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