104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
// 1999-09-20 bkoz
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// Copyright (C) 1999, 2001, 2003 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// 27.4.3 template class fpos
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#include <cwchar> // for mbstate_t
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#include <ios>
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#include <testsuite_hooks.h>
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// 27.4.3.2 fpos requirements/invariants
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void test02()
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{
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bool test = true;
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typedef std::mbstate_t state_type;
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state_type state01;
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state_type state02;
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std::streamoff off01;
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std::streamoff off02 = 997;
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int i01 = 0;
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int i02 = 999;
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// p(i), p = i
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std::streampos pos01(i02);
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std::streampos pos02 = i02;
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VERIFY( pos01 == pos02 );
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// p(o), p = o
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// NB: P(o) is only required.
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std::streampos pos03(off02);
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std::streampos pos04 = off02;
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VERIFY( pos03 == pos04 );
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// O(p)
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std::streamoff off03(pos04);
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VERIFY( off03 == off02 );
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// p == q, p!= q
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VERIFY( pos01 == pos02 );
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VERIFY( pos02 != pos03 );
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// q = p + o
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// p += o
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pos03 = pos03 + off02;
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pos04 += off02;
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VERIFY( pos03 == pos04 );
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std::streampos pos05 = pos03;
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std::streampos pos06 = pos03 + off02;
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VERIFY ( pos05 == pos03 );
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// q = p - o
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// p -= o
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pos03 = pos03 - off02;
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pos04 -= off02;
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VERIFY( pos03 == pos04 );
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std::streampos pos07 = pos03;
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std::streampos pos08 = pos03 - off02;
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VERIFY ( pos07 == pos03 );
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// o = p - q
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VERIFY( 0 == pos03 - pos04 );
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// streamsize -> streamoff
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// streamoff -> streamsize
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off01 = off02;
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std::streamsize size01(off02);
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std::streamoff off04(size01);
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VERIFY( off01 == off04 );
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}
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int main()
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{
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test02();
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return 0;
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}
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