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// 2007-01-11  Paolo Carlini  <pcarlini@suse.de>

// Copyright (C) 2007, 2009 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; 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 3, or (at your option)

// any later version.

// This library 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 General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

#include <valarray>

#include <testsuite_hooks.h>

bool

comp_vala(const std::valarray<int>& v1, const std::valarray<int>& v2)

{

  if (v1.size() == v2.size())

    {

      for (size_t i = 0; i < v1.size(); ++i)

        if (v1[i] != v2[i])

          return false;

      return true;

    }

  return false;

}

void

init_vala(std::valarray<int>& v, size_t first, size_t last, int val)

{

  for (size_t i = first; i <= last; ++i)

    v[i] = val++;

}

// libstdc++/30416

void test01()

{

  bool test __attribute__((unused)) = true;

  using namespace std;

  // shift

  valarray<int> v1;

  valarray<int> v1_ris(v1.shift(0));

  VERIFY( comp_vala(v1, v1_ris) );

  valarray<int> v2;

  valarray<int> v2_ris(v2.shift(10));

  VERIFY( comp_vala(v2, v2_ris) );

  valarray<int> v3;

  valarray<int> v3_ris(v3.shift(-10));

  VERIFY( comp_vala(v3, v3_ris) );

  valarray<int> v4(10);

  valarray<int> v4_ris(v4.shift(0));

  VERIFY( comp_vala(v4, v4_ris) );

  valarray<int> v5(10);

  init_vala(v5, 0, 9, 1);

  valarray<int> v5_ref(10);

  valarray<int> v5_ris(v5.shift(16));

  VERIFY( comp_vala(v5_ris, v5_ref) );

  valarray<int> v6(10);

  init_vala(v6, 0, 9, 1);

  valarray<int> v6_ref(10);

  valarray<int> v6_ris(v6.shift(-16));

  VERIFY( comp_vala(v6_ris, v6_ref) );

  valarray<int> v7(10);

  init_vala(v7, 0, 9, 1);

  valarray<int> v7_ref(10);

  valarray<int> v7_ris(v7.shift(10));

  VERIFY( comp_vala(v7_ris, v7_ref) );

  valarray<int> v8(10);

  init_vala(v8, 0, 9, 1);

  valarray<int> v8_ref(10);

  valarray<int> v8_ris(v8.shift(-10));

  VERIFY( comp_vala(v8_ris, v8_ref) );

  valarray<int> v9(10);

  init_vala(v9, 0, 9, 1);

  valarray<int> v9_ref(10);

  init_vala(v9_ref, 0, 3, 7);

  valarray<int> v9_ris(v9.shift(6));

  VERIFY( comp_vala(v9_ris, v9_ref) );

  valarray<int> v10(10);

  init_vala(v10, 0, 9, 1);

  valarray<int> v10_ref(10);

  init_vala(v10_ref, 6, 9, 1);

  valarray<int> v10_ris(v10.shift(-6));

  VERIFY( comp_vala(v10_ris, v10_ref) );

  // cshift

  valarray<int> v11;

  valarray<int> v11_ris(v11.cshift(0));

  VERIFY( comp_vala(v11, v11_ris) );

  valarray<int> v12;

  valarray<int> v12_ris(v12.cshift(10));

  VERIFY( comp_vala(v12, v12_ris) );

  valarray<int> v13;

  valarray<int> v13_ris(v13.cshift(-10));

  VERIFY( comp_vala(v13, v13_ris) );

  valarray<int> v14(10);

  valarray<int> v14_ris(v14.cshift(0));

  VERIFY( comp_vala(v14, v14_ris) );

  valarray<int> v15(10);

  init_vala(v15, 0, 9, 1);

  valarray<int> v15_ref(10);

  init_vala(v15_ref, 0, 3, 7);

  init_vala(v15_ref, 4, 9, 1);

  valarray<int> v15_ris(v15.cshift(16));

  VERIFY( comp_vala(v15_ris, v15_ref) );

  valarray<int> v16(10);

  init_vala(v16, 0, 9, 1);

  valarray<int> v16_ref(10);

  init_vala(v16_ref, 0, 5, 5);

  init_vala(v16_ref, 6, 9, 1);

  valarray<int> v16_ris(v16.cshift(-16));

  VERIFY( comp_vala(v16_ris, v16_ref) );

  valarray<int> v17(10);

  init_vala(v17, 0, 9, 1);

  valarray<int> v17_ris(v15.cshift(10));

  VERIFY( comp_vala(v17, v17_ris) );

  valarray<int> v18(10);

  init_vala(v18, 0, 9, 1);

  valarray<int> v18_ris(v18.cshift(-10));

  VERIFY( comp_vala(v18, v18_ris) );

  valarray<int> v19(10);

  init_vala(v19, 0, 9, 1);

  valarray<int> v19_ref(10);

  init_vala(v19_ref, 0, 3, 7);

  init_vala(v19_ref, 4, 9, 1);

  valarray<int> v19_ris(v15.cshift(6));

  VERIFY( comp_vala(v19_ris, v19_ref) );

  valarray<int> v20(10);

  init_vala(v20, 0, 9, 1);

  valarray<int> v20_ref(10);

  init_vala(v20_ref, 0, 5, 5);

  init_vala(v20_ref, 6, 9, 1);

  valarray<int> v20_ris(v20.cshift(-6));

  VERIFY( comp_vala(v20_ris, v20_ref) );

}

int main()

{

  test01();

  return 0;

}