| -- CXG2024.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 multiplication and division of decimal |
| -- and binary fixed point numbers that result in a |
| -- decimal fixed point type produce acceptable results. |
| -- |
| -- TEST DESCRIPTION: |
| -- Multiplication and division of mixed binary and decimal |
| -- values are performed. Identity functions are used so |
| -- that the operands of the expressions will not be seen |
| -- as static by the compiler. |
| -- |
| -- SPECIAL REQUIREMENTS |
| -- The Strict Mode for the numerical accuracy must be |
| -- selected. The method by which this mode is selected |
| -- is implementation dependent. |
| -- |
| -- APPLICABILITY CRITERIA: |
| -- This test applies only to implementations supporting the |
| -- Numerics Annex. |
| -- This test only applies to the Strict Mode for numerical |
| -- accuracy. |
| -- This test applies only to implementations supporting |
| -- decimal fixed point types of at least 9 digits. |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 4 Apr 96 SAIC Initial release for 2.1 |
| -- 17 Aug 96 SAIC Removed checks for close results |
| -- |
| --! |
| |
| with System; |
| with Report; |
| procedure CXG2024 is |
| |
| procedure Do_Check is |
| Num_Digits : constant := 9; |
| type Pennies is delta 0.01 digits Num_Digits; |
| type Dollars is delta 1.0 digits Num_Digits; |
| |
| type Signed_Sixteenths is delta 0.0625 |
| range -2.0 ** (System.Max_Mantissa-5) .. |
| 2.0 ** (System.Max_Mantissa-5) - 1.0; |
| type Unsigned_Sixteenths is delta 0.0625 |
| range 0.0 .. 2.0 ** (System.Max_Mantissa-4) - 1.0; |
| |
| P1 : Pennies; |
| D1 : Dollars; |
| |
| -- optimization thwarting functions |
| |
| function P (X : Pennies) return Pennies is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 3.21; -- never executed |
| end if; |
| end P; |
| |
| |
| function D (X : Dollars) return Dollars is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 321.0; -- never executed |
| end if; |
| end D; |
| |
| |
| function US (X : Unsigned_Sixteenths) return Unsigned_Sixteenths is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 321.0; -- never executed |
| end if; |
| end US; |
| |
| |
| function SS (X : Signed_Sixteenths) return Signed_Sixteenths is |
| begin |
| if Report.Ident_Bool (True) then |
| return X; |
| else |
| return 321.0; -- never executed |
| end if; |
| end SS; |
| |
| |
| begin |
| |
| P1 := P(0.05) * SS(-200.0); |
| if P1 /= -10.00 then |
| Report.Failed ("1 - expected -10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(0.05) * SS(-100.0); |
| if D1 /= -5.00 then |
| Report.Failed ("2 - expected -5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| P1 := P(0.05) * US(200.0); |
| if P1 /= 10.00 then |
| Report.Failed ("3 - expected 10.00 got " & Pennies'Image (P1)); |
| end if; |
| |
| D1 := P(-0.05) * US(100.0); |
| if D1 /= -5.00 then |
| Report.Failed ("4 - expected -5.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| |
| |
| P1 := P(0.05) / US(1.0); |
| if P1 /= 0.05 then |
| Report.Failed ("6 - expected 0.05 got " & Pennies'Image (P1)); |
| end if; |
| |
| |
| -- check rounding |
| |
| D1 := Dollars'Round (Pennies (P(-101.00) / US(2.0))); |
| if D1 /= -51.00 then |
| Report.Failed ("11 - expected -51.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| D1 := Dollars'Round (Pennies (P(101.00) / US(2.0))); |
| if D1 /= 51.00 then |
| Report.Failed ("12 - expected 51.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| D1 := Dollars'Round (Pennies (SS(-101.00) / P(2.0))); |
| if D1 /= -51.00 then |
| Report.Failed ("13 - expected -51.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| D1 := Dollars'Round (Pennies (US(101.00) / P(2.0))); |
| if D1 /= 51.00 then |
| Report.Failed ("14 - expected 51.00 got " & Dollars'Image (D1)); |
| end if; |
| |
| |
| |
| P1 := P(-102.03) / SS(-0.5); |
| if P1 /= 204.06 then |
| Report.Failed ("15 - expected 204.06 got " & Pennies'Image (P1)); |
| end if; |
| |
| |
| exception |
| when others => |
| Report.Failed ("unexpected exception in Do_Check"); |
| end Do_Check; |
| |
| |
| begin -- main |
| Report.Test ("CXG2024", |
| "Check the accuracy of multiplication and division" & |
| " of mixed decimal and binary fixed point numbers"); |
| |
| Do_Check; |
| |
| Report.Result; |
| end CXG2024; |