libstdc++-v3/testsuite/26_numerics/slice/1.cc

   1 // 20020717 gdr
   2
   3 // Copyright (C) 2002-2020 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // Test slice class invariants
  21
  22 #include <valarray>
  23 #include <cstdlib>
  24 #include <testsuite_hooks.h>
  25
  26 bool
  27 construction(std::size_t start, std::size_t size, std::size_t stride)
  28 {
  29   std::slice s(start, size, stride);
  30   return s.start() == start && s.size() == size && s.stride() == stride;
  31 }
  32
  33 bool
  34 copy(std::size_t start, std::size_t size, std::size_t stride)
  35 {
  36   std::slice s(start, size, stride);
  37   std::slice t = s;
  38   return t.start() == start && t.size() == size && t.stride() == stride;
  39 }
  40
  41 bool
  42 assignment(std::size_t start, std::size_t size, std::size_t stride)
  43 {
  44   std::slice s(start, size, stride);
  45   std::slice t;
  46   t = s;
  47   return t.start() == start && t.size() == size && t.stride() == stride;
  48 }
  49
  50
  51 int main()
  52 {
  53   std::srand(20020717);
  54   using std::rand;
  55   VERIFY(construction(rand(), rand(), rand()));
  56
  57   VERIFY(copy(rand(), rand(), rand()));
  58
  59   VERIFY(assignment(rand(), rand(), rand()));
  60
  61   return 0;
  62 }