| -- CXF1001.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 values of 2 and 10 are allowable values for Machine_Radix |
| -- of a decimal first subtype. |
| -- Check that the value of Decimal.Max_Decimal_Digits is at least 18; |
| -- the value of Decimal.Max_Scale is at least 18; the value of |
| -- Decimal.Min_Scale is at most 0. |
| -- |
| -- TEST DESCRIPTION: |
| -- This test examines the Machine_Radix attribute definition clause |
| -- and its effect on Decimal fixed point types, as well as several |
| -- constants from the package Ada.Decimal. |
| -- The first subtest checks that the Machine_Radix attribute will |
| -- return the value set for Machine_Radix by an attribute definition |
| -- clause. The second and third subtests examine differences between |
| -- the binary and decimal scaling of a type, based on the radix |
| -- representation. The final subtest examines the values |
| -- assigned to constants Min_Scale, Max_Scale, and Max_Decimal_Digits, |
| -- found in the package Ada.Decimal. |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 29 Dec 94 SAIC Restructured Radix 10 and Radix 2 test blocks. |
| -- |
| --! |
| |
| with Report; |
| with Ada.Decimal; |
| |
| procedure CXF1001 is |
| begin |
| |
| Report.Test ("CXF1001", "Check that values of 2 and 10 are allowable " & |
| "values for Machine_Radix of a decimal first " & |
| "subtype. Check that the value of " & |
| "Decimal.Max_Decimal_Digits is at least 18; " & |
| "the value of Decimal.Max_Scale is at least " & |
| "18; the value of Decimal.Min_Scale is at " & |
| "most 0"); |
| |
| Attribute_Check_Block: |
| declare |
| |
| Del : constant := 1.0/10**2; |
| Const_Digits : constant := 3; |
| Two : constant := 2; |
| Ten : constant := 10; |
| |
| type Radix_2_Type_1 is delta 0.01 digits 7; |
| type Radix_2_Type_2 is delta Ada.Decimal.Min_Delta digits 10; |
| type Radix_2_Type_3 is |
| delta 0.000_1 digits Ada.Decimal.Max_Decimal_Digits; |
| |
| type Radix_10_Type_1 is delta 10.0**(-Ada.Decimal.Max_Scale) digits 8; |
| type Radix_10_Type_2 is delta 10.0**(-Ada.Decimal.Min_Scale) digits 6; |
| type Radix_10_Type_3 is delta Ada.Decimal.Max_Delta digits 15; |
| |
| |
| -- Use an attribute definition clause to set the Machine_Radix for a |
| -- decimal first subtype to either 2 or 10. |
| for Radix_2_Type_1'Machine_Radix use 2; |
| for Radix_2_Type_2'Machine_Radix use Two; |
| for Radix_2_Type_3'Machine_Radix use 10-8; |
| |
| for Radix_10_Type_1'Machine_Radix use 2*15/Const_Digits; |
| for Radix_10_Type_2'Machine_Radix use Ten; |
| for Radix_10_Type_3'Machine_Radix use Radix_10_Type_2'Machine_Radix; |
| |
| |
| begin |
| |
| -- Check that the attribute 'Machine_Radix returns the value assigned |
| -- by the attribute definition clause. |
| |
| if Radix_2_Type_1'Machine_Radix /= 2 or else |
| Radix_2_Type_2'Machine_Radix /= 2 or else |
| Radix_2_Type_3'Machine_Radix /= 2 |
| then |
| Report.Failed("Incorrect radix value returned, 2 expected"); |
| end if; |
| |
| if Radix_10_Type_1'Machine_Radix /= 10 or else |
| Radix_10_Type_2'Machine_Radix /= 10 or else |
| Radix_10_Type_3'Machine_Radix /= 10 |
| then |
| Report.Failed("Incorrect radix value returned, 10 expected"); |
| end if; |
| |
| exception |
| when others => Report.Failed ("Exception raised in Attr_Check_Block"); |
| end Attribute_Check_Block; |
| |
| |
| |
| Radix_Block: |
| -- Premises: |
| -- 1) Choose several numbers, from types using either decimal scaling or |
| -- binary scaling. |
| -- 1) Repetitively add these numbers to themselves. |
| -- 3) Validate that the result is the expected result, regardless of the |
| -- scaling used in the definition of the type. |
| declare |
| |
| Number_Of_Values : constant := 3; |
| Loop_Count : constant := 1000; |
| |
| type Radix_2_Type is delta 0.0001 digits 10; |
| type Radix_10_Type is delta 0.0001 digits 10; |
| |
| for Radix_2_Type'Machine_Radix use 2; |
| for Radix_10_Type'Machine_Radix use 10; |
| |
| type Result_Record_Type is record |
| Rad_2 : Radix_2_Type; |
| Rad_10 : Radix_10_Type; |
| end record; |
| |
| type Result_Array_Type is array (1..Number_Of_Values) |
| of Result_Record_Type; |
| |
| Result_Array : Result_Array_Type := ((50.00, 50.00), |
| (613.00, 613.00), |
| (72.70, 72.70)); |
| |
| function Repetitive_Radix_2_Add (Value : in Radix_2_Type) |
| return Radix_2_Type is |
| Result : Radix_2_Type := 0.0; |
| begin |
| for i in 1..Loop_Count loop |
| Result := Result + Value; |
| end loop; |
| return Result; |
| end Repetitive_Radix_2_Add; |
| |
| function Repetitive_Radix_10_Add (Value : in Radix_10_Type) |
| return Radix_10_Type is |
| Result : Radix_10_Type := 0.0; |
| begin |
| for i in 1..Loop_Count loop |
| Result := Result + Value; |
| end loop; |
| return Result; |
| end Repetitive_Radix_10_Add; |
| |
| begin |
| |
| -- Radix 2 Cases, three different values. |
| -- Compare the result of the repetitive addition with the expected |
| -- Radix 2 result, as well as with the Radix 10 value after type |
| -- conversion. |
| |
| if Repetitive_Radix_2_Add(0.05) /= Result_Array(1).Rad_2 or |
| Repetitive_Radix_2_Add(0.05) /= Radix_2_Type(Result_Array(1).Rad_10) |
| then |
| Report.Failed("Incorrect Radix 2 Result, Case 1"); |
| end if; |
| |
| if Repetitive_Radix_2_Add(0.613) /= |
| Result_Array(2).Rad_2 or |
| Repetitive_Radix_2_Add(0.613) /= |
| Radix_2_Type(Result_Array(2).Rad_10) |
| then |
| Report.Failed("Incorrect Radix 2 Result, Case 2"); |
| end if; |
| |
| if Repetitive_Radix_2_Add(0.0727) /= |
| Result_Array(3).Rad_2 or |
| Repetitive_Radix_2_Add(0.0727) /= |
| Radix_2_Type(Result_Array(3).Rad_10) |
| then |
| Report.Failed("Incorrect Radix 2 Result, Case 3"); |
| end if; |
| |
| -- Radix 10 Cases, three different values. |
| -- Compare the result of the repetitive addition with the expected |
| -- Radix 10 result, as well as with the Radix 2 value after type |
| -- conversion. |
| |
| if Repetitive_Radix_10_Add(0.05) /= Result_Array(1).Rad_10 or |
| Repetitive_Radix_10_Add(0.05) /= Radix_10_Type(Result_Array(1).Rad_2) |
| then |
| Report.Failed("Incorrect Radix 10 Result, Case 1"); |
| end if; |
| |
| if Repetitive_Radix_10_Add(0.613) /= |
| Result_Array(2).Rad_10 or |
| Repetitive_Radix_10_Add(0.613) /= |
| Radix_10_Type(Result_Array(2).Rad_2) |
| then |
| Report.Failed("Incorrect Radix 10 Result, Case 2"); |
| end if; |
| |
| if Repetitive_Radix_10_Add(0.0727) /= |
| Result_Array(3).Rad_10 or |
| Repetitive_Radix_10_Add(0.0727) /= |
| Radix_10_Type(Result_Array(3).Rad_2) |
| then |
| Report.Failed("Incorrect Radix 10 Result, Case 3"); |
| end if; |
| |
| exception |
| when others => Report.Failed ("Exception raised in Radix_Block"); |
| end Radix_Block; |
| |
| |
| |
| Size_Block: |
| -- Check the implementation max/min values of constants declared in |
| -- package Ada.Decimal. |
| declare |
| Minimum_Required_Size : constant := 18; |
| Maximum_Allowed_Size : constant := 0; |
| begin |
| |
| -- Check that the Max_Decimal_Digits value is at least 18. |
| if not (Ada.Decimal.Max_Decimal_Digits >= Minimum_Required_Size) then |
| Report.Failed("Insufficient size provided for Max_Decimal_Digits"); |
| end if; |
| |
| -- Check that the Max_Scale value is at least 18. |
| if not (Ada.Decimal.Max_Scale >= Minimum_Required_Size) then |
| Report.Failed("Insufficient size provided for Max_Scale"); |
| end if; |
| |
| -- Check that the Min_Scale value is at most 0. |
| if not (Ada.Decimal.Min_Scale <= Maximum_Allowed_Size) then |
| Report.Failed("Too large a value provided for Min_Scale"); |
| end if; |
| |
| exception |
| when others => Report.Failed ("Exception raised in Size_Block"); |
| end Size_Block; |
| |
| Report.Result; |
| |
| end CXF1001; |
