Re: error C2668: 'abs' : ambiguous call to overloaded function

From: Black Ice (yg-boost-users_at_[hidden])
Date: 2003-01-04 01:36:42

Detail error message:
d:\boost\boost\boost\date_time\time_duration.hpp(66) : error C2668: 'abs' :
ambiguous call to overloaded function
        d:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\include\math.h(528): could be 'long abs(long)'
        d:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\include\math.h(530): or       'double abs(double)'
        d:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\include\math.h(536): or       'float abs(float)'
        d:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\include\math.h(584): or       'long double abs(long double)'
        d:\Program Files\Microsoft Visual Studio .NET
2003\Vc7\include\stdlib.h(265): or       'int abs(int)'
        while trying to match the argument list
'(boost::date_time::time_resolution_traits<frac_sec_type,res,resolution_adju
st,frac_digits>::fractional_seconds_type)'
        with
        [
            frac_sec_type=boost::int64_t,
            res=nano,
            resolution_adjust=0x03b9aca00,
            frac_digits=9
        ]

--
/*******************/
自由（liberty）无非就是这样一种承诺：每个人将会得到一种保障，保障我们可以与
权威、多数、流俗及舆论的影响相抗衡。
/*******************/
"Black Ice" <yg-boost-users_at_[hidden]> 写入消息新闻
:av5tpc$fmj$1_at_main.gmane.org...
> After I move the line 'using std namespace', the error still occurs.
> The error occurs in file date_time/time_duration.hpp, line 66.
>     min_type minutes() const
>     {
>       return std::abs(((ticks() / (60*rep_type::res_adjust())) % 60));
>     }
>
>
>
>
> --
> /*******************/
> 自由（liberty）无非就是这样一种承诺：每个人将会得到一种保障，保障我们可以
与
> 权威、多数、流俗及舆论的影响相抗衡。
> /*******************/
>
>
> "Black Ice" <yg-boost-users_at_[hidden]> 写入消息新闻
> :av2tmo$42o$1_at_main.gmane.org...
> > boost version 2002-01-02
> > VC 7.1 Final Beta
> > "error C2668: 'abs' : ambiguous call to overloaded function" when
compile
> > following code. The same code can be built successfully in vc6.
> > Any suggestion are appreciated.
> >
> > #define DATE_TIME_INLINE
> > #define BOOST_DATE_TIME_POSIX_TIME_STD_CONFIG
> >
> > #include <iostream>
> > #include <string>
> > using namespace std;
> >
> > #include <boost/date_time/gregorian/gregorian.hpp>
> > #include <boost/date_time/posix_time/posix_time.hpp>
> >
> > using namespace boost::gregorian;
> > using namespace boost::posix_time;
> >
> > void testDateTime2()
> > {
> >  date d(2002, Nov, 1); //an arbitrary date
> >  ptime t1(d, hours(5) + nanosec(100));//date + time of day offset
> >  ptime t2 = t1 - minutes(4)+seconds(2);
> >  ptime now = second_clock::local_time(); //use the clock
> >  //Get the date part out of the time
> >  date today = now.date();
> >  date tommorrow = today + date_duration(1);
> >  ptime tommorrow_start(tommorrow); //midnight
> >
> >  cout << "d is " << to_iso_extended_string(d) << endl;
> >  cout << "t1 is " << to_iso_extended_string(t1) << endl;
> >  cout << "t2 is " << to_iso_extended_string(t2) << endl;
> >  cout << "now is " << to_iso_extended_string(now) << endl;
> >  cout << "today is " << to_iso_extended_string(today) << endl;
> >  cout << "tommorrow is " << to_iso_extended_string(tommorrow) << endl;
> >  cout << "tommorrow_start is " <<
to_iso_extended_string(tommorrow_start)
> <<
> > endl;
> >
> >  //starting at current time iterator adds by one hour
> >  time_iterator titr(now,hours(1));
> >  for (; titr < tommorrow_start; ++titr) {
> >   cout << to_iso_extended_string(*titr) << endl;
> >  }
> > }
> >
> >
> > --
> > /*******************/
> > 自由（liberty）无非就是这样一种承诺：每个人将会得到一种保障，保障我们可
以
> 与
> > 权威、多数、流俗及舆论的影响相抗衡。
> > /*******************/
> >
> >
> >
> >
> >
> >
> >
> > Info: <http://www.boost.org>
> > Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl>
> > Unsubscribe: <mailto:boost-users-unsubscribe_at_[hidden]>
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
>
>
>
>
>
>
>
> Info: <http://www.boost.org>
> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl>
> Unsubscribe: <mailto:boost-users-unsubscribe_at_[hidden]>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>