libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/pointer_size.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 // valarray(const value_type* p, size_t n);
  14
  15 #include <valarray>
  16 #include <cassert>
  17 #include <cstddef>
  18
  19 #include "test_macros.h"
  20
  21 int main(int, char**)
  22 {
  23     {
  24         typedef int T;
  25         T a[] = {1, 2, 3, 4, 5};
  26         const unsigned N = sizeof(a)/sizeof(a[0]);
  27         std::valarray<T> v(a, N);
  28         assert(v.size() == N);
  29         for (unsigned i = 0; i < N; ++i)
  30             assert(v[i] == a[i]);
  31     }
  32     {
  33         typedef double T;
  34         T a[] = {1, 2.5, 3, 4.25, 5};
  35         const unsigned N = sizeof(a)/sizeof(a[0]);
  36         std::valarray<T> v(a, N);
  37         assert(v.size() == N);
  38         for (unsigned i = 0; i < N; ++i)
  39             assert(v[i] == a[i]);
  40     }
  41     {
  42         typedef std::valarray<double> T;
  43         T a[] = {T(1), T(2), T(3), T(4), T(5)};
  44         const unsigned N = sizeof(a)/sizeof(a[0]);
  45         std::valarray<T> v(a, N);
  46         assert(v.size() == N);
  47         for (unsigned i = 0; i < N; ++i)
  48         {
  49             assert(v[i].size() == a[i].size());
  50             for (std::size_t j = 0; j < v[i].size(); ++j)
  51                 assert(v[i][j] == a[i][j]);
  52         }
  53     }
  54
  55   return 0;
  56 }