Fixes #64

.github/workflows/conda-package.yml

@@ -0,0 +1,113 @@
+name: Conda package
+
+on: push
+
+env:
+  PACKAGE_NAME: mkl_fft
+  MODULE_NAME: mkl_fft
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python: [3.8]
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Set pkgs_dirs
+        run: |
+          echo "pkgs_dirs: [~/.conda/pkgs]" >> ~/.condarc
+      - name: Cache conda packages
+        uses: actions/cache@v2
+        env:
+          CACHE_NUMBER: 0  # Increase to reset cache
+        with:
+          path: ~/.conda/pkgs
+          key:
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-python-${{ matrix.python }}-${{hashFiles('**/meta.yaml') }}
+          restore-keys: |
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-python-${{ matrix.python }}-
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-
+
+      - name: Add conda to system path
+        run: echo $CONDA/bin >> $GITHUB_PATH
+      - name: Install conda-build
+        run: conda install conda-build
+      - name: Build conda package
+        run: |
+          CHANNELS="-c intel -c defaults --override-channels"
+          VERSIONS="--python ${{ matrix.python }}"
+          TEST="--no-test"
+
+          conda build \
+            $TEST \
+            $VERSIONS \
+            $CHANNELS \
+            conda-recipe
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ env.PACKAGE_NAME }} ${{ runner.os }} Python ${{ matrix.python }}
+          path: /usr/share/miniconda/conda-bld/linux-64/${{ env.PACKAGE_NAME }}-*.tar.bz2
+
+  test:
+    needs: build
+    runs-on:  ${{ matrix.runner }}
+
+    strategy:
+      matrix:
+        python: [3.8]
+        experimental: [false]
+        runner: [ubuntu-latest]
+    continue-on-error: ${{ matrix.experimental }}
+    env:
+      CHANNELS: -c intel -c defaults --override-channels
+
+    steps:
+      - name: Download artifact
+        uses: actions/download-artifact@v2
+        with:
+          name: ${{ env.PACKAGE_NAME }} ${{ runner.os }} Python ${{ matrix.python }}
+      - name: Add conda to system path
+        run: echo $CONDA/bin >> $GITHUB_PATH
+      - name: Install conda-build
+        run: conda install conda-build
+      - name: Create conda channel
+        run: |
+          mkdir -p $GITHUB_WORKSPACE/channel/linux-64
+          mv ${PACKAGE_NAME}-*.tar.bz2 $GITHUB_WORKSPACE/channel/linux-64
+          conda index $GITHUB_WORKSPACE/channel
+          # Test channel
+          conda search $PACKAGE_NAME -c $GITHUB_WORKSPACE/channel --override-channels
+
+      - name: Collect dependencies
+        run: |
+          CHANNELS="-c $GITHUB_WORKSPACE/channel ${{ env.CHANNELS }}"
+          conda install $PACKAGE_NAME python=${{ matrix.python }} $CHANNELS --only-deps --dry-run > lockfile
+      - name: Set pkgs_dirs
+        run: |
+          echo "pkgs_dirs: [~/.conda/pkgs]" >> ~/.condarc
+      - name: Cache conda packages
+        uses: actions/cache@v2
+        env:
+          CACHE_NUMBER: 0  # Increase to reset cache
+        with:
+          path: ~/.conda/pkgs
+          key:
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-python-${{ matrix.python }}-${{hashFiles('lockfile') }}
+          restore-keys: |
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-python-${{ matrix.python }}-
+            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-
+
+      - name: Install mkl_fft
+        run: |
+          CHANNELS="-c $GITHUB_WORKSPACE/channel ${{ env.CHANNELS }}"
+          conda install $PACKAGE_NAME pytest python=${{ matrix.python }} $CHANNELS
+          # Test installed packages
+          conda list
+      - name: Run tests
+        run: |
+          python -m pytest --pyargs $MODULE_NAME

mkl_fft/_pydfti.pyx

@@ -944,7 +944,7 @@ def iter_complementary(x, axes, func, kwargs, result):
             size *= x_shape[ri]
             sub_shape.append(x_shape[ri])
             dual_ind.append(ri)
-    
+
     for ind in range(size):
         m_ind = flat_to_multi(ind, sub_shape)
         for k1, k2 in zip(dual_ind, m_ind):
@@ -1077,7 +1077,7 @@ def _fftnd_impl(x, shape=None, axes=None, overwrite_x=False, direction=+1, doubl
     if _direct:
         return _direct_fftnd(x, overwrite_arg=overwrite_x, direction=direction, fsc=fsc)
     else:
-        if (shape is None):
+        if (shape is None and x.dtype in [np.complex64, np.complex128, np.float32, np.float64]):
             x = np.asarray(x)
             res = np.empty(x.shape, dtype=_output_dtype(x.dtype))
             return iter_complementary(

mkl_fft/tests/test_fftnd.py

@@ -113,8 +113,8 @@ def test_matrix5(self):
                     mkl_fft.fftn(y[i0, :, : , i3]),
                     rtol=r_tol, atol=a_tol
                 )
-        
-            
+
+
 
 
 class Test_Regressions(TestCase):
@@ -147,6 +147,16 @@ def test_rfftn_numpy(self):
                 tr_rfft = np.transpose(mkl_fft.rfftn_numpy(x, axes=a), a)
                 assert_allclose(rfft_tr, tr_rfft, rtol=r_tol, atol=a_tol)
 
+    def test_gh64(self):
+        """Test example from #64"""
+        a = np.arange(12).reshape((3,4))
+        x = a.astype(np.cdouble)
+        # should executed successfully
+        r1 = mkl_fft.fftn(a, shape=None, axes=(-2,-1))
+        r2 = mkl_fft.fftn(x)
+        r_tol, a_tol = _get_rtol_atol(x)
+        assert_allclose(r1, r2, rtol=r_tol, atol=a_tol)
+
 
 class Test_Scales(TestCase):
     def setUp(self):
@@ -185,7 +195,7 @@ def test_scale_nd(self):
         X.flat[:] = np.cbrt(np.arange(0, X.size, dtype=X.dtype))
         f = mkl_fft.fftn(X)
         f_scale = mkl_fft.fftn(X, forward_scale=0.2)
-        
+
         r_tol, a_tol = _get_rtol_atol(X)
         assert_allclose(f, 5*f_scale, rtol=r_tol, atol=a_tol)
 
@@ -194,7 +204,6 @@ def test_scale_nd_axes(self):
         X.flat[:] = np.cbrt(np.arange(X.size, dtype=X.dtype))
         f = mkl_fft.fftn(X, axes=(0, 1, 2, 3))
         f_scale = mkl_fft.fftn(X, axes=(0, 1, 2, 3), forward_scale=0.2)
-        
+
         r_tol, a_tol = _get_rtol_atol(X)
         assert_allclose(f, 5*f_scale, rtol=r_tol, atol=a_tol)
-