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Diffstat (limited to 'libstdc++-v3/testsuite/20_util/function/2.cc')
-rw-r--r-- | libstdc++-v3/testsuite/20_util/function/2.cc | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/20_util/function/2.cc b/libstdc++-v3/testsuite/20_util/function/2.cc new file mode 100644 index 000000000..f2866d085 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/function/2.cc @@ -0,0 +1,78 @@ +// { dg-options "-std=gnu++0x" } +// 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/>. + +// 20.7.15 polymorphic function object wrapper +#include <functional> +#include <testsuite_hooks.h> +#include <testsuite_tr1.h> + +using namespace __gnu_test; + +bool test __attribute__((unused)) = true; + +// Put function pointers into function<> wrappers +void test02() +{ + using std::function; + + 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 = truncate_float; + VERIFY( f2(3.1f) == 3 ); + + // target_type and target() functions + const function<int(float)>& f1c = f1; + VERIFY( typeid(int(*)(float)) == f1.target_type() ); + VERIFY( f2.target<int(*)(float)>() != 0 ); + VERIFY( *f2.target<int(*)(float)>() == &truncate_float ); + VERIFY( f1c.target<int(*)(float)>() != 0 ); + VERIFY( *f1c.target<int(*)(float)>() == &truncate_float ); +} + +int main() +{ + test02(); + return 0; +} |