrt256Test()
{
var number = 256.0f;
Assert.AreEqual("1.00000000 * 2^(8)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(16.0f, gama, 0.173f);
}
public void MiddleDenormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x00400000);
Assert.AreEqual(5.87747175E-39f, number);
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(1.09343078E+19f, gama);
}
public void NotANumberTest()
{
var number = float.NaN;
Assert.IsTrue(float.IsNaN(number));
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("-1.50000000 * 2^(128)", floatToString);
}
public void MiddleDenormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x00400000);
Assert.AreEqual(5.87747175E-39f, number);
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(9.37021732E-20f, gama);
}
public void PositiveInfinityTest()
{
var number = float.PositiveInfinity;
Assert.IsTrue(float.IsInfinity(number));
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(5.24618333E-20f, gama);
}
public void NotANumberTest()
{
var number = float.NaN;
Assert.IsTrue(float.IsNaN(number));
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(1.55459938E+19f, gama);
}
public void LargestNormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x7F7FFFFF);
Assert.AreEqual(3.40282347E+38f, number);
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(5.24618366E-20f, gama);
}
public void Sqrt2Test()
{
var number = 2.0f;
Assert.AreEqual("1.00000000 * 2^(1)", Float754.FloatToString(number));
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(0.7071067811f, gama, 0.011f);
}
public void SqrtHalfTest()
{
var number = 0.5f;
Assert.AreEqual("1.00000000 * 2^(-1)", Float754.FloatToString(number));
var gama = Float754.FastInvSqrtFloat(number);
Assert.AreEqual(1.414213562f, gama, 0.022f);
}
public void Sqrt4Test()
{
var number = 4.0f;
Assert.AreEqual("1.00000000 * 2^(2)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(2.0f, gama, 0.0216f);
}
public void PositiveInfinityTest()
{
var number = float.PositiveInfinity;
Assert.IsTrue(float.IsInfinity(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.82484417E+19f, gama);
}
public void Sqrt16Test()
{
var number = 16.0f;
Assert.AreEqual("1.00000000 * 2^(4)", Float754.FloatToString(number));
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(4.0f, gama, 0.0431f);
}
public void SmallestNormalizedNumberSqrt()
{
var number = BitConverter.Int32BitsToSingle(0x00800000);
Assert.AreEqual(1.17549435E-38f, number);
var gama = Float754.FastSqrtFloat(number);
Assert.AreEqual(1.072547E-19f, gama);
}
public void MiddleDenormalizedNumber()
{
var number = BitConverter.Int32BitsToSingle(0x00400000);
Assert.IsFalse(float.IsNormal(number));
Assert.AreEqual(5.87747175E-39f, number);
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("0.50000000 * 2^(-126)", floatToString);
}
public void LargestDenormalizedNumber()
{
var number = BitConverter.Int32BitsToSingle(0x007FFFFF);
Assert.IsFalse(float.IsNormal(number));
Assert.AreEqual(1.17549421E-38f, number);
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("0.99999988 * 2^(-126)", floatToString);
}
public void SmallestNormalizedNumber()
{
var number = BitConverter.Int32BitsToSingle(0x00800000);
Assert.IsTrue(float.IsNormal(number));
Assert.AreEqual(1.17549435E-38f, number);
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("1.00000000 * 2^(-126)", floatToString);
}
public void NegativeZeroTest()
{
// 0x8000_0000
var number = BitConverter.Int32BitsToSingle(-2_147_483_648);
Assert.AreEqual(0.0f, number);
var floatToString = Float754.FloatToString(number);
Assert.AreEqual("-0.00000000 * 2^(-126)", floatToString);
}