3 // Copyright (C) 1999 Free Software Foundation, Inc.
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)
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.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
30 // 27.4.3 template class fpos
32 #include <cwchar> // for mbstate_t
34 #include <debug_assert.h>
40 typedef std::mbstate_t state_type;
50 std::streamsize size01;
51 std::streamsize size02;
53 // 27.4.3.1 fpos members
54 // void state(state_type s);
55 // state_type state();
57 // XXX Need to have some sanity checking for the mbstate_t type, or
58 // whatever the insantiating type for class fpos happens to be for
59 // streampos, as things like equality operators and assignment
60 // operators, increment and deincrement operators need to be in place.
62 state01 = pos01.state();
63 VERIFY( state01 == state02 );
71 // 27.4.3.2 fpos requirements/invariants
76 typedef std::mbstate_t state_type;
81 std::streamoff off02 = 997;
87 std::streampos pos01(i02);
88 std::streampos pos02 = i02;
89 VERIFY( pos01 == pos02 );
92 // NB: P(o) is only required.
93 std::streampos pos03(off02);
94 std::streampos pos04 = off02;
95 VERIFY( pos03 == pos04 );
98 std::streamoff off03(pos04);
99 VERIFY( off03 == off02 );
102 VERIFY( pos01 == pos02 );
103 VERIFY( pos02 != pos03 );
107 pos03 = pos03 + off02;
109 VERIFY( pos03 == pos04 );
113 pos03 = pos03 - off02;
115 VERIFY( pos03 == pos04 );
118 VERIFY( 0 == pos03 - pos04 );
120 // streamsize -> streamoff
121 // streamoff -> streamsize
123 std::streamsize size01(off02);
124 std::streamoff off04(size01);
125 VERIFY( off01 == off04 );
136 typedef std::mbstate_t state_type;
140 std::streamoff off01;
141 std::streamoff off02 = 997;
146 // casts to const streamoff
147 // (yes, I know this is weak code)
148 const std::streampos pos01 = 0;
151 // equality/inequality with const args
152 const std::streampos pos02(54);
153 std::streampos pos03(44);
154 VERIFY( !(pos03 == pos02) );
155 VERIFY( pos03 != pos02 );
156 VERIFY( !(pos02 == pos03) );
157 VERIFY( pos02 != pos03 );
160 std::streampos pos04;
161 VERIFY( (std::streamoff)pos04 == 0 );