eigen/test/smallvectors.cpp

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
//
// Eigen is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// Alternatively, you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License and a copy of the GNU General Public License along with
// Eigen. If not, see <http://www.gnu.org/licenses/>.

#define EIGEN_NO_STATIC_ASSERT
#include "main.h"

template<typename Scalar> void smallVectors()
{
  typedef Matrix<Scalar, 1, 2> V2;
  typedef Matrix<Scalar, 3, 1> V3;
  typedef Matrix<Scalar, 1, 4> V4;
  typedef Matrix<Scalar, Dynamic, 1> VX;
  Scalar x1 = internal::random<Scalar>(),
         x2 = internal::random<Scalar>(),
         x3 = internal::random<Scalar>(),
         x4 = internal::random<Scalar>();
  V2 v2(x1, x2);
  V3 v3(x1, x2, x3);
  V4 v4(x1, x2, x3, x4);
  VERIFY_IS_APPROX(x1, v2.x());
  VERIFY_IS_APPROX(x1, v3.x());
  VERIFY_IS_APPROX(x1, v4.x());
  VERIFY_IS_APPROX(x2, v2.y());
  VERIFY_IS_APPROX(x2, v3.y());
  VERIFY_IS_APPROX(x2, v4.y());
  VERIFY_IS_APPROX(x3, v3.z());
  VERIFY_IS_APPROX(x3, v4.z());
  VERIFY_IS_APPROX(x4, v4.w());

  if (!NumTraits<Scalar>::IsInteger)
  {
    VERIFY_RAISES_ASSERT(V3(2, 1))
    VERIFY_RAISES_ASSERT(V3(3, 2))
    VERIFY_RAISES_ASSERT(V3(Scalar(3), 1))
    VERIFY_RAISES_ASSERT(V3(3, Scalar(1)))
    VERIFY_RAISES_ASSERT(V3(Scalar(3), Scalar(1)))
    VERIFY_RAISES_ASSERT(V3(Scalar(123), Scalar(123)))

    VERIFY_RAISES_ASSERT(V4(1, 3))
    VERIFY_RAISES_ASSERT(V4(2, 4))
    VERIFY_RAISES_ASSERT(V4(1, Scalar(4)))
    VERIFY_RAISES_ASSERT(V4(Scalar(1), 4))
    VERIFY_RAISES_ASSERT(V4(Scalar(1), Scalar(4)))
    VERIFY_RAISES_ASSERT(V4(Scalar(123), Scalar(123)))

    VERIFY_RAISES_ASSERT(VX(3, 2))
    VERIFY_RAISES_ASSERT(VX(Scalar(3), 1))
    VERIFY_RAISES_ASSERT(VX(3, Scalar(1)))
    VERIFY_RAISES_ASSERT(VX(Scalar(3), Scalar(1)))
    VERIFY_RAISES_ASSERT(VX(Scalar(123), Scalar(123)))
  }
}

void test_smallvectors()
{
  for(int i = 0; i < g_repeat; i++) {
    CALL_SUBTEST(smallVectors<int>() );
    CALL_SUBTEST(smallVectors<float>() );
    CALL_SUBTEST(smallVectors<double>() );
  }
}