-- 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;