public static string Dec2Frac(double dbl)
{
char neg = ' ';
double dblDecimal = dbl;
if (dblDecimal == (int)dblDecimal) return dblDecimal.ToString(); //return no if it's not a decimal
if (dblDecimal < 0)
{
dblDecimal = Math.Abs(dblDecimal);
neg = '-';
}
var whole = (int)Math.Truncate(dblDecimal);
string decpart = dblDecimal.ToString().Replace(Math.Truncate(dblDecimal) + ".", "");
double rN = Convert.ToDouble(decpart);
double rD = Math.Pow(10, decpart.Length);
string rd = Recur(decpart);
int rel = Convert.ToInt32(rd);
if (rel != 0)
{
rN = rel;
rD = (int)Math.Pow(10, rd.Length) - 1;
}
//just a few prime factors for testing purposes
var primes = new[] { 47, 43, 37, 31, 29, 23, 19, 17, 13, 11, 7, 5, 3, 2 };
foreach (int i in primes) ReduceNo(i, ref rD, ref rN);
rN = rN + (whole * rD);
return string.Format("{0}{1}/{2}", neg, rN, rD);
}
private bool EnableGroupByPresentationUniqueKey(InternalItemsQuery query)
{
if (!query.GroupByPresentationUniqueKey)
{
return false;
}
if (!string.IsNullOrWhiteSpace(query.PresentationUniqueKey))
{
return false;
}
if (query.User == null)
{
return false;
}
if (query.IncludeItemTypes.Length == 0)
{
return true;
}
var types = new[] {
typeof(Episode).Name,
typeof(Video).Name ,
typeof(Movie).Name ,
typeof(MusicVideo).Name ,
typeof(Series).Name ,
typeof(Season).Name };
if (types.Any(i => query.IncludeItemTypes.Contains(i, StringComparer.OrdinalIgnoreCase)))
{
return true;
}
return false;
}
