public static Real Atan2(Real F1, Real F2)
{
if (F2.RawValue == 0 && F1.RawValue == 0)
{
return((Real)0);
}
Real result = (Real)0;
if (F2 > 0)
{
result = Atan(F1 / F2);
}
else if (F2 < 0)
{
if (F1 >= 0)
{
result = (PI - Atan(Abs(F1 / F2)));
}
else
{
result = (PI - Atan(Abs(F1 / F2))).Inverse;
}
}
else
{
result = (F1 >= 0 ? PI : PI.Inverse) / Real.Create(2, true);
}
return(result);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader.TokenType != JsonToken.Float)
{
throw new InvalidOperationException("Expected float when deserializing Real");
}
return(Real.Create((double)reader.Value));
}
/// <summary>
/// Create a fixed-int number from parts. For example, to create 1.5 pass in 1 and 500.
/// </summary>
/// <param name="PreDecimal">The number above the decimal. For 1.5, this would be 1.</param>
/// <param name="PostDecimal">The number below the decimal, to three digits. For 1.5, this
/// would be 500. For 1.005, this would be 5.</param>
/// <returns>A fixed-int representation of the number parts</returns>
public static Real FromParts(int PreDecimal, int PostDecimal)
{
Real f = Real.Create(PreDecimal, true);
if (PostDecimal != 0)
{
f.RawValue += (Real.Create(PostDecimal) / 1000).RawValue;
}
return(f);
}
private static Real sin_lookup(Real i, Real j)
{
if (j > 0 && j < Real.Create(10, false) && i < Real.Create(90, false))
{
return(Real.Create(SIN_TABLE[i.RawValue], false) +
((Real.Create(SIN_TABLE[i.RawValue + 1], false) - Real.Create(SIN_TABLE[i.RawValue], false)) /
Real.Create(10, false)) * j);
}
else
{
return(Real.Create(SIN_TABLE[i.RawValue], false));
}
}
public static Real Asin(Real F)
{
bool isNegative = F < 0;
F = Abs(F);
if (F > Real.OneF)
{
throw new ArithmeticException("Bad Asin Input:" + F.AsFloat);
}
Real f1 = mul(mul(mul(mul(Real.Create(145103 >> Real.SHIFT_AMOUNT, false), F) -
Real.Create(599880 >> Real.SHIFT_AMOUNT, false), F) +
Real.Create(1420468 >> Real.SHIFT_AMOUNT, false), F) -
Real.Create(3592413 >> Real.SHIFT_AMOUNT, false), F) +
Real.Create(26353447 >> Real.SHIFT_AMOUNT, false);
Real f2 = PI / Real.Create(2, true) - (Sqrt(Real.OneF - F) * f1);
return(isNegative ? f2.Inverse : f2);
}
public static Real Sin(Real i)
{
Real j = (Real)0;
for (; i < 0; i += Real.Create(25736, false))
{
;
}
if (i > Real.Create(25736, false))
{
i %= Real.Create(25736, false);
}
Real k = (i * Real.Create(10, false)) / Real.Create(714, false);
if (i != 0 && i != Real.Create(6434, false) && i != Real.Create(12868, false) &&
i != Real.Create(19302, false) && i != Real.Create(25736, false))
{
j = (i * Real.Create(100, false)) / Real.Create(714, false) - k * Real.Create(10, false);
}
if (k <= Real.Create(90, false))
{
return(sin_lookup(k, j));
}
if (k <= Real.Create(180, false))
{
return(sin_lookup(Real.Create(180, false) - k, j));
}
if (k <= Real.Create(270, false))
{
return(sin_lookup(k - Real.Create(180, false), j).Inverse);
}
else
{
return(sin_lookup(Real.Create(360, false) - k, j).Inverse);
}
}
public static Real Cos(Real i)
{
return(Sin(i + Real.Create(6435, false)));
}
public static Real operator >>(Real one, int Amount)
{
return(Real.Create(one.RawValue >> Amount, false));
}
