libcxx/test/std/numerics/numarray/template.valarray/valarray.access/const_access.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // <valarray>
  10
  11 // template<class T> class valarray;
  12
  13 // const value_type& operator[](size_t i) const;
  14
  15 #include <valarray>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 int main(int, char**)
  21 {
  22     {
  23         typedef int T;
  24         T a[] = {5, 4, 3, 2, 1};
  25         const unsigned N = sizeof(a)/sizeof(a[0]);
  26         const std::valarray<T> v(a, N);
  27         for (unsigned i = 0; i < N; ++i)
  28         {
  29             assert(v[i] == a[i]);
  30         }
  31     }
  32
  33   return 0;
  34 }