[Olena-patches] 1413: Add the (non-negative) square root function.

https://svn.lrde.epita.fr/svn/oln/trunk/milena Index: ChangeLog from Roland Levillain &lt;roland(a)lrde.epita.fr&gt; * mln/math/sqrt.hh: New. sqrt.hh | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) Index: mln/math/sqrt.hh --- mln/math/sqrt.hh (revision 0) +++ mln/math/sqrt.hh (revision 0) @@ -0,0 +1,64 @@ +// Copyright (C) 2007 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef MLN_MATH_SQRT_HH +# define MLN_MATH_SQRT_HH + +/*! \file mln/math/sqrt.hh + * + * \brief Define the (non-negative) square root (sqrt) routine. + */ + +# include <cmath> + + +namespace mln +{ + + namespace math + { + + template <typename T> + T sqrt(const T& v); + + +# ifndef MLN_INCLUDE_ONLY + + template <typename T> + T sqrt(const T& v) + { + return std::sqrt(v); + } + +# endif // ! MLN_INCLUDE_ONLY + + } // end of namespace mln::math + +} // end of namespace mln + + +#endif // ! MLN_MATH_SQRT_HH