gcc/testsuite/ada/acats/support/impdefg.a

   1 -- IMPDEFG.A
   2 --
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 --
  26 -- DESCRIPTION:
  27 --     This package provides tailorable entities for a particular
  28 --     implementation.  Each entity may be modified to suit the needs
  29 --     of the implementation.  Default values are provided to act as
  30 --     a guide.
  31 --
  32 --     The entities in this package are those which are used exclusively
  33 --     in tests for Annex G (Numerics).
  34 --
  35 -- APPLICABILITY CRITERIA:
  36 --     This package is only required for implementations validating the
  37 --     Numerics Annex.
  38 --
  39 -- CHANGE HISTORY:
  40 --     29 Jan 96   SAIC    Initial version for ACVC 2.1.
  41 --
  42 --!
  43
  44 package ImpDef.Annex_G is
  45
  46 --=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====--
  47
  48    -- This function must return a "negative zero" value for implementations
  49    -- for which Float'Signed_Zeros is True.
  50
  51    function Negative_Zero return Float;
  52
  53 --=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====--
  54
  55 end ImpDef.Annex_G;
  56
  57
  58      --==================================================================--
  59
  60
  61 package body ImpDef.Annex_G is
  62
  63    -- NOTE: These are example bodies.  It is expected that implementors
  64    --       will write their own versions of these routines.
  65
  66 --=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====--
  67
  68    -- This function must return a negative zero value for implementations
  69    -- for which Float'Signed_Zeros is True.
  70    --
  71    -- The default body simply returns a negated literal 0.0.  If the
  72    -- default body does not return the value corresponding to a negatively
  73    -- signed zero for the implementation under test, it must be replaced
  74    -- by one which does.  See RM A.5.3(13).
  75
  76    function Negative_Zero return Float is
  77    begin
  78       return -0.0;      -- Note: If this value is not negative zero for the
  79                         --       implementation, use of this "default" value
  80                         --       could result in false failures in
  81                         --       implementations where Float'Signed_Zeros
  82                         --       is True.
  83
  84    -- ^^^^^^^^^^^^^^^^^^^^  MODIFY THIS BODY AS NEEDED  ^^^^^^^^^^^^^^^^^^^^
  85
  86    end Negative_Zero;
  87
  88 --=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====-=====--
  89
  90 end ImpDef.Annex_G;