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 *  *  information regarding copyright ownership.
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 *  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 *  * License for the specific language governing permissions and limitations
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package org.eclipse.deeplearning4j.nd4j.linalg.api.blas;

import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.nd4j.common.tests.tags.NativeTag;
import org.nd4j.linalg.BaseNd4jTestWithBackends;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import org.nd4j.linalg.factory.Nd4jBackend;

import static org.junit.jupiter.api.Assertions.assertEquals;

@NativeTag
public class Level3Test extends BaseNd4jTestWithBackends {

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm1(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 100, 100).reshape(1, 100);
        INDArray array2 = Nd4j.linspace(1, 100, 100).reshape(100, 1);

        INDArray array3 = array1.mmul(array2);

        assertEquals(338350f, array3.getFloat(0), 0.001f);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm2(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 100, 100).reshape('f', 1, 100);
        INDArray array2 = Nd4j.linspace(1, 100, 100).reshape('f', 100, 1);

        INDArray array3 = array1.mmul(array2);

        assertEquals(338350f, array3.getFloat(0), 0.001f);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm3(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 1000, 1000).reshape(10, 100);
        INDArray array2 = Nd4j.linspace(1, 1000, 1000).reshape(100, 10);

        INDArray array3 = array1.mmul(array2, Nd4j.createUninitialized(new long[]{10, 10}, 'f'));


        //System.out.println("Array3: " + Arrays.toString(array3.data().asFloat()));

        assertEquals(3338050.0f, array3.data().getFloat(0), 0.001f);
        assertEquals(8298050.0f, array3.data().getFloat(1), 0.001f);
        assertEquals(3343100.0f, array3.data().getFloat(10), 0.001f);
        assertEquals(8313100.0f, array3.data().getFloat(11), 0.001f);
        assertEquals(3348150.0f, array3.data().getFloat(20), 0.001f);
        assertEquals(8328150.0f, array3.data().getFloat(21), 0.001f);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm4(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 1000, 1000).reshape(10, 100);
        INDArray array2 = Nd4j.linspace(1, 1000, 1000).reshape('f', 100, 10);

        INDArray array3 = array1.mmul(array2);

        //System.out.println("Array3: " + Arrays.toString(array3.data().asFloat()));

        assertEquals(338350f, array3.data().getFloat(0), 0.001f);
        assertEquals(843350f, array3.data().getFloat(1), 0.001f);
        assertEquals(843350f, array3.data().getFloat(10), 0.001f);
        assertEquals(2348350f, array3.data().getFloat(11), 0.001f);
        assertEquals(1348350f, array3.data().getFloat(20), 0.001f);
        assertEquals(3853350f, array3.data().getFloat(21), 0.001f);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm5(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 1000, 1000).reshape('f', 10, 100);
        INDArray array2 = Nd4j.linspace(1, 1000, 1000).reshape(100, 10);

        INDArray array3 = array1.mmul(array2);

        //System.out.println("Array3: " + Arrays.toString(array3.data().asFloat()));

        //assertEquals(3.29341E7f, array3.data().getFloat(0),10f);
        assertEquals(3.29837E7f, array3.data().getFloat(1), 10f);
        assertEquals(3.3835E7f, array3.data().getFloat(99), 10f);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testGemm6(Nd4jBackend backend) {
        INDArray array1 = Nd4j.linspace(1, 1000, 1000).reshape('f', 10, 100);
        INDArray array2 = Nd4j.linspace(1, 1000, 1000).reshape('f', 100, 10);

        INDArray array3 = array1.mmul(array2);

        //System.out.println("Array3: " + Arrays.toString(array3.data().asFloat()));

        assertEquals(3338050.0f, array3.data().getFloat(0), 0.001f);
        assertEquals(3343100f, array3.data().getFloat(1), 0.001f);
        assertEquals(8298050f, array3.data().getFloat(10), 0.001f);
        assertEquals(8313100.0f, array3.data().getFloat(11), 0.001f);
        assertEquals(1.325805E7f, array3.data().getFloat(20), 5f);
        assertEquals(1.32831E7f, array3.data().getFloat(21), 5f);
    }

    @Override
    public char ordering() {
        return 'c';
    }
}
