refactor: revert 47f3a138aa

Generic math features will be built in a feature branch to avoid merge conflicts with develop.

X10D/src/Collections/BinaryIntegerExtensions.cs

@@ -1,89 +0,0 @@
-#if NET7_0_OR_GREATER
-using System.Diagnostics.Contracts;
-using System.Numerics;
-using System.Runtime.CompilerServices;
-using System.Runtime.Intrinsics.X86;
-using X10D.CompilerServices;
-
-namespace X10D.Collections;
-
-/// <summary>
-///     Collection-related extension methods for <see cref="IBinaryInteger{T}" />.
-/// </summary>
-public static class BinaryIntegerExtensions
-{
-    /// <summary>
-    ///     Unpacks this integer into a boolean list, treating it as a bit field.
-    /// </summary>
-    /// <param name="value">The value to unpack.</param>
-    /// <returns>An array of <see cref="bool" /> with a length equal to the size of <typeparamref name="TInteger" />.</returns>
-    [Pure]
-    [MethodImpl(CompilerResources.MethodImplOptions)]
-    public static bool[] Unpack<TInteger>(this TInteger value)
-        where TInteger : unmanaged, IBinaryInteger<TInteger>
-    {
-        unsafe
-        {
-            var buffer = new bool[sizeof(TInteger) * 8];
-            value.Unpack(buffer);
-            return buffer;
-        }
-    }
-
-    /// <summary>
-    ///     Unpacks this integer into a boolean list, treating it as a bit field.
-    /// </summary>
-    /// <param name="value">The value to unpack.</param>
-    /// <param name="destination">When this method returns, contains the unpacked booleans from <paramref name="value" />.</param>
-    /// <exception cref="ArgumentException"><paramref name="destination" /> is not large enough to contain the result.</exception>
-    [MethodImpl(CompilerResources.MethodImplOptions)]
-    public static void Unpack<TInteger>(this TInteger value, Span<bool> destination)
-        where TInteger : unmanaged, IBinaryInteger<TInteger>
-    {
-        unsafe
-        {
-            if (destination.Length < sizeof(TInteger) * 8)
-            {
-                throw new ArgumentException(ExceptionMessages.DestinationSpanLengthTooShort, nameof(destination));
-            }
-        }
-
-        switch (value)
-        {
-            case byte valueByte when Sse3.IsSupported:
-                valueByte.UnpackInternal_Ssse3(destination);
-                break;
-
-            case int valueInt32 when Avx2.IsSupported:
-                valueInt32.UnpackInternal_Ssse3(destination);
-                break;
-
-            case int valueInt32 when Sse3.IsSupported:
-                valueInt32.UnpackInternal_Ssse3(destination);
-                break;
-
-            case short valueInt16 when Sse3.IsSupported:
-                valueInt16.UnpackInternal_Ssse3(destination);
-                break;
-
-            default:
-                UnpackInternal_Fallback(value, destination);
-                break;
-        }
-    }
-
-    [MethodImpl(CompilerResources.MethodImplOptions)]
-    internal static void UnpackInternal_Fallback<TInteger>(this TInteger value, Span<bool> destination)
-        where TInteger : unmanaged, IBinaryInteger<TInteger>
-    {
-        unsafe
-        {
-            int bitCount = sizeof(TInteger) * 8;
-            for (var index = 0; index < bitCount; index++)
-            {
-                destination[index] = (value & (TInteger.One << index)) != TInteger.Zero;
-            }
-        }
-    }
-}
-#endif

X10D/src/Collections/ByteExtensions.cs

@@ -1,7 +1,5 @@
-#if !NET7_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
-using System.Diagnostics.CodeAnalysis;
 using System.Diagnostics.Contracts;
-#endif
 using System.Runtime.CompilerServices;
 using X10D.CompilerServices;
 
@@ -19,7 +17,6 @@ public static class ByteExtensions
 {
     private const int Size = sizeof(byte) * 8;
 
-#if !NET7_0_OR_GREATER
     /// <summary>
     ///     Unpacks this 8-bit unsigned integer into a boolean list, treating it as a bit field.
     /// </summary>
@@ -59,7 +56,6 @@ public static class ByteExtensions
 
         UnpackInternal_Fallback(value, destination);
     }
-#endif
 
     [MethodImpl(CompilerResources.MethodImplOptions)]
     internal static void UnpackInternal_Fallback(this byte value, Span<bool> destination)

X10D/src/Collections/Int16Extensions.cs

@@ -1,7 +1,5 @@
-#if !NET7_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
-using System.Diagnostics.CodeAnalysis;
 using System.Diagnostics.Contracts;
-#endif
 using System.Runtime.CompilerServices;
 using X10D.CompilerServices;
 
@@ -19,7 +17,6 @@ public static class Int16Extensions
 {
     private const int Size = sizeof(short) * 8;
 
-#if !NET7_0_OR_GREATER
     /// <summary>
     ///     Unpacks this 16-bit signed integer into a boolean list, treating it as a bit field.
     /// </summary>
@@ -59,7 +56,6 @@ public static class Int16Extensions
 
         UnpackInternal_Fallback(value, destination);
     }
-#endif
 
     [MethodImpl(CompilerResources.MethodImplOptions)]
     internal static void UnpackInternal_Fallback(this short value, Span<bool> destination)

X10D/src/Collections/Int32Extensions.cs

@@ -1,7 +1,5 @@
-#if !NET7_0_OR_GREATER
+using System.Diagnostics.CodeAnalysis;
-using System.Diagnostics.CodeAnalysis;
 using System.Diagnostics.Contracts;
-#endif
 using System.Runtime.CompilerServices;
 using X10D.CompilerServices;
 
@@ -19,7 +17,6 @@ public static class Int32Extensions
 {
     private const int Size = sizeof(int) * 8;
 
-#if !NET7_0_OR_GREATER
     /// <summary>
     ///     Unpacks this 32-bit signed integer into a boolean list, treating it as a bit field.
     /// </summary>
@@ -65,7 +62,6 @@ public static class Int32Extensions
 
         UnpackInternal_Fallback(value, destination);
     }
-#endif
 
     [MethodImpl(CompilerResources.MethodImplOptions)]
     internal static void UnpackInternal_Fallback(this int value, Span<bool> destination)

X10D/src/Collections/Int64Extensions.cs

@@ -1,5 +1,4 @@
-#if !NET7_0_OR_GREATER
+using System.Diagnostics.Contracts;
-using System.Diagnostics.Contracts;
 
 namespace X10D.Collections;
 
@@ -42,4 +41,3 @@ public static class Int64Extensions
         }
     }
 }
-#endif