/// <summary>
/// Produces a blocked vector
/// </summary>
/// <param name="random">The random source</param>
/// <param name="domain">The domain of the random variable</param>
/// <typeparam name="T">The vector component type</typeparam>
public static BlockVector <T> BlockVec <T>(this IPolyrand random, int len, Interval <T>?domain = null)
where T : struct
{
var dst = BlockVector.Alloc <T>(len);
if (domain != null)
{
random.StreamTo(domain.Value, len, ref dst[0]);
}
else
{
random.StreamTo(len, ref dst[0]);
}
return(dst);
}
/// <summary>
/// Produces a blocked vector
/// </summary>
/// <param name="random">The random source</param>
/// <param name="domain">The domain of the random variable</param>
/// <typeparam name="T">The vector component type</typeparam>
public static Vector <T> Vector <T>(this IPolyrand random, int len, Interval <T>?domain = null)
where T : unmanaged
{
var dst = Z0.Vector.Alloc <T>(len);
if (domain != null)
{
random.StreamTo(domain.Value, len, ref dst[0]);
}
else
{
random.StreamTo(len, ref dst[0]);
}
return(dst);
}
static void MarkovVec(this IPolyrand random, Span <double> dst)
{
var length = dst.Length;
random.StreamTo(closed(1.0, length << 4), length, ref dst[0]);
mathspan.fdiv(dst, dst.Avg() * length);
}
public static Span <T> Span <T>(this IPolyrand random, int length, Interval <T>?domain = null, Func <T, bool> filter = null)
where T : struct
{
Span <T> dst = new T[length];
random.StreamTo(domain.Configure(), length, ref head(dst), filter);
return(dst);
}
static BlockVector <double> MarkovVec(this IPolyrand random, int length, double min, double max)
{
var dst = Z0.Span256.AllocBlocks <double>(Z0.Span256.MinBlocks <double>(length));
random.StreamTo(closed(min, max), length, ref dst[0]);
mathspan.fdiv(dst.Unblocked, dst.Avg() * length);
return(dst);
}
public static void Fill <N, T>(this IPolyrand random, ref BlockVector <N, T> vector, N n = default)
where T : struct
where N : ITypeNat, new()
=> random.StreamTo <T>(nati <N>(), ref vector.Unsized[0]);
public static void Fill <N, T>(this IPolyrand random, ref Vector <N, T> vector, N n = default)
where T : unmanaged
where N : ITypeNat, new()
=> random.StreamTo <T>(nati <N>(), ref vector.Data[0]);
