c++ - boost 区间算术和三角函数

我有一个与这里可用的问题（和答案）有关的问题：
C++ Boost Interval and cos
我也在尝试使用区间算术来计算三角函数，而且我面临的问题与上述问题的作者提出的问题类似。我尝试使用上面链接的问题的答案，并产生了下面的代码。但是它不能编译。这是代码：

#include <boost/numeric/interval.hpp>
using namespace boost::numeric;
using namespace interval_lib;
typedef interval<double, policies<save_state<rounded_transc_std<double> >, checking_base<double> >   > Interval;
int main()
{
    Interval i1(1.0, 2.0);
    Interval i2 = cos(i1);
    return 0;
}

我收到的错误如下：

In file included from /usr/include/boost/numeric/interval/hw_rounding.hpp:15:0,
         from /usr/include/boost/numeric/interval.hpp:18,
         from interval_test.cpp:34:
/usr/include/boost/numeric/interval/rounded_arith.hpp: In instantiation of ‘T boost::numeric::interval_lib::rounded_arith_std<T,        Rounding>::int_down(const T&) [with T = double; Rounding =        boost::numeric::interval_lib::rounding_control<double>]’:
/usr/include/boost/numeric/interval/arith2.hpp:40:49:   required from       ‘boost::numeric::interval<T, Policies> boost::numeric::fmod(const       boost::numeric::interval<T, Policies>&, const boost::numeric::interval<T,       Policies>&) [with T = double; Policies =         boost::numeric::interval_lib::policies<boost::numeric::interval_lib::detal ::save_state_unprotected<boost::numeric::interval_lib::rounded_transc_std     <double> >, boost::numeric::interval_lib::checking_base<double> >]’
/usr/include/boost/numeric/interval/transc.hpp:62:32:   required from     ‘boost::numeric::interval<T, Policies> boost::numeric::cos(const       boost::numeric::interval<T, Policies>&) [with T = double; Policies =       boost::numeric::interval_lib::policies<boost::numeric::interval_lib::save_    state<boost::numeric::interval_lib::rounded_transc_std<double> >,            boost::numeric::interval_lib::checking_base<double> >]’
interval_test.cpp:44:25:   required from here
/usr/include/boost/numeric/interval/rounded_arith.hpp:71:61: error:        ‘to_int’ was not declared in this scope, and no declarations were found by         argument-dependent lookup at the point of instantiation [-fpermissive]
 T int_down(const T& x) { this->downward(); return to_int(x); }
                                                     ^
/usr/include/boost/numeric/interval/rounded_arith.hpp:71:61: note:    declarations in dependent base    ‘boost::numeric::interval_lib::detail::c99_rounding_control’ are not found    by unqualified lookup
/usr/include/boost/numeric/interval/rounded_arith.hpp:71:61: note: use ‘this->to_int’ instead

我正在使用boost 1.54.0和gcc 4.8.4。
你知道我在做什么错吗？

非常感谢你的帮助。

最佳答案

此问题已在2014/2015年修复：请参见https://github.com/boostorg/interval/pull/1

Boost 1.58中提供了此修复程序，因此您必须将Boost版本至少升级到1.58。

关于c++ - boost 区间算术和三角函数，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39355906/