小编Adr*_*anu的帖子

我试图获得一个大数字的日志。我该怎么做？我不能使用 gmp.hpp 因为它说Cannot open include file: 'gmp.h': No such file or directory

以下代码

#include <iostream>
#include <boost/multiprecision/cpp_int.hpp>

#define rsa100 "1522605027922533360535618378132637429718068114961380688657908494580122963258952897654000350692006139"


using namespace std;
using namespace boost::multiprecision;

int main(){
    cpp_int n(rsa100);
    cout << boost::multiprecision::log(n);
    return 0;
}

给我错误：

1>------ Build started: Project: rsa, Configuration: Debug x64 ------
1>  Source.cpp
1>Source.cpp(12): error C2893: Failed to specialize function template 'enable_if_c<boost::multiprecision::number_category<Num>::value==1,boost::multiprecision::detail::expression<boost::multiprecision::detail::function,boost::multiprecision::detail::log_funct<Backend>,boost::multiprecision::number<B,et_on>,void,void>>::type boost::multiprecision::log(const boost::multiprecision::number<B,et_on> &)'
1>          With the following template arguments:
1>          'Backend=boost::multiprecision::backends::cpp_int_backend<0,0,signed_magnitude,unchecked,std::allocator<boost::multiprecision::limb_type>>'
1>Source.cpp(12): error C2784: 'enable_if_c<boost::multiprecision::number_category<boost::multiprecision::detail::expression<tag,Arg1,Arg2,Arg3,Arg4>>::value==number_kind_floating_point,boost::multiprecision::detail::expression<boost::multiprecision::detail::function,boost::multiprecision::detail::log_funct<detail::backend_type<boost::multiprecision::detail::expression<tag,Arg1,Arg2,Arg3,Arg4>>::type>,boost::multiprecision::detail::expression<tag,Arg1,Arg2,Arg3,Arg4>,void,void>>::type boost::multiprecision::log(const boost::multiprecision::detail::expression<tag,Arg1,Arg2,Arg3,Arg4> &)' : could not deduce …

以下是在msvc上编译而不是在gcc上编译.为什么？

game_tracker.cpp:

#include "stdafx.hpp"
#include "game_tracker.hpp"
#include "basic_game_server.hpp"
#include "basic_session.hpp"
#include "api_session.hpp"
#include "protocols.hpp"

using namespace boost::asio;
using namespace std;

namespace games_zone{

    game_tracker::game_tracker(unsigned short port) : tracker_(io_service(thread::hardware_concurrency())),
        api_(io_service(thread::hardware_concurrency())),
        acceptor_(api_, ip::tcp::endpoint(ip::tcp::v4(), port), false),
        socket_(api_)
    {
        tracker_work_ = new boost::asio::io_service::work(tracker_);
        api_work_ = new boost::asio::io_service::work(api_);

        protocols::hl_game_server gs(boost::asio::ip::address_v4::from_string("89.44.246.184"), 27015);
        add(gs);
    }

    ...
}

game_tracker.hpp:

#pragma once

#include "basic_game_server.hpp"

namespace games_zone{
    class game_tracker :
        private boost::noncopyable
    {
    public:
        game_tracker(unsigned short);
        ~game_tracker();
        void run();
    private:
        boost::asio::io_service tracker_;
        boost::asio::io_service api_;
        boost::asio::ip::tcp::acceptor acceptor_;
        boost::asio::ip::tcp::socket socket_;
        boost::asio::io_service::work* tracker_work_;
        boost::asio::io_service::work* …