     //--------------------------------------------------------------------------
     // testConcat
     func testConcat() {
-        let t1 = MatrixType<Float>(2, 3, with: 1...6)
-        let t2 = MatrixType<Float>(2, 3, with: 7...12)
+        let t1 = SwiftRT.Matrix<Float>(2, 3, with: 1...6)
+        let t2 = SwiftRT.Matrix<Float>(2, 3, with: 7...12)
         let c1 = t1.concat(t2)
 //        XCTAssert(c1.extents == [4, 3])
         let c1Expected: [Float] = [

    // test_neg
    func test_neg() {
        let range = 0..<6
        let matrix = MatrixType<Float>(3, 2, with: range)
        let expected: [Float] = range.map { -Float($0) }

        let values = matrix.neg().flatArray

    //--------------------------------------------------------------------------
    // test_squared
    func test_squared() {
        let matrix = SwiftRT.Matrix<Float>(3, 2, with: [0, -1, 2, -3, 4, 5])
        let values = matrix.squared().flatArray
        let expected: [Float] = (0...5).map { Float($0 * $0) }
        XCTAssert(values == expected)
