sl@0: //  (C) Copyright John Maddock 2005.
sl@0: //  Use, modification and distribution are subject to the
sl@0: //  Boost Software License, Version 1.0. (See accompanying file
sl@0: //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
sl@0: 
sl@0: #ifndef BOOST_MATH_COMPLEX_ASINH_INCLUDED
sl@0: #define BOOST_MATH_COMPLEX_ASINH_INCLUDED
sl@0: 
sl@0: #ifndef BOOST_MATH_COMPLEX_DETAILS_INCLUDED
sl@0: #  include <boost/math/complex/details.hpp>
sl@0: #endif
sl@0: #ifndef BOOST_MATH_COMPLEX_ASINH_INCLUDED
sl@0: #  include <boost/math/complex/asinh.hpp>
sl@0: #endif
sl@0: 
sl@0: namespace boost{ namespace math{
sl@0: 
sl@0: template<class T> 
sl@0: inline std::complex<T> asinh(const std::complex<T>& x)
sl@0: {
sl@0:    //
sl@0:    // We use asinh(z) = i asin(-i z);
sl@0:    // Note that C99 defines this the other way around (which is
sl@0:    // to say asin is specified in terms of asinh), this is consistent
sl@0:    // with C99 though:
sl@0:    //
sl@0:    return ::boost::math::detail::mult_i(::boost::math::asin(::boost::math::detail::mult_minus_i(x)));
sl@0: }
sl@0: 
sl@0: } } // namespaces
sl@0: 
sl@0: #endif // BOOST_MATH_COMPLEX_ASINH_INCLUDED