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-- FXA5A00.A
--
-- Grant of Unlimited Rights
--
-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
-- unlimited rights in the software and documentation contained herein.
-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
-- this public release, the Government intends to confer upon all
-- recipients unlimited rights equal to those held by the Government.
-- These rights include rights to use, duplicate, release or disclose the
-- released technical data and computer software in whole or in part, in
-- any manner and for any purpose whatsoever, and to have or permit others
-- to do so.
--
-- DISCLAIMER
--
-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
-- PARTICULAR PURPOSE OF SAID MATERIAL.
--*
--
-- FOUNDATION DESCRIPTION:
-- This foundation package contains constants and a function used in
-- the evaluation of the Generic Elementary Functions.
--
-- CHANGE HISTORY:
-- 06 Mar 95 SAIC Initial prerelease version.
-- 03 Apr 95 SAIC Corrected error in context clause.
-- 12 Jun 95 SAIC Added procedure Dont_Optimize. Added New_Float
-- type, and overload of function
-- Result_Within_Range.
--
--!
with Ada.Numerics;
with Report;
package FXA5A00 is
-- Constants.
Epsilon : constant Float := Float'Model_Epsilon;
Small : constant Float := Float'Model_Small;
Large : constant Float := Float'Safe_Last;
Minus_Large : constant Float := Float'Safe_First;
Half_Pi : constant Float := Ada.Numerics.Pi / 2.0;
Two_Pi : constant Float := Ada.Numerics.Pi * 2.0;
Floating_Delta : constant Float := 0.05;
One_Plus_Delta : constant Float := 1.0 + Floating_Delta;
One_Minus_Delta : constant Float := 1.0 - Floating_Delta;
Minus_One_Plus_Delta : constant Float := -1.0 + Floating_Delta;
Minus_One_Minus_Delta : constant Float := -1.0 - Floating_Delta;
type New_Float is new Float digits 6;
function Result_Within_Range (Result : Float;
Expected_Result : Float;
Relative_Error : Float) return Boolean;
function Result_Within_Range (Result : New_Float;
Expected_Result : Float;
Relative_Error : Float) return Boolean;
-- This procedure is designed to defeat optimization attempts by an
-- implementation in cases where an exception is specifically raised
-- in a test to test a prescribed exception result condition.
-- The parameter Num is a unique identifier for location purposes within
-- the test.
generic
type Eval_Type is digits <>;
procedure Dont_Optimize (Check_Result : Eval_Type;
Num : Integer);
end FXA5A00;
---
package body FXA5A00 is
function Result_Within_Range (Result : Float;
Expected_Result : Float;
Relative_Error : Float) return Boolean is
begin
return (Result <= Expected_Result + Relative_Error) and
(Result >= Expected_Result - Relative_Error);
end Result_Within_Range;
function Result_Within_Range (Result : New_Float;
Expected_Result : Float;
Relative_Error : Float) return Boolean is
begin
return (Float(Result) <= Expected_Result + Relative_Error) and
(Float(Result) >= Expected_Result - Relative_Error);
end Result_Within_Range;
procedure Dont_Optimize (Check_Result : Eval_Type;
Num : Integer) is
begin
-- Note that the use of Minus_Large here is simply as a "dummy" value,
-- designed to indicate use of the Check_Result parameter, and has no
-- pass/fail significance to any test using this procedure.
--
if Float(Check_Result) = Minus_Large then
Report.Comment("Attempted Defeat of Optimization ONLY -- Not " &
"a cause for test failure! " &
"Result = Minus_Large, Case:" & Integer'Image(Num));
end if;
end Dont_Optimize;
end FXA5A00;
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