text: //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  // <valarray>
  
  // template<class T> class valarray;
  
  // template<class T> valarray<T> operator<<(const T& x, const valarray<T>& y);
  
  #include <valarray>
  #include <cassert>
  #include <cstddef>
  
  int main(int, char**)
  {
      {
          typedef int T;
          T a1[] = { 1,   2,  3,  4,  5};
          T a2[] = { 6,  12, 24, 48, 96};
          const unsigned N = sizeof(a1)/sizeof(a1[0]);
          std::valarray<T> v1(a1, N);
          std::valarray<T> v2 = 3 << v1;
          assert(v1.size() == v2.size());
          for (std::size_t i = 0; i < v2.size(); ++i)
              assert(v2[i] == a2[i]);
      }
  
    return 0;
  }
  