Cleanup net40 compiler directives, fix missing handling of net48 in Control.

src/Numerics.Tests/Random/RandomSerializationTests.cs

@@ -27,7 +27,7 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-#if NET40_OR_GREATER
+#if NET461_OR_GREATER
 // Rationale: System.Random is no longer serializable in .Net Core
 
 using System;

src/Numerics/AppSwitches.cs

@@ -46,26 +46,14 @@ namespace MathNet.Numerics
         const string AppSwitchDisableCudaNativeProvider = "Switch.MathNet.Numerics.Providers.DisableCudaNativeProvider";
         const string AppSwitchDisableOpenBlasNativeProvider = "Switch.MathNet.Numerics.Providers.DisableOpenBlasNativeProvider";
 
-#if NET40
-        static readonly System.Collections.Generic.Dictionary<string, bool> Switches = new System.Collections.Generic.Dictionary<string, bool>();
-#endif
-
         static void SetSwitch(string switchName, bool isEnabled)
         {
-#if NET40
-            Switches[switchName] = isEnabled;
-#else
             System.AppContext.SetSwitch(switchName, isEnabled);
-#endif
         }
 
         static bool IsEnabled(string switchName)
         {
-#if NET40
-            return Switches.TryGetValue(switchName, out bool isEnabled) && isEnabled;
-#else
             return System.AppContext.TryGetSwitch(switchName, out bool isEnabled) && isEnabled;
-#endif
         }
 
         public static bool DisableNativeProviderProbing

src/Numerics/Compatibility.cs

@@ -1,44 +0,0 @@
-#if NET40
-using System.Globalization;
-
-namespace System.Runtime.CompilerServices
-{
-    internal class FormattableStringFactory
-    {
-        public static FormattableString Create(string format, params object[] args)
-        {
-            return new FormattableString(format, args);
-        }
-    }
-}
-
-namespace System
-{
-    internal class FormattableString
-    {
-        readonly string _format;
-        readonly object[] _args;
-
-        public FormattableString(string format, object[] args)
-        {
-            _format = format;
-            _args = args;
-        }
-
-        public static string Invariant(FormattableString messageFormat)
-        {
-            return messageFormat.ToString(CultureInfo.InvariantCulture);
-        }
-
-        public string ToString(IFormatProvider formatProvider)
-        {
-            return string.Format(formatProvider, _format, _args);
-        }
-
-        public override string ToString()
-        {
-            return string.Format(_format, _args);
-        }
-    }
-}
-#endif

src/Numerics/Control.cs

@@ -35,11 +35,7 @@ using MathNet.Numerics.Providers.SparseSolver;
 using MathNet.Numerics.Providers.FourierTransform;
 using MathNet.Numerics.Providers.LinearAlgebra;
 
-#if NET40
+#if !NET461
-using System.Linq;
-#endif
-
-#if !NET40 && !NET461
 using System.Runtime.InteropServices;
 #endif
 
@@ -310,14 +306,7 @@ namespace MathNet.Numerics
 
         public static string Describe()
         {
-#if NET40
-            var versionAttribute = typeof(Control).Assembly
-                .GetCustomAttributes(typeof(AssemblyInformationalVersionAttribute), false)
-                .OfType<AssemblyInformationalVersionAttribute>()
-                .FirstOrDefault();
-#else
             var versionAttribute = typeof(Control).GetTypeInfo().Assembly.GetCustomAttribute(typeof(AssemblyInformationalVersionAttribute)) as AssemblyInformationalVersionAttribute;
-#endif
 
             var sb = new StringBuilder();
             sb.AppendLine("Math.NET Numerics Configuration:");
@@ -328,10 +317,10 @@ namespace MathNet.Numerics
             sb.AppendLine("Built for .Net 5.0+");
 #elif NETSTANDARD2_0
             sb.AppendLine("Built for .Net Standard 2.0");
+#elif NET48
+            sb.AppendLine("Built for .Net Framework 4.8");
 #elif NET461
             sb.AppendLine("Built for .Net Framework 4.6.1");
-#elif NET40
-            sb.AppendLine("Built for .Net Framework 4.0");
 #endif
 
             sb.AppendLine($"Linear Algebra Provider: {LinearAlgebraControl.Provider}");
@@ -342,7 +331,7 @@ namespace MathNet.Numerics
             sb.AppendLine($"Parallelize Order: {ParallelizeOrder}");
             sb.AppendLine($"Check Distribution Parameters: {CheckDistributionParameters}");
             sb.AppendLine($"Thread-Safe RNGs: {ThreadSafeRandomNumberGenerators}");
-#if NET40 || NET461
+#if NET461
             sb.AppendLine($"Operating System: {Environment.OSVersion}");
             sb.AppendLine($"Framework: {Environment.Version}");
 #else

src/Numerics/Euclid.cs

@@ -42,9 +42,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Canonical Modulus. The result has the sign of the divisor.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static double Modulus(double dividend, double divisor)
         {
             return ((dividend%divisor) + divisor)%divisor;
@@ -53,9 +51,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Canonical Modulus. The result has the sign of the divisor.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static float Modulus(float dividend, float divisor)
         {
             return ((dividend%divisor) + divisor)%divisor;
@@ -64,9 +60,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Canonical Modulus. The result has the sign of the divisor.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static int Modulus(int dividend, int divisor)
         {
             return ((dividend%divisor) + divisor)%divisor;
@@ -75,9 +69,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Canonical Modulus. The result has the sign of the divisor.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static long Modulus(long dividend, long divisor)
         {
             return ((dividend%divisor) + divisor)%divisor;
@@ -86,9 +78,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Canonical Modulus. The result has the sign of the divisor.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static BigInteger Modulus(BigInteger dividend, BigInteger divisor)
         {
             return ((dividend%divisor) + divisor)%divisor;
@@ -97,9 +87,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Remainder (% operator). The result has the sign of the dividend.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static double Remainder(double dividend, double divisor)
         {
             return dividend%divisor;
@@ -108,9 +96,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Remainder (% operator). The result has the sign of the dividend.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static float Remainder(float dividend, float divisor)
         {
             return dividend%divisor;
@@ -119,9 +105,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Remainder (% operator). The result has the sign of the dividend.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static int Remainder(int dividend, int divisor)
         {
             return dividend%divisor;
@@ -130,9 +114,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Remainder (% operator). The result has the sign of the dividend.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static long Remainder(long dividend, long divisor)
         {
             return dividend%divisor;
@@ -141,9 +123,7 @@ namespace MathNet.Numerics
         /// <summary>
         /// Remainder (% operator). The result has the sign of the dividend.
         /// </summary>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static BigInteger Remainder(BigInteger dividend, BigInteger divisor)
         {
             return dividend%divisor;
@@ -154,9 +134,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's even.</param>
         /// <returns>True if and only if it is an even number.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsEven(this int number)
         {
             return (number & 0x1) == 0x0;
@@ -167,9 +145,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's even.</param>
         /// <returns>True if and only if it is an even number.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsEven(this long number)
         {
             return (number & 0x1) == 0x0;
@@ -180,9 +156,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's odd.</param>
         /// <returns>True if and only if it is an odd number.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsOdd(this int number)
         {
             return (number & 0x1) == 0x1;
@@ -193,9 +167,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's odd.</param>
         /// <returns>True if and only if it is an odd number.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsOdd(this long number)
         {
             return (number & 0x1) == 0x1;
@@ -206,9 +178,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's a power of two.</param>
         /// <returns>True if and only if it is a power of two.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsPowerOfTwo(this int number)
         {
             return number > 0 && (number & (number - 1)) == 0x0;
@@ -219,9 +189,7 @@ namespace MathNet.Numerics
         /// </summary>
         /// <param name="number">The number to very whether it's a power of two.</param>
         /// <returns>True if and only if it is a power of two.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         public static bool IsPowerOfTwo(this long number)
         {
             return number > 0 && (number & (number - 1)) == 0x0;

src/Numerics/LinearAlgebra/Matrix.cs

@@ -88,15 +88,11 @@ namespace MathNet.Numerics.LinearAlgebra
         /// to get and set values without range checking.</remarks>
         public T this[int row, int column]
         {
-#if !NET40
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
             [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
             get { return Storage[row, column]; }
 
-#if !NET40
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
             [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
             set { Storage[row, column] = value; }
         }
@@ -113,9 +109,7 @@ namespace MathNet.Numerics.LinearAlgebra
         /// <returns>
         /// The requested element.
         /// </returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
         public T At(int row, int column)
         {
@@ -134,9 +128,7 @@ namespace MathNet.Numerics.LinearAlgebra
         /// <param name="value">
         /// The value to set the element to.
         /// </param>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
         public void At(int row, int column, T value)
         {

src/Numerics/LinearAlgebra/Vector.cs

@@ -72,15 +72,11 @@ namespace MathNet.Numerics.LinearAlgebra
         /// greater than the size of the vector.</exception>
         public T this[int index]
         {
-#if !NET40
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
             [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
             get { return Storage[index]; }
 
-#if !NET40
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
             [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
             set { Storage[index] = value; }
         }
@@ -88,9 +84,7 @@ namespace MathNet.Numerics.LinearAlgebra
         /// <summary>Gets the value at the given <paramref name="index"/> without range checking..</summary>
         /// <param name="index">The index of the value to get or set.</param>
         /// <returns>The value of the vector at the given <paramref name="index"/>.</returns>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
         public T At(int index)
         {
@@ -100,9 +94,7 @@ namespace MathNet.Numerics.LinearAlgebra
         /// <summary>Sets the <paramref name="value"/> at the given <paramref name="index"/> without range checking..</summary>
         /// <param name="index">The index of the value to get or set.</param>
         /// <param name="value">The value to set.</param>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         [TargetedPatchingOptOut("Performance critical to inline across NGen image boundaries")]
         public void At(int index, T value)
         {

src/Numerics/Polynomial.cs

@@ -64,11 +64,7 @@ namespace MathNet.Numerics
         /// </summary>
         public Polynomial()
         {
-#if NET40
-            Coefficients = new double[0];
-#else
             Coefficients = Array.Empty<double>();
-#endif
         }
 
         /// <summary>
@@ -80,11 +76,7 @@ namespace MathNet.Numerics
         {
             if (coefficient == 0.0)
             {
-#if NET40
-                Coefficients = new double[0];
-#else
                 Coefficients = Array.Empty<double>();
-#endif
             }
             else
             {

src/Numerics/Providers/FourierTransform/ManagedFourierTransformProvider.Radix2.cs

@@ -70,9 +70,7 @@ namespace MathNet.Numerics.Providers.FourierTransform
         /// <param name="exponentSign">Fourier series exponent sign.</param>
         /// <param name="levelSize">Level Group Size.</param>
         /// <param name="k">Index inside of the level.</param>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         static void Radix2Step(Complex32[] samples, int exponentSign, int levelSize, int k)
         {
             // Twiddle Factor
@@ -96,9 +94,7 @@ namespace MathNet.Numerics.Providers.FourierTransform
         /// <param name="exponentSign">Fourier series exponent sign.</param>
         /// <param name="levelSize">Level Group Size.</param>
         /// <param name="k">Index inside of the level.</param>
-#if !NET40
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-#endif
         static void Radix2Step(Complex[] samples, int exponentSign, int levelSize, int k)
         {
             // Twiddle Factor

src/Providers.CUDA/Compatibility.cs

@@ -1,44 +0,0 @@
-#if NET40
-using System.Globalization;
-
-namespace System.Runtime.CompilerServices
-{
-    internal class FormattableStringFactory
-    {
-        public static FormattableString Create(string format, params object[] args)
-        {
-            return new FormattableString(format, args);
-        }
-    }
-}
-
-namespace System
-{
-    internal class FormattableString
-    {
-        readonly string _format;
-        readonly object[] _args;
-
-        public FormattableString(string format, object[] args)
-        {
-            _format = format;
-            _args = args;
-        }
-
-        public static string Invariant(FormattableString messageFormat)
-        {
-            return messageFormat.ToString(CultureInfo.InvariantCulture);
-        }
-
-        public string ToString(IFormatProvider formatProvider)
-        {
-            return string.Format(formatProvider, _format, _args);
-        }
-
-        public override string ToString()
-        {
-            return string.Format(_format, _args);
-        }
-    }
-}
-#endif

src/Providers.MKL/Compatibility.cs

@@ -1,44 +0,0 @@
-#if NET40
-using System.Globalization;
-
-namespace System.Runtime.CompilerServices
-{
-    internal class FormattableStringFactory
-    {
-        public static FormattableString Create(string format, params object[] args)
-        {
-            return new FormattableString(format, args);
-        }
-    }
-}
-
-namespace System
-{
-    internal class FormattableString
-    {
-        readonly string _format;
-        readonly object[] _args;
-
-        public FormattableString(string format, object[] args)
-        {
-            _format = format;
-            _args = args;
-        }
-
-        public static string Invariant(FormattableString messageFormat)
-        {
-            return messageFormat.ToString(CultureInfo.InvariantCulture);
-        }
-
-        public string ToString(IFormatProvider formatProvider)
-        {
-            return string.Format(formatProvider, _format, _args);
-        }
-
-        public override string ToString()
-        {
-            return string.Format(_format, _args);
-        }
-    }
-}
-#endif

src/Providers.OpenBLAS/Compatibility.cs

@@ -1,44 +0,0 @@
-#if NET40
-using System.Globalization;
-
-namespace System.Runtime.CompilerServices
-{
-    internal class FormattableStringFactory
-    {
-        public static FormattableString Create(string format, params object[] args)
-        {
-            return new FormattableString(format, args);
-        }
-    }
-}
-
-namespace System
-{
-    internal class FormattableString
-    {
-        readonly string _format;
-        readonly object[] _args;
-
-        public FormattableString(string format, object[] args)
-        {
-            _format = format;
-            _args = args;
-        }
-
-        public static string Invariant(FormattableString messageFormat)
-        {
-            return messageFormat.ToString(CultureInfo.InvariantCulture);
-        }
-
-        public string ToString(IFormatProvider formatProvider)
-        {
-            return string.Format(formatProvider, _format, _args);
-        }
-
-        public override string ToString()
-        {
-            return string.Format(_format, _args);
-        }
-    }
-}
-#endif