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jeremybenn |
-- C460008.A
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--
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-- Grant of Unlimited Rights
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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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-- 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 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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-- 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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-- 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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-- to do so.
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--
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-- DISCLAIMER
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--
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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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-- 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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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- OBJECTIVE:
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-- Check that conversion to a modular type raises Constraint_Error
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-- when the operand value is outside the base range of the modular type.
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--
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-- TEST DESCRIPTION:
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-- Test conversion from integer, float, fixed and decimal types to
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-- modular types. Test conversion to mod 255, mod 256 and mod 258
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-- to test the boundaries of 8 bit (+/-) unsigned numbers.
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-- Test operand values that are negative, the value of the mod,
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-- and greater than the value of the mod.
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-- Declare a generic test procedure and instantiate it for each of the
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-- unsigned types for each operand type.
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--
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--
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-- CHANGE HISTORY:
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-- 04 OCT 95 SAIC Initial version
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-- 15 MAY 96 SAIC Revised for 2.1
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-- 24 NOV 98 RLB Moved decimal cases into new test, C460011, to
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-- prevent this test from being inapplicable to
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-- implementations not supporting decimal types.
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--
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--!
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------------------------------------------------------------------- C460008
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with Report;
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procedure C460008 is
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Shy_By_One : constant := 2**8-1;
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Heavy_By_Two : constant := 2**8+2;
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type Unsigned_Edge_8 is mod Shy_By_One;
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type Unsigned_8_Bit is mod 2**8;
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type Unsigned_Over_8 is mod Heavy_By_Two;
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NPC : constant String := " not properly converted";
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procedure Assert( Truth: Boolean; Message: String ) is
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begin
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if not Truth then
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Report.Failed(Message);
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end if;
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end Assert;
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-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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generic
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type Source is range <>;
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type Target is mod <>;
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procedure Integer_Conversion_Check( For_The_Value : Source;
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Message : String );
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procedure Integer_Conversion_Check( For_The_Value : Source;
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Message : String ) is
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Item : Target;
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begin
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Item := Target( For_The_Value );
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Report.Failed("Int expected Constraint_Error " & Message);
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-- the call to Comment is to make the otherwise dead assignment to
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-- Item live.
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-- To avoid invoking C_E on a call to 'Image in Report.Failed that
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-- could cause a false pass
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Report.Comment("Value of" & Target'Image(Item) & NPC);
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exception
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when Constraint_Error => null; -- expected case
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when others => Report.Failed("Int Raised wrong exception " & Message);
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end Integer_Conversion_Check;
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procedure Int_To_Short is
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new Integer_Conversion_Check( Integer, Unsigned_Edge_8 );
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procedure Int_To_Eight is
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new Integer_Conversion_Check( Integer, Unsigned_8_Bit );
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procedure Int_To_Wide is
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new Integer_Conversion_Check( Integer, Unsigned_Over_8 );
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-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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generic
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type Source is digits <>;
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type Target is mod <>;
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procedure Float_Conversion_Check( For_The_Value : Source;
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Message : String );
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procedure Float_Conversion_Check( For_The_Value : Source;
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Message : String ) is
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Item : Target;
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begin
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Item := Target( For_The_Value );
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Report.Failed("Flt expected Constraint_Error " & Message);
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Report.Comment("Value of" & Target'Image(Item) & NPC);
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exception
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when Constraint_Error => null; -- expected case
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when others => Report.Failed("Flt raised wrong exception " & Message);
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end Float_Conversion_Check;
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procedure Float_To_Short is
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new Float_Conversion_Check( Float, Unsigned_Edge_8 );
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procedure Float_To_Eight is
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new Float_Conversion_Check( Float, Unsigned_8_Bit );
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procedure Float_To_Wide is
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new Float_Conversion_Check( Float, Unsigned_Over_8 );
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function Identity( Root_Beer: Float ) return Float is
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-- a knockoff of Report.Ident_Int for type Float
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Nothing : constant Float := 0.0;
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begin
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if Report.Ident_Bool( Root_Beer = Nothing ) then
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return Nothing;
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else
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return Root_Beer;
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end if;
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end Identity;
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-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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generic
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type Source is delta <>;
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type Target is mod <>;
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procedure Fixed_Conversion_Check( For_The_Value : Source;
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Message : String );
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procedure Fixed_Conversion_Check( For_The_Value : Source;
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Message : String ) is
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Item : Target;
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begin
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Item := Target( For_The_Value );
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Report.Failed("Fix expected Constraint_Error " & Message);
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Report.Comment("Value of" & Target'Image(Item) & NPC);
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exception
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when Constraint_Error => null; -- expected case
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when others => Report.Failed("Fix raised wrong exception " & Message);
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end Fixed_Conversion_Check;
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procedure Fixed_To_Short is
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new Fixed_Conversion_Check( Duration, Unsigned_Edge_8 );
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procedure Fixed_To_Eight is
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new Fixed_Conversion_Check( Duration, Unsigned_8_Bit );
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procedure Fixed_To_Wide is
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new Fixed_Conversion_Check( Duration, Unsigned_Over_8 );
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function Identity( A_Stitch: Duration ) return Duration is
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Threadbare : constant Duration := 0.0;
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begin
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if Report.Ident_Bool( A_Stitch = Threadbare ) then
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return Threadbare;
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else
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return A_Stitch;
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end if;
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end Identity;
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-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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begin -- Main test procedure.
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Report.Test ("C460008", "Check that conversion to " &
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"a modular type raises Constraint_Error when " &
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"the operand value is outside the base range " &
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"of the modular type" );
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-- Integer Error cases
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Int_To_Short( Report.Ident_Int( -1 ), "I2S Dynamic, Negative" );
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Int_To_Short( Report.Ident_Int( Shy_By_One ), "I2S Dynamic, At_Mod" );
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Int_To_Short( Report.Ident_Int( Heavy_By_Two+1 ), "I2S Dynamic, Over_Mod" );
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Int_To_Eight( -Shy_By_One, "I28 Static, Negative" );
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Int_To_Eight( 2**8, "I28 Static, At_Mod" );
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Int_To_Eight( Heavy_By_Two+1, "I28 Static, Over_Mod" );
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Int_To_Wide ( Report.Ident_Int( -(Heavy_By_Two*2) ),
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"I2W Dynamic, Negative" );
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Int_To_Wide ( Heavy_By_Two, "I2W Static, At_Mod" );
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Int_To_Wide ( Report.Ident_Int( Heavy_By_Two*2 ), "I2W Dynamic, Over_Mod" );
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-- Float Error cases
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Float_To_Short( -13.31, "F2S Static, Negative" );
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Float_To_Short( Identity ( Float(Shy_By_One)), "F2S Dynamic, At_Mod" );
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Float_To_Short( 6378.388, "F2S Static, Over_Mod" );
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Float_To_Eight( Identity( -99.3574 ), "F28 Dynamic, Negative" );
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Float_To_Eight( 2.0**8, "F28 Static, At_Mod" );
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Float_To_Eight( 2.0**9, "F28 Static, Over_Mod" );
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Float_To_Wide ( -0.54953_93129_81644, "FTW Static, Negative" );
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Float_To_Wide ( Identity( 2.0**8 +2.0 ), "FTW Dynamic, At_Mod" );
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Float_To_Wide ( Identity( 2.0**8 +2.5001 ), "FTW Dynamic, Over_Mod" );
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Float_To_Wide ( Identity( Float'Last ), "FTW Dynamic, Over_Mod" );
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-- Fixed Error cases
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Fixed_To_Short( Identity( -5.00 ), "D2S Dynamic, Negative" );
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Fixed_To_Short( Shy_By_One * 1.0, "D2S Static, At_Mod" );
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Fixed_To_Short( 1995.9, "D2S Static, Over_Mod" );
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Fixed_To_Eight( -0.5, "D28 Static, Negative" );
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Fixed_To_Eight( 2.0*128, "D28 Static, At_Mod" );
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Fixed_To_Eight( Identity( 2001.2 ), "D28 Dynamic, Over_Mod" );
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Fixed_To_Wide ( Duration'First, "D2W Static, Negative" );
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Fixed_To_Wide ( Identity( 2*128.0 +2.0 ), "D2W Dynamic, At_Mod" );
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Fixed_To_Wide ( Duration'Last, "D2W Static, Over_Mod" );
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-- having made it this far, the rest is downhill...
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-- check a few, correct, edge cases, and we're done
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Eye_Dew: declare
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A_Float : Float := 0.0;
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Your_Time : Duration := 0.0;
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Number : Integer := 0;
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Little : Unsigned_Edge_8;
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Moderate : Unsigned_8_Bit;
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Big : Unsigned_Over_8;
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begin
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Little := Unsigned_Edge_8(A_Float);
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Assert( Little = 0, "Float => Little, 0");
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Moderate := Unsigned_8_Bit (Your_Time);
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Assert( Moderate = 0, "Your_Time => Moderate, 0");
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Big := Unsigned_Over_8 (Number);
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Assert( Big = 0, "Number => Big, 0");
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A_Float := 2.0**8-2.0;
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Your_Time := 2.0*128-2.0;
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Number := 2**8;
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Little := Unsigned_Edge_8(A_Float);
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Assert( Little = 254, "Float => Little, 254");
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Little := Unsigned_Edge_8(Your_Time);
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Assert( Little = 254, "Your_Time => Little, 254");
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Big := Unsigned_Over_8 (A_Float + 2.0);
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Assert( Big = 256, "Sense => Big, 256");
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Big := Unsigned_Over_8 (Number);
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Assert( Big = 256, "Number => Big, 256");
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end Eye_Dew;
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Report.Result;
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end C460008;
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