FM / complex

/usr/include/boost/math/complex

Name	Size	Mode	Actions
acos.hpp	7614	0644	edit dl rm
acosh.hpp	1041	0644	edit dl rm
asin.hpp	7463	0644	edit dl rm
asinh.hpp	984	0644	edit dl rm
atan.hpp	1206	0644	edit dl rm
atanh.hpp	6103	0644	edit dl rm
details.hpp	2746	0644	edit dl rm
fabs.hpp	618	0644	edit dl rm

Edit: /usr/include/boost/math/complex/atan.hpp (1206B)

#ifndef BOOST_MATH_COMPLEX_ATAN_INCLUDED
#define BOOST_MATH_COMPLEX_ATAN_INCLUDED

#ifndef BOOST_MATH_COMPLEX_DETAILS_INCLUDED
#  include <boost/math/complex/details.hpp>
#endif
#ifndef BOOST_MATH_COMPLEX_ATANH_INCLUDED
#  include <boost/math/complex/atanh.hpp>
#endif

namespace boost{ namespace math{

template<class T> 
std::complex<T> atan(const std::complex<T>& x)
{
   //
   // We're using the C99 definition here; atan(z) = -i atanh(iz):
   //
   if(x.real() == 0)
   {
      if(x.imag() == 1)
         return std::complex<T>(0, std::numeric_limits<T>::has_infinity ? std::numeric_limits<T>::infinity() : static_cast<T>(HUGE_VAL));
      if(x.imag() == -1)
         return std::complex<T>(0, std::numeric_limits<T>::has_infinity ? -std::numeric_limits<T>::infinity() : -static_cast<T>(HUGE_VAL));
   }
   return ::boost::math::detail::mult_minus_i(::boost::math::atanh(::boost::math::detail::mult_i(x)));
}

} } // namespaces

#endif // BOOST_MATH_COMPLEX_ATAN_INCLUDED

// (C) Copyright John Maddock 2005. // Use, modification and distribution are subject to 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) #ifndef BOOST_MATH_COMPLEX_ATAN_INCLUDED #define BOOST_MATH_COMPLEX_ATAN_INCLUDED #ifndef BOOST_MATH_COMPLEX_DETAILS_INCLUDED # include #endif #ifndef BOOST_MATH_COMPLEX_ATANH_INCLUDED # include #endif namespace boost{ namespace math{ template std::complex atan(const std::complex& x) { // // We're using the C99 definition here; atan(z) = -i atanh(iz): // if(x.real() == 0) { if(x.imag() == 1) return std::complex(0, std::numeric_limits::has_infinity ? std::numeric_limits::infinity() : static_cast(HUGE_VAL)); if(x.imag() == -1) return std::complex(0, std::numeric_limits::has_infinity ? -std::numeric_limits::infinity() : -static_cast(HUGE_VAL)); } return ::boost::math::detail::mult_minus_i(::boost::math::atanh(::boost::math::detail::mult_i(x))); } } } // namespaces #endif // BOOST_MATH_COMPLEX_ATAN_INCLUDED