| -- 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; |
