[Olena-patches] 3144: Add from_double_to_value dispatch in from_to.

* mln/convert/from_to.hxx: add more forward declarations. * mln/convert/impl/all.hh: include from_double_to_value.hh. * mln/convert/impl/from_double_to_value.hh: new file. Add a new dispatch for double conversion. --- milena/ChangeLog | 11 ++ milena/mln/convert/from_to.hxx | 13 ++ milena/mln/convert/impl/all.hh | 1 + milena/mln/convert/impl/from_double_to_value.hh | 157 +++++++++++++++++++++++ 4 files changed, 182 insertions(+), 0 deletions(-) create mode 100644 milena/mln/convert/impl/from_double_to_value.hh diff --git a/milena/ChangeLog b/milena/ChangeLog index 2a5fb87..6364251 100644 --- a/milena/ChangeLog +++ b/milena/ChangeLog @@ -1,5 +1,16 @@ 2009-01-09 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + Add from_double_to_value dispatch in from_to. + + * mln/convert/from_to.hxx: add more forward declarations. + + * mln/convert/impl/all.hh: include from_double_to_value.hh. + + * mln/convert/impl/from_double_to_value.hh: new file. Add a new + dispatch for double conversion. + +2009-01-09 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + Remove a useless test in level/median. * tests/level/Makefile.am, diff --git a/milena/mln/convert/from_to.hxx b/milena/mln/convert/from_to.hxx index 793da8b..e2cbe3d 100644 --- a/milena/mln/convert/from_to.hxx +++ b/milena/mln/convert/from_to.hxx @@ -194,6 +194,19 @@ namespace mln void from_to_(const Value<F>& from, Value<T>& to); + // double-> Value + template <typename V> + void + from_to_(const double& from, Value<V>& to); + + // double-> unsigned + void + from_to_(const double& from, unsigned& to); + + // double-> int + void + from_to_(const double& from, int& to); + // float -> Value template <typename V> void diff --git a/milena/mln/convert/impl/all.hh b/milena/mln/convert/impl/all.hh index a7ef79b..1a33732 100644 --- a/milena/mln/convert/impl/all.hh +++ b/milena/mln/convert/impl/all.hh @@ -33,6 +33,7 @@ /// File that includes all from-to conversion routines. +# include <mln/convert/impl/from_double_to_value.hh> # include <mln/convert/impl/from_float_to_value.hh> # include <mln/convert/impl/from_image_to_site_set.hh> # include <mln/convert/impl/from_int_to_value.hh> diff --git a/milena/mln/convert/impl/from_double_to_value.hh b/milena/mln/convert/impl/from_double_to_value.hh new file mode 100644 index 0000000..fc1d23e --- /dev/null +++ b/milena/mln/convert/impl/from_double_to_value.hh @@ -0,0 +1,157 @@ +// Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE) +// +// 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_CONVERT_IMPL_FROM_DOUBLE_TO_VALUE_HH +# define MLN_CONVERT_IMPL_FROM_DOUBLE_TO_VALUE_HH + +/// \file mln/convert/impl/from_double_to_value.hh +/// +/// General conversion procedure from a double to a value. +/// +/// \todo Augment code + add checks. + +# include <utility> +# include <mln/value/concept/integer.hh> +# include <mln/value/concept/floating.hh> +# include <mln/core/concept/value.hh> +# include <mln/math/round.hh> + + + + +namespace mln +{ + + namespace convert + { + + /// Conversion of a double \p from towards a value \p to. + template <typename V> + void + from_to(const double& from, Value<V>& to); + + +# ifndef MLN_INCLUDE_ONLY + + namespace impl + { + + // Case 1: + + template <typename V> + inline + void + from_double_to_value(const double& from, + mln::value::Integer<V>& to) + { + exact(to) = math::round<V>()(from); + } + + // Case 2: + + template <typename V> + inline + void + from_double_to_value(const double& from, + mln::value::Floating<V>& to) + { + exact(to) = from; + } + + + // Default: no conversion defined. + + template <typename V> + inline + void + from_double_to_value(const double& from, + Value<V>& to) + { + mlc_abort(V)::check(); + } + + } // end of namespace mln::convert::impl + + + namespace internal + { + + template <typename V> + inline + void + from_double_to_value_dispatch(const double& from, Value<V>& to) + { + impl::from_double_to_value(from, exact(to)); + } + + } // end of namespace mln::convert::internal + + + namespace over_load + { + + // Facades. + + + // double-> Value + template <typename V> + inline + void + from_to_(const double& from, Value<V>& to) + { + internal::from_double_to_value_dispatch(from, to); + } + + // double-> unsigned + inline + void + from_to_(const double& from, + unsigned& to) + { + mln_precondition(from >= 0); + to = math::round<unsigned>()(from); + } + + // double-> int + inline + void + from_to_(const double& from, + int& to) + { + to = math::round<int>()(from); + } + + } // end of namespace mln::convert::over_load + +# endif // ! MLN_INCLUDE_ONLY + + } // end of namespace mln::convert + +} // end of namespace mln + + +#endif // ! MLN_CONVERT_IMPL_FROM_DOUBLE_TO_VALUE_HH -- 1.5.6.5