-- This file is part of SmartEiffel The GNU Eiffel Compiler Tools and Libraries.
-- See the Copyright notice at the end of this file.
--
class TEST_IS_ZERO
   --
   -- Of REAL_GENERAL.
   --

insert
   EIFFELTEST_TOOLS

create {}
   make

feature {ANY}
   make
      local
         real_32: REAL_32; real_64: REAL_64; real_extended: REAL_EXTENDED
      do
         assert(real_64.is_zero)
         real_64 := -real_64
         assert(real_64.is_zero)
         assert(infinity_64.is_infinity)
         real_64 := 2.0 / infinity_64
         assert(real_64.is_zero)
         assert(real_32.is_zero)
         real_32 := -real_32
         assert(real_32.is_zero)
         assert(infinity_32.is_infinity)
         real_32 := {REAL_32 2.0} / infinity_32
         assert(real_32.is_zero)
         assert(real_extended.is_zero)
         real_extended := -real_extended
         assert(real_extended.is_zero)
         assert(infinity_extended.is_infinity)
         real_extended := {REAL_EXTENDED 2.0} / infinity_extended
         assert(real_extended.is_zero)
      end

   infinity_64: REAL_64
      do
         Result := infinity_32
      end

   infinity_32: REAL_32
      local
         x, y: REAL_32
      do
         x := {REAL_32 1.0}
         Result := unchecked_c_divide(x, y)
      end

   infinity_extended: REAL_EXTENDED
      do
         Result := infinity_32
      end

   unchecked_c_divide (x, y: REAL_32): REAL_32
      external "C inline"
      alias "($x/$y)"
      end
   
end -- class TEST_IS_ZERO
--
-- ------------------------------------------------------------------------------------------------------------------------------
-- Copyright notice below. Please read.
--
-- SmartEiffel is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License,
-- as published by the Free Software Foundation; either version 2, or (at your option) any later version.
-- SmartEiffel 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 SmartEiffel; see the file COPYING. If not, write to the Free
-- Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
--
-- Copyright(C) 1994-2002: INRIA - LORIA (INRIA Lorraine) - ESIAL U.H.P.       - University of Nancy 1 - FRANCE
-- Copyright(C) 2003-2006: INRIA - LORIA (INRIA Lorraine) - I.U.T. Charlemagne - University of Nancy 2 - FRANCE
--
-- Authors: Dominique COLNET, Philippe RIBET, Cyril ADRIAN, Vincent CROIZIER, Frederic MERIZEN
--
-- http://SmartEiffel.loria.fr - SmartEiffel@loria.fr
-- ------------------------------------------------------------------------------------------------------------------------------