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TensorPrimitives.Ceiling.cs
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TensorPrimitives.Ceiling.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Diagnostics;
using System.Runtime.Intrinsics;
namespace System.Numerics.Tensors
{
public static partial class TensorPrimitives
{
/// <summary>Computes the element-wise ceiling of numbers in the specified tensor.</summary>
/// <param name="x">The first tensor, represented as a span.</param>
/// <param name="destination">The destination tensor, represented as a span.</param>
/// <exception cref="ArgumentException">Destination is too short.</exception>
/// <exception cref="ArgumentException"><paramref name="x"/> and <paramref name="destination"/> reference overlapping memory locations and do not begin at the same location.</exception>
/// <remarks>
/// <para>
/// This method effectively computes <c><paramref name="destination" />[i] = T.Ceiling(<paramref name="x" />[i])</c>.
/// </para>
/// </remarks>
public static void Ceiling<T>(ReadOnlySpan<T> x, Span<T> destination)
where T : IFloatingPoint<T> =>
InvokeSpanIntoSpan<T, CeilingOperator<T>>(x, destination);
private readonly struct CeilingOperator<T> : IUnaryOperator<T, T> where T : IFloatingPoint<T>
{
public static bool Vectorizable => typeof(T) == typeof(float) || typeof(T) == typeof(double);
public static T Invoke(T x) => T.Ceiling(x);
public static Vector128<T> Invoke(Vector128<T> x)
{
if (typeof(T) == typeof(float))
{
return Vector128.Ceiling(x.AsSingle()).As<float, T>();
}
else
{
Debug.Assert(typeof(T) == typeof(double));
return Vector128.Ceiling(x.AsDouble()).As<double, T>();
}
}
public static Vector256<T> Invoke(Vector256<T> x)
{
if (typeof(T) == typeof(float))
{
return Vector256.Ceiling(x.AsSingle()).As<float, T>();
}
else
{
Debug.Assert(typeof(T) == typeof(double));
return Vector256.Ceiling(x.AsDouble()).As<double, T>();
}
}
public static Vector512<T> Invoke(Vector512<T> x)
{
if (typeof(T) == typeof(float))
{
return Vector512.Ceiling(x.AsSingle()).As<float, T>();
}
else
{
Debug.Assert(typeof(T) == typeof(double));
return Vector512.Ceiling(x.AsDouble()).As<double, T>();
}
}
}
}
}