libcxx/test/input.output/iostreams.base/fpos/fpos.operations/subtraction.pass.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <ios>

// template <class StateT> class fpos

// Subraction with offset

#include <ios>
#include <cassert>

int main()
{
    typedef std::fpos<std::mbstate_t> P;
    P p(11);
    std::streamoff o(6);
    P q = p - o;
    assert(q == P(5));
    p -= o;
    assert(p == q);
}