1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/stdapis/boost/math/complex/atan.hpp Tue Mar 16 16:12:26 2010 +0000
1.3 @@ -0,0 +1,36 @@
1.4 +// (C) Copyright John Maddock 2005.
1.5 +// Use, modification and distribution are subject to the
1.6 +// Boost Software License, Version 1.0. (See accompanying file
1.7 +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
1.8 +
1.9 +#ifndef BOOST_MATH_COMPLEX_ATAN_INCLUDED
1.10 +#define BOOST_MATH_COMPLEX_ATAN_INCLUDED
1.11 +
1.12 +#ifndef BOOST_MATH_COMPLEX_DETAILS_INCLUDED
1.13 +# include <boost/math/complex/details.hpp>
1.14 +#endif
1.15 +#ifndef BOOST_MATH_COMPLEX_ATANH_INCLUDED
1.16 +# include <boost/math/complex/atanh.hpp>
1.17 +#endif
1.18 +
1.19 +namespace boost{ namespace math{
1.20 +
1.21 +template<class T>
1.22 +std::complex<T> atan(const std::complex<T>& x)
1.23 +{
1.24 + //
1.25 + // We're using the C99 definition here; atan(z) = -i atanh(iz):
1.26 + //
1.27 + if(x.real() == 0)
1.28 + {
1.29 + if(x.imag() == 1)
1.30 + return std::complex<T>(0, std::numeric_limits<T>::has_infinity ? std::numeric_limits<T>::infinity() : static_cast<T>(HUGE_VAL));
1.31 + if(x.imag() == -1)
1.32 + return std::complex<T>(0, std::numeric_limits<T>::has_infinity ? -std::numeric_limits<T>::infinity() : -static_cast<T>(HUGE_VAL));
1.33 + }
1.34 + return ::boost::math::detail::mult_minus_i(::boost::math::atanh(::boost::math::detail::mult_i(x)));
1.35 +}
1.36 +
1.37 +} } // namespaces
1.38 +
1.39 +#endif // BOOST_MATH_COMPLEX_ATAN_INCLUDED