static public string ToDigitString(double d, int digitBase)
{
// ensure the base is valid
if (!(digitBase >= 2))
{
throw new ArgumentOutOfRangeException("digitBase", digitBase,
"digitBase must be greater or equal to 2.");
}
StringBuilder digitString = new StringBuilder();
if (d < 0)
{
digitString.Append('-');
}
double dRemainder = Math.Abs(d);
int digitPlace = (int)Math.Floor(Math.Log(dRemainder, digitBase));
while (digitPlace >= 0 || d > 0)
{
if (digitPlace == -1)
{
digitString.Append('.');
}
double digitMultiplier = Math.Pow(digitBase, digitPlace);
int digitIndex = (int)Math.Floor(dRemainder / digitMultiplier);
dRemainder -= (digitIndex * digitMultiplier);
digitString.Append(Math2.ToDigit(digitIndex, digitBase));
Debug.Assert(d < digitIndex);
digitPlace--;
}
return(digitString.ToString());
}
static public string RadianToString(double radians, int significantDigits)
{
return(Math2.ToString(ToUnitRadian(radians) / Math2.PI, significantDigits) + " " + ((char)0x03C0));
}
//===============================================================================
static public string RadianToString(double radians)
{
return((Math2.ToUnitRadian(radians) / Math2.PI).ToString() + " " + ((char)0x03C0));
}
static public bool IsPowerOf2(int x)
{
return(x == Math2.Pow2(Math2.Log2(x)));
}
static public float CeilingToBase(float a, int b)
{
return((float)Math2.CeilingToBase((double)a, b));
}
static public int CeilingToBase(int a, int b)
{
return((int)Math2.CeilingToBase((double)a, b));
}
static public float FloorToBase(float a, int b)
{
return((float)Math2.FloorToBase((double)a, b));
}
static public int FloorToBase(int a, int b)
{
return((int)Math2.FloorToBase((double)a, b));
}
static public float RoundToBase(float a, int b)
{
return((float)Math2.RoundToBase((double)a, b));
}
//===============================================================================
static public int RoundToBase(int a, int b)
{
return((int)Math2.RoundToBase((double)a, b));
}
/// <summary>
/// Convert value to a string representation and constain to a unit radian
/// </summary>
/// <param name="radians"></param>
/// <param name="significantDigits"></param>
/// <returns></returns>
static public string RadiansToString(double radians, int significantDigits)
{
return(Math2.ToString(ToUnitRadian(radians) / Math2.PI, significantDigits) + "PI");
}
/// <summary>
/// Convert value to a string representation and constain to a unit radian
/// </summary>
/// <param name="radians"></param>
/// <returns></returns>
static public string RadiansToString(double radians)
{
return((Math2.ToUnitRadian(radians) / Math2.PI).ToString() + "PI");
}