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// 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> // // Copyright (C) 2005, 2009 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. // 3.7.2 polymorphic function object wrapper #include <tr1/functional> #include <testsuite_hooks.h> #include <testsuite_tr1.h> using namespace __gnu_test; bool test __attribute__((unused)) = true; // Put function objects into function<> wrappers void test04() { using std::tr1::function; do_truncate_float_t truncate_float; function<int(float)> f1(truncate_float); VERIFY( f1 ); VERIFY( !!f1 ); VERIFY( !(f1 == 0) ); VERIFY( !(0 == f1) ); VERIFY( f1 != 0 ); VERIFY( 0 != f1 ); // Copy-construction function<int(float)> f2(f1); VERIFY( f2 ); // Invocation VERIFY( f1(3.1f) == 3 ); VERIFY( f2(3.1f) == 3 ); // Assignment to zero f1 = 0; VERIFY( !f1 ); // Swap f1.swap(f2); VERIFY( f1 ); VERIFY( !f2 ); VERIFY( f1(3.1f) == 3 ); // Assignment from a function pointer f2 = do_truncate_float_t(); VERIFY( f2(3.1f) == 3 ); // target_type and target() functions const function<int(float)>& f1c = f1; VERIFY( typeid(do_truncate_float_t) == f1.target_type() ); VERIFY( f2.target<do_truncate_float_t>() != 0 ); VERIFY( f1c.target<do_truncate_float_t>() != 0 ); } int main() { test04(); VERIFY( do_truncate_double_t::live_objects == 0 ); VERIFY( do_truncate_float_t::live_objects == 0 ); return 0; }