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