public void TestMultiply()
{
var a = Fixed.Parse("10.3");
var b = Fixed.Parse("3.2");
var mul = a * b;
AssertApproximately(Fixed.Parse("32.96"), mul);
}
public void TestSubtract()
{
var a = Fixed.Parse("10.3");
var b = Fixed.Parse("3.2");
var sub = a - b;
var r = Fixed.Parse("7.1");
AssertApproximately(r, sub);
}
public void TestDivide()
{
var a = Fixed.Parse("10.3");
var b = Fixed.Parse("3.2");
var div = a / b;
var r = Fixed.Parse("3.21875");
AssertApproximately(r, div);
}
public void TestSqrt()
{
var a = Fixed.FromInt(9);
var r = Fixed.FromInt(3);
AssertApproximately(r, FMath.Sqrt(a));
a = Fixed.Parse("1546.564654");
r = Fixed.Parse("39.326386");
AssertApproximately(r, FMath.Sqrt(a));
}
public void TestAdd()
{
var a = Fixed.Parse("10.3");
var b = Fixed.Parse("3.2");
var sum = a + b;
AssertApproximately(Fixed.Parse("13.5"), sum);
sum = a + 3;
AssertApproximately(Fixed.Parse("13.3"), sum);
sum = -5 + b;
AssertApproximately(Fixed.Parse("-1.8"), sum);
}
public void TestTan()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(45) * deg2Rad;
var r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Tan(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Tan(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.75355405");
AssertApproximately(r, FMath.Tan(a));
}
public void TestCos()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(90) * deg2Rad;
var r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Cos(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Cos(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.79863551");
AssertApproximately(r, FMath.Cos(a));
}
public void TestSin()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(90) * deg2Rad;
var r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Sin(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Sin(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.60181502");
AssertApproximately(r, FMath.Sin(a));
}
public void TestFactory()
{
var a = Fixed.FromInt(10);
Assert.AreEqual(Fixed.FromInt(10), a);
var b = Fixed.FromFloat(3.2f);
Assert.AreEqual(Fixed.FromFloat(3.2f), b);
var c = Fixed.Parse("6.3");
AssertApproximately(Fixed.FromFraction(63, 10), c);
var d = Fixed.FromFraction(3141592, 1000000);
AssertApproximately(Fixed.FromFloat(3.141592f), d);
}
public void TestParseFloat()
{
var f = Fixed.Parse("000.0000");
AssertApproximately(Fixed.Zero, f);
f = Fixed.Parse("1.4567");
AssertApproximately(Fixed.FromFloat(1.4567f), f);
f = Fixed.Parse("-1.4831");
AssertApproximately(Fixed.FromFloat(-1.4831f), f);
f = Fixed.Parse("16777216.1345654");
AssertApproximately(Fixed.FromFloat(16777216), f);
f = Fixed.Parse("-16777216.1345654");
AssertApproximately(Fixed.FromFloat(-16777216), f);
}
public void TestParseInt()
{
var n = Fixed.Parse("0");
Assert.AreEqual(Fixed.Zero, n);
n = Fixed.Parse("1");
Assert.AreEqual(Fixed.One, n);
n = Fixed.Parse("-1");
Assert.AreEqual(Fixed.FromInt(-1), n);
n = Fixed.Parse("16777216");
Assert.AreEqual(Fixed.FromInt(16777216), n);
n = Fixed.Parse("-16777216");
Assert.AreEqual(Fixed.FromInt(-16777216), n);
}