function_ptr.cpp

来自「Boost provides free peer-reviewed portab」· C++ 代码 · 共 20 行

// Copyright (C) 2006 Arkadiy Vertleyb
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)

#include "test.hpp"

BOOST_STATIC_ASSERT(boost::type_of::test<double(*)()>::value);
BOOST_STATIC_ASSERT(boost::type_of::test<double(*)(int, double, short, char*, bool, char, float, long, unsigned short)>::value);
BOOST_STATIC_ASSERT(boost::type_of::test<void(*)()>::value);
BOOST_STATIC_ASSERT(boost::type_of::test<void(*)(int, double, short, char*, bool, char, float, long, unsigned short)>::value);

// check that const gets stripped from function pointer

int foo(double);
typedef int(*PTR)(double);
typedef const PTR CPTR;
CPTR cptr = foo;

BOOST_STATIC_ASSERT((boost::is_same<BOOST_TYPEOF(cptr), PTR>::value));