forked from tsai/mathnet-numerics
Christoph Ruegg
10 years ago
11 changed files with 284 additions and 14 deletions
@ -0,0 +1,33 @@ |
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#include "wrapper_common.h" |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <float.h> |
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#include "mkl_service.h" |
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#include "mkl_dfti.h" |
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extern "C" { |
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DLLEXPORT MKL_LONG z_fft_forward_inplace(MKL_LONG n, MKL_Complex16 x[]) |
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{ |
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MKL_LONG status = 0; |
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DFTI_DESCRIPTOR_HANDLE hand = 0; |
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status = DftiCreateDescriptor(&hand, DFTI_DOUBLE, DFTI_COMPLEX, 1, n); |
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if (0 != status) goto failed; |
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status = DftiCommitDescriptor(hand); |
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if (0 != status) goto failed; |
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status = DftiComputeForward(hand, x); |
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if (0 != status) goto failed; |
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cleanup: |
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DftiFreeDescriptor(&hand); |
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return status; |
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failed: |
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status = 1; |
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goto cleanup; |
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} |
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} |
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@ -0,0 +1,93 @@ |
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// <copyright file="SafeNativeMethods.cs" company="Math.NET">
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// Math.NET Numerics, part of the Math.NET Project
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// http://mathnet.opensourcedotnet.info
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//
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// Copyright (c) 2009-2016 Math.NET
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the "Software"), to deal in the Software without
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// restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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// </copyright>
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#if NATIVE
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using System.Numerics; |
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using System.Runtime.InteropServices; |
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using System.Security; |
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namespace MathNet.Numerics.Providers.FourierTransform.Mkl |
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{ |
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/// <summary>
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/// P/Invoke methods to the native math libraries.
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/// </summary>
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[SuppressUnmanagedCodeSecurity] |
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[SecurityCritical] |
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internal static class SafeNativeMethods |
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{ |
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// ReSharper disable InconsistentNaming
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/// <summary>
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/// Name of the native DLL.
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/// </summary>
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const string _DllName = "MathNet.Numerics.MKL.dll"; |
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internal static string DllName { get { return _DllName; } } |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern int query_capability(int capability); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern void set_consistency_mode(int mode); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern void set_vml_mode(uint mode); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern void set_max_threads(int num_threads); |
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#region Memory
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern void free_buffers(); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern void thread_free_buffers(); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern int disable_fast_mm(); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern long mem_stat([Out]out int allocatedBuffers); |
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern long peak_mem_usage(int mode); |
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#endregion Memory
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#region FFT
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[DllImport(_DllName, ExactSpelling = true, SetLastError = false, CallingConvention = CallingConvention.Cdecl)] |
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internal static extern long z_fft_forward_inplace(long n, [In, Out] Complex[] x); |
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#endregion FFT
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// ReSharper restore InconsistentNaming
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} |
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} |
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#endif
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@ -0,0 +1,81 @@ |
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// <copyright file="FourierTransformProviderTests.cs" company="Math.NET">
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// Math.NET Numerics, part of the Math.NET Project
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// http://numerics.mathdotnet.com
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// http://github.com/mathnet/mathnet-numerics
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//
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// Copyright (c) 2009-2016 Math.NET
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
|
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|
// files (the "Software"), to deal in the Software without
|
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// restriction, including without limitation the rights to use,
|
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// copy, modify, merge, publish, distribute, sublicense, and/or sell
|
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|
// copies of the Software, and to permit persons to whom the
|
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// Software is furnished to do so, subject to the following
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// conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
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|
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
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|
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
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// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
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// OTHER DEALINGS IN THE SOFTWARE.
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// </copyright>
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|
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using System; |
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using NUnit.Framework; |
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namespace MathNet.Numerics.UnitTests.FourierTransformProviderTests |
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{ |
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#if NOSYSNUMERICS
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using Complex = Numerics.Complex; |
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#else
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using Complex = System.Numerics.Complex; |
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#endif
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/// <summary>
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/// Base class for linear algebra provider tests.
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/// </summary>
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[TestFixture, Category("LAProvider")] |
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public class LinearAlgebraProviderTests |
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{ |
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[Test] |
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public void ForwardInplace() |
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{ |
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var samples = Generate.PeriodicMap(16, w => new Complex(Math.Sin(w), 0), 16, 1.0, Constants.Pi2); |
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var spectrum = new Complex[samples.Length]; |
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// real-odd transforms to imaginary odd
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samples.Copy(spectrum); |
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Control.FourierTransformProvider.ForwardInplace(spectrum); |
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// all real components must be zero
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foreach (var c in spectrum) |
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{ |
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Assert.AreEqual(0, c.Real, 1e-12, "real"); |
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} |
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// all imaginary components except second and last musth be zero
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for (var i = 0; i < spectrum.Length; i++) |
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{ |
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if (i == 1) |
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{ |
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Assert.AreEqual(-8, spectrum[i].Imaginary, 1e-12, "imag second"); |
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} |
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else if (i == spectrum.Length - 1) |
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{ |
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Assert.AreEqual(8, spectrum[i].Imaginary, 1e-12, "imag last"); |
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} |
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else |
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{ |
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Assert.AreEqual(0, spectrum[i].Imaginary, 1e-12, "imag"); |
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} |
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} |
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} |
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} |
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} |
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