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

   1 // 20020717 gdr
   2
   3 // Copyright (C) 2002, 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // Test slice class invariants
  22
  23 #include <valarray>
  24 #include <cstdlib>
  25 #include <testsuite_hooks.h>
  26
  27 bool
  28 construction(std::size_t start, std::size_t size, std::size_t stride)
  29 {
  30   std::slice s(start, size, stride);
  31   return s.start() == start && s.size() == size && s.stride() == stride;
  32 }
  33
  34 bool
  35 copy(std::size_t start, std::size_t size, std::size_t stride)
  36 {
  37   std::slice s(start, size, stride);
  38   std::slice t = s;
  39   return t.start() == start && t.size() == size && t.stride() == stride;
  40 }
  41
  42 bool
  43 assignment(std::size_t start, std::size_t size, std::size_t stride)
  44 {
  45   std::slice s(start, size, stride);
  46   std::slice t;
  47   t = s;
  48   return t.start() == start && t.size() == size && t.stride() == stride;
  49 }
  50
  51
  52 int main()
  53 {
  54   bool test __attribute__((unused)) = true;
  55   std::srand(20020717);
  56   using std::rand;
  57   VERIFY(construction(rand(), rand(), rand()));
  58
  59   VERIFY(copy(rand(), rand(), rand()));
  60
  61   VERIFY(assignment(rand(), rand(), rand()));
  62
  63   return 0;
  64 }