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

    //--------------------------------------------------------------------------
    // test_squared
    func test_squared() {
        let matrix = MatrixType<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)

    // test_log
    func test_log() {
        let range = 0..<6
        let matrix = SwiftRT.Matrix<Float>(3, 2, with: range)
        let values = log(matrix).flatArray
        let expected: [Float] = range.map { Foundation.log(Float($0)) }
        XCTAssert(values == expected)
