libcxx/test/std/numerics/numarray/template.valarray/valarray.members/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 // size_t size() 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 a1[] = {1, 2, 3, 4, 5};
  25         const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
  26         std::valarray<T> v1(a1, N1);
  27         assert(v1.size() == N1);
  28     }
  29     {
  30         typedef int T;
  31         T a1[] = {1, 2, 3, 4, 5};
  32         const unsigned N1 = 0;
  33         std::valarray<T> v1(a1, N1);
  34         assert(v1.size() == N1);
  35     }
  36     {
  37         typedef int T;
  38         const unsigned N1 = 0;
  39         std::valarray<T> v1;
  40         assert(v1.size() == N1);
  41     }
  42
  43   return 0;
  44 }