From 816c754657acfea4d6f8a381da0a714819d82716 Mon Sep 17 00:00:00 2001
From: Dmitry Pentin <riotbr3aker@gmail.com>
Date: Sat, 11 Dec 2021 09:38:00 +0300
Subject: [PATCH] Removed obsolete Vector4Pair

---
 src/ImageSharp/Common/Tuples/Vector4Pair.cs | 82 ---------------------
 1 file changed, 82 deletions(-)
 delete mode 100644 src/ImageSharp/Common/Tuples/Vector4Pair.cs

diff --git a/src/ImageSharp/Common/Tuples/Vector4Pair.cs b/src/ImageSharp/Common/Tuples/Vector4Pair.cs
deleted file mode 100644
index 6294a61775..0000000000
--- a/src/ImageSharp/Common/Tuples/Vector4Pair.cs
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
-
-using System.Numerics;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-namespace SixLabors.ImageSharp.Tuples
-{
-    /// <summary>
-    /// Its faster to process multiple Vector4-s together, so let's pair them!
-    /// On AVX2 this pair should be convertible to <see cref="Vector{T}"/> of <see cref="float"/>!
-    /// TODO: Investigate defining this as union with an Octet.OfSingle type.
-    /// </summary>
-    [StructLayout(LayoutKind.Sequential)]
-    internal struct Vector4Pair
-    {
-        public Vector4 A;
-
-        public Vector4 B;
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void MultiplyInplace(float value)
-        {
-            this.A *= value;
-            this.B *= value;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddInplace(Vector4 value)
-        {
-            this.A += value;
-            this.B += value;
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public void AddInplace(ref Vector4Pair other)
-        {
-            this.A += other.A;
-            this.B += other.B;
-        }
-
-        /// <summary>.
-        /// Downscale method, specific to Jpeg color conversion. Works only if Vector{float}.Count == 4!        /// TODO: Move it somewhere else.
-        /// </summary>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal void RoundAndDownscalePreVector8(float downscaleFactor)
-        {
-            ref Vector<float> a = ref Unsafe.As<Vector4, Vector<float>>(ref this.A);
-            a = a.FastRound();
-
-            ref Vector<float> b = ref Unsafe.As<Vector4, Vector<float>>(ref this.B);
-            b = b.FastRound();
-
-            // Downscale by 1/factor
-            var scale = new Vector4(1 / downscaleFactor);
-            this.A *= scale;
-            this.B *= scale;
-        }
-
-        /// <summary>
-        /// AVX2-only Downscale method, specific to Jpeg color conversion.
-        /// TODO: Move it somewhere else.
-        /// </summary>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        internal void RoundAndDownscaleVector8(float downscaleFactor)
-        {
-            ref Vector<float> self = ref Unsafe.As<Vector4Pair, Vector<float>>(ref this);
-            Vector<float> v = self;
-            v = v.FastRound();
-
-            // Downscale by 1/factor
-            v *= new Vector<float>(1 / downscaleFactor);
-            self = v;
-        }
-
-        public override string ToString()
-        {
-            return $"{nameof(Vector4Pair)}({this.A}, {this.B})";
-        }
-    }
-}