eagine/limit_cast.cpp

Copyright Matus Chochlik. Distributed under the Boost Software License, Version 1.0. See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt

#include <eagine/is_within_limits.hpp>
#include <iostream>
 
static inline void foo(short s) {
    std::cout << s << std::endl;
}
 
auto main() -> int {
    using namespace eagine;
 
    // would assert if 123 didn't fit into short
    foo(limit_cast<short>(123));
 
    if(auto converted = convert_if_fits<short>(12345)) {
        std::cout << extract(converted) << std::endl;
    }
 
    if(auto converted = convert_if_fits<short>(123456)) {
        std::cout << extract(converted) << std::endl;
    } else {
        std::cout << "value too big" << std::endl;
    }
 
    return 0;
}