public static string ContinuedCoeffToString(WWComplex c, string variableString)
{
if (c.EqualValue(new WWComplex(1, 0)))
{
return(string.Format(" +{0}", variableString));
}
if (c.EqualValue(new WWComplex(-1, 0)))
{
return(string.Format(" -{0}", variableString));
}
if (c.imaginary == 0)
{
if (c.real < 0)
{
return(string.Format(" {0}{1}", c.real, variableString));
}
else
{
return(string.Format(" +{0}{1}", c.real, variableString));
}
}
if (c.EqualValue(new WWComplex(0, 1)))
{
return(string.Format(" +{0}{1}", WWComplex.imaginaryUnit, variableString));
}
if (c.EqualValue(new WWComplex(0, -1)))
{
return(string.Format(" -{0}{1}", WWComplex.imaginaryUnit, variableString));
}
if (c.real == 0)
{
if (c.imaginary < 0)
{
return(string.Format(" {0}{1}{2}", c.imaginary, WWComplex.imaginaryUnit, variableString));
}
else
{
return(string.Format(" +{0}{1}{2}", c.imaginary, WWComplex.imaginaryUnit, variableString));
}
}
return(string.Format(" +({0}){1}", c, variableString));
}
/// <summary>
/// 1乗以上の項の係数項の表示。
/// </summary>
public static string FirstCoeffToString(WWComplex c, string variableString)
{
if (c.EqualValue(new WWComplex(1, 0)))
{
return(variableString); // 係数を表示せず、変数のみ表示する。
}
if (c.EqualValue(new WWComplex(-1, 0)))
{
return(string.Format("-{0}", variableString));
}
if (c.imaginary == 0)
{
// 実数。
return(string.Format("{0}{1}", c.real, variableString));
}
if (c.EqualValue(new WWComplex(0, 1)))
{
return(string.Format("{0}{1}", WWComplex.imaginaryUnit, variableString));
}
if (c.EqualValue(new WWComplex(0, -1)))
{
return(string.Format("-{0}{1}", WWComplex.imaginaryUnit, variableString));
}
if (c.real == 0)
{
// 純虚数。
return(string.Format("{0}{1}{2}", c.imaginary, WWComplex.imaginaryUnit, variableString));
}
// 純虚数ではない虚数。
return(string.Format("({0}){1}", c, variableString));
}
