Add LAPACK Provider Strategy (MKL not!!! implemented yet)

.vscode/launch.json

@@ -4,6 +4,14 @@
    // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
    "version": "0.2.0",
    "configurations": [
+       {
+           "type": "PowerShell",
+           "request": "launch",
+           "name": "PowerShell Launch Current File",
+           "script": "${file}",
+           "args": [],
+           "cwd": "${file}"
+       },
        {
            "name": "NumSharp Example - Water equation",
            "type": "coreclr",

ExecuteBuild.ps1

@@ -0,0 +1,10 @@
+Write-Output "--------------------"
+Write-Output "Start with building"
+Write-Output "--------------------"
+
+$projectFolders = @{};
+
+$projectFolders['projectRoot'] = $PSScriptRoot;
+$projectFolders['Projects.Core'] = Join-Path $projectFolders['projectRoot'] src/NumSharp.Core/NumSharp.Core.csproj
+
+dotnet build $projectFolders['Projects.Core']

src/NumSharp.Core/LAPACK.cs → src/NumSharp.Core/LinearAlgebra/LAPACK.Provider/LAPACK.NetLib.cs

@@ -1,9 +1,9 @@
-using System;
+using System;
 using System.Runtime.InteropServices;
 
-namespace NumSharp.Core
+namespace NumSharp.Core.LAPACKProvider
 {
-    public static partial class LAPACK
+    public static partial class NetLib
     {
         [DllImport("lapack")]
         public static extern void dgesv_(ref int n, ref int nrhs, double[] a, ref int lda, int[] ipiv, double[] b, ref int ldb, ref int info  );

src/NumSharp.Core/LinearAlgebra/LAPACK.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Runtime.InteropServices;
+using NumSharp.Core.LAPACKProvider;
+using NumSharp.Core;
+
+namespace NumSharp.Core
+{
+    public static partial class LAPACK
+    {
+        public static void dgesv_(ref int n, ref int nrhs, double[] a, ref int lda, int[] ipiv, double[] b, ref int ldb, ref int info  )
+        {
+            switch (np.LAPACKProvider)
+            {
+                case LAPACKProvider.LAPACKProvider.NetLib :
+                {
+                    LAPACKProvider.NetLib.dgesv_(ref n, ref nrhs, a, ref lda, ipiv, b, ref ldb, ref info);
+                    break;
+                }
+            }
+        }
+        public static void dgeqrf_(ref int m, ref int n, double[] a, ref int lda, double[] tau, double[] work, ref int lwork, ref int info)
+        {
+            switch (np.LAPACKProvider)
+            {
+                case LAPACKProvider.LAPACKProvider.NetLib :
+                {
+                    LAPACKProvider.NetLib.dgeqrf_(ref m, ref n, a, ref lda, tau, work, ref lwork, ref info);
+                    break;
+                }
+            }
+        }
+        public static void dorgqr_(ref int m,ref int n, ref int k, double[] a, ref int lda, double[] tau, double[]work, ref int lwork,ref int info)
+        {
+            switch (np.LAPACKProvider)
+            {
+                case LAPACKProvider.LAPACKProvider.NetLib :
+                {
+                    LAPACKProvider.NetLib.dorgqr_(ref m, ref n,ref k, a, ref lda, tau, work, ref lwork, ref info);
+                    break;
+                }
+            }
+        }        
+        public static void dgelss_( ref int m, ref int n, ref int nrhs, double[] a,ref int lda, double[] b, ref int ldb, double[] s,ref double rcond, ref int rank, double[] work,ref int lwork, ref int info )
+        {
+            switch (np.LAPACKProvider)
+            {
+                case LAPACKProvider.LAPACKProvider.NetLib :
+                {
+                    LAPACKProvider.NetLib.dgelss_(ref m, ref n, ref nrhs, a, ref lda, b, ref ldb, s, ref rcond, ref rank, work, ref lwork, ref info);
+                    break;
+                }
+            }
+        }
+        public static void dgesvd_(char[] JOBU,char[] JOBVT, ref int M, ref int N, double[] A, ref int LDA, double[] S, double[] U, ref int LDU, double[] VT, ref int LDVT, double[] WORK, ref int LWORK, ref int INFO )
+        {
+            switch (np.LAPACKProvider)
+            {
+                case LAPACKProvider.LAPACKProvider.NetLib :
+                {
+                    LAPACKProvider.NetLib.dgesvd_(JOBU, JOBVT, ref M, ref N, A, ref LDA, S, U, ref LDU, VT, ref LDVT, WORK, ref LWORK, ref INFO);
+                    break;
+                }
+            }
+        }
+    }
+}

src/NumSharp.Core/LinearAlgebra/np.LAPACK.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace NumSharp.Core.LAPACKProvider
+{
+    public enum LAPACKProvider
+    {
+        NetLib    
+    }
+}
+namespace NumSharp.Core
+{
+    public static partial class np
+    {
+        public static NumSharp.Core.LAPACKProvider.LAPACKProvider LAPACKProvider = NumSharp.Core.LAPACKProvider.LAPACKProvider.NetLib;
+    }
+}

src/NumSharp.Core/NDStorage.cs

@@ -439,6 +439,10 @@ public void ChangeDataType(Type dtype)
                 _values = this._ChangeTypeOfArray(_values,dtype);
             _DType = dtype;
         }
+        public void SetNewShape(params int[] dimensions)
+        {
+            _Shape = new Shape(dimensions);
+        }
         public void Reshape(params int[] dimensions)
         {
             if (_TensorLayout == 2)