Added boost header

test/external/boost/math/complex/asinh.hpp

@@ -0,0 +1,32 @@
+//  (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_ASINH_INCLUDED
+#define BOOST_MATH_COMPLEX_ASINH_INCLUDED
+
+#ifndef BOOST_MATH_COMPLEX_DETAILS_INCLUDED
+#  include <boost/math/complex/details.hpp>
+#endif
+#ifndef BOOST_MATH_COMPLEX_ASIN_INCLUDED
+#  include <boost/math/complex/asin.hpp>
+#endif
+
+namespace boost{ namespace math{
+
+template<class T> 
+inline std::complex<T> asinh(const std::complex<T>& x)
+{
+   //
+   // We use asinh(z) = i asin(-i z);
+   // Note that C99 defines this the other way around (which is
+   // to say asin is specified in terms of asinh), this is consistent
+   // with C99 though:
+   //
+   return ::boost::math::detail::mult_i(::boost::math::asin(::boost::math::detail::mult_minus_i(x)));
+}
+
+} } // namespaces
+
+#endif // BOOST_MATH_COMPLEX_ASINH_INCLUDED