public static T Bat <T>(Narray <T> a, int i, int j, T value)
{
unchecked
{
if ((uint)(i) >= (uint)(a.Dim(0)))
{
return(value);
}
if ((uint)(j) >= (uint)(a.Dim(1)))
{
return(value);
}
}
return(a.UnsafeAt(i, j));
}
/// <summary>
/// Array subscripting with extending boundary conditions.
/// </summary>
public static T Ext <T>(Narray <T> a, int i, int j)
{
i = Math.Max(0, Math.Min(i, a.Dim(0) - 1));
j = Math.Max(0, Math.Min(j, a.Dim(1) - 1));
return(a.UnsafeAt(i, j));
}