ChangeLog | 10 ++++++ oln/level/arith.hh | 34 ++++++++++++++++++++ tests/level/tests/arith_and_conversion | 55 +++++++++++++++++++++++++++++++++ 3 files changed, 99 insertions(+) Index: olena/ChangeLog from Roland Levillain <roland@lrde.epita.fr> Add level::minus taking a conversion function. * oln/level/arith.hh (minus (const convert::abstract::conversion<C, B>&, const abstract::image<I1>&, const abstract::image<I2>& input2)): New. * tests/level/tests/arith_and_conversion: New test. 2005-06-23 Roland Levillain <roland@lrde.epita.fr> Index: olena/oln/level/arith.hh --- olena/oln/level/arith.hh (révision 216) +++ olena/oln/level/arith.hh (copie de travail) @@ -35,6 +35,7 @@ # include <oln/core/apply.hh> # include <oln/ops/arith.hh> +# include <oln/convert/conversion.hh> # include <oln/utils/clone.hh> @@ -169,6 +170,39 @@ return output; } + // Variant taking a conversion function in parameter. + template <typename C, typename B, typename I1, typename I2> + typename ch_value_type<I1, typename convoutput<C, B, typename arith_output<f_::minus_, I1, I2>::T>::ret>::ret + minus (const convert::abstract::conversion<C, B>& conv, + const abstract::image<I1>& input1, + const abstract::image<I2>& input2) + { + mlc::eq<oln_type_of(I1, grid), oln_type_of(I2, grid)>::ensure(); + + entering("level::minus"); + registering(input1, "input1"); + registering(input2, "input2"); + + precondition(input1.size() == input2.size()); + + typedef oln_type_of(I1, value) T1; + typedef oln_type_of(I2, value) T2; + + // The return type, if there were no conversion. + typedef typename arith_output<f_::minus_, I1, I2>::T oper_output_type; + // The actual return type. + typedef typename + ch_value_type<I1, + typename convoutput<C, B, oper_output_type>::ret>::ret + output_type; + output_type output("output"); + output = apply2(convert::compconv2(conv, f_::minus_<T1, T2>()), + input1, input2); + + exiting("level::minus"); + return output; + } + // times Index: olena/tests/level/tests/arith_and_conversion --- olena/tests/level/tests/arith_and_conversion (révision 0) +++ olena/tests/level/tests/arith_and_conversion (révision 0) @@ -0,0 +1,55 @@ + // -*- C++ -*- +#include <ntg/int.hh> +#include <oln/basics2d.hh> +#include <oln/convert/force.hh> +#include <oln/level/arith.hh> +#include <oln/level/fill.hh> +#include <oln/level/compare.hh> + +using namespace oln; + + +// FIXME: Not safe, nor generic. Re-introduce static initialization +// in Olena and use it instead. +template<typename T> +image2d<T> +image_from_array(coord_t nrows, coord_t ncols, T values[]) +{ + image2d<T> output(nrows, ncols); + unsigned i = 0; + oln_type_of(image2d<T>, fwd_piter) p(output.size()); + for_all_p (p) + { + output[p] = values[i]; + ++i; + } + return output; +} + + +bool check() +{ + typedef ntg::int_u8 value_type; + + value_type ima1_values[] = { 2, 8, 2, + 3, 4, 5, + 6, 7, 8 }; + image2d<value_type> ima1 = image_from_array<value_type>(3, 3, ima1_values); + + image2d<value_type> ima2(3, 3); + level::fill(ima2, 2); + + // Checking level::minus, with convert::force conversion. + { + image2d<value_type> diff = + level::minus(convert::force<value_type>(), ima1, ima2); + value_type diff_ref[] = { 0, 6, 0, + 1, 2, 3, + 4, 5, 6 }; + if (not level::is_equal(diff, + image_from_array<value_type>(3, 3, diff_ref))) + return true; + } + + return false; +}