public static int GetNumberOfLeadingZeros(uint n)
{
n = n | n >> 1;
n = n | n >> 2;
n = n | n >> 4;
n = n | n >> 8;
n = n | n >> 16;
return(PopulationCount.GetPopulationCount(~n));
}
public static int GetPopulationCount(ulong n)
{
n = n | n >> 1;
n = n | n >> 2;
n = n | n >> 4;
n = n | n >> 8;
n = n | n >> 16;
n = n | n >> 32;
return(PopulationCount.GetPopulationCount(~n));
}
public AgeFileMap()
{
Map(m => m.Code).Convert(row =>
{
return(row.Row.GetField <string>(0));
});
Map(m => m.Name).Convert(row =>
{
return(row.Row.GetField <string>(1));
});
Map(m => m.Type).Convert(row =>
{
AreaType type = EnumParser <AreaType> .GetValueFromName(row.Row.GetField <string>(2));
return(type);
});
Map(m => m.Population).Convert(row => {
var list = new List <PopulationCount>();
for (int i = 0; i <= 90; i++)
{
var count = new PopulationCount();
count.MinAge = i;
var pop = row.Row.GetField <string>(i + 4);
count.Population = int.Parse(pop, NumberStyles.AllowThousands);
if (i != 90)
{
count.MaxAge = i;
}
else
{
count.MaxAge = int.MaxValue;
}
list.Add(count);
}
return(list);
});
}
/// <summary>
/// 立ってるビットの数を数える
/// </summary>
/// <param name="n">立ってるビットの数を数える</param>
/// <returns></returns>
public static long GetPopulationCount(long n)
{
return(PopulationCount.GetPopulationCount((ulong)n));
}
/// <summary>
/// 立ってるビットの数を数える
/// </summary>
/// <param name="n">立ってるビットの数を数える</param>
/// <returns></returns>
public static long GetPopulationCount(int n)
{
return(PopulationCount.GetPopulationCount((uint)n));
}