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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c4/c460011.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c4/c460011.a b/gcc/testsuite/ada/acats/tests/c4/c460011.a new file mode 100644 index 000000000..56e4c0c4e --- /dev/null +++ b/gcc/testsuite/ada/acats/tests/c4/c460011.a @@ -0,0 +1,210 @@ +-- C460011.A +-- +-- Grant of Unlimited Rights +-- +-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687 and +-- F08630-91-C-0015, 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 of a decimal type to a modular type raises +-- Constraint_Error when the operand value is outside the base range +-- of the modular type. +-- Check that a conversion of a decimal type to an integer type +-- rounds correctly. +-- +-- TEST DESCRIPTION: +-- Test conversion from 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. +-- Check that the the operand is properly rounded during the conversion. +-- +-- APPLICABILITY CRITERIA: +-- This test is applicable to all implementations which support +-- decimal types. +-- +-- CHANGE HISTORY: +-- 24 NOV 98 RLB Split decimal cases from C460008 into this +-- test, added conversions to integer types. +-- 18 JAN 99 RLB Repaired errors in test. +-- +--! + +------------------------------------------------------------------- C460011 + +with Report; + +procedure C460011 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; + + type Signed_8_Bit is range -128 .. 127; + type Signed_Over_8 is range -200 .. 200; + + 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; + +-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- + + type Decim is delta 0.1 digits 5; -- N/A => ERROR. + + generic + type Source is delta <> digits <>; + type Target is mod <>; + procedure Decimal_Conversion_Check( For_The_Value : Source; + Message : String ); + + procedure Decimal_Conversion_Check( For_The_Value : Source; + Message : String ) is + + Item : Target; + + begin + Item := Target( For_The_Value ); + Report.Failed("Deci expected Constraint_Error " & Message); + Report.Comment("Value of" & Target'Image(Item) & NPC); + exception + when Constraint_Error => null; -- expected case + when others => Report.Failed("Deci raised wrong exception " & Message); + end Decimal_Conversion_Check; + + procedure Decim_To_Short is + new Decimal_Conversion_Check( Decim, Unsigned_Edge_8 ); + + procedure Decim_To_Eight is + new Decimal_Conversion_Check( Decim, Unsigned_8_Bit ); + + procedure Decim_To_Wide is + new Decimal_Conversion_Check( Decim, Unsigned_Over_8 ); + + function Identity( Launder: Decim ) return Decim is + Flat_Broke : constant Decim := 0.0; + begin + if Report.Ident_Bool( Launder = Flat_Broke ) then + return Flat_Broke; + else + return Launder; + end if; + end Identity; + +-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- + +begin -- Main test procedure. + + Report.Test ("C460011", "Check that conversion to " & + "a modular type raises Constraint_Error when " & + "the operand value is outside the base range " & + "of the modular type" ); + + -- Decimal Error cases + + Decim_To_Short( Identity( -5.00 ), "M2S Dynamic, Negative" ); + Decim_To_Short( Shy_By_One * 1.0, "M2S Static, At_Mod" ); + Decim_To_Short( 1995.9, "M2S Static, Over_Mod" ); + + Decim_To_Eight( -0.5, "M28 Static, Negative" ); + Decim_To_Eight( 2.0*128, "M28 Static, At_Mod" ); + Decim_To_Eight( Identity( 2001.2 ), "M28 Dynamic, Over_Mod" ); + + Decim_To_Wide ( Decim'First, "M2W Static, Negative" ); + Decim_To_Wide ( Identity( 2*128.0 +2.0 ), "M2W Dynamic, At_Mod" ); + Decim_To_Wide ( Decim'Last, "M2W Static, Over_Mod" ); + + -- Check a few, correct, edge cases, for modular types. + + Eye_Dew: declare + Sense : Decim := 0.00; + + Little : Unsigned_Edge_8; + Moderate : Unsigned_8_Bit; + Big : Unsigned_Over_8; + + begin + Moderate := Unsigned_8_Bit (Sense); + Assert( Moderate = 0, "Sense => Moderate, 0"); + + Sense := 2*128.0; + + Big := Unsigned_Over_8 (Sense); + Assert( Big = 256, "Sense => Big, 256"); + + end Eye_Dew; + + Rounding: declare + Easy : Decim := Identity ( 2.0); + Simple : Decim := Identity ( 2.1); + Halfway : Decim := Identity ( 2.5); + Upward : Decim := Identity ( 2.8); + Chop : Decim := Identity (-2.2); + Neg_Half : Decim := Identity (-2.5); + Downward : Decim := Identity (-2.7); + + Little : Unsigned_Edge_8; + Moderate : Unsigned_8_Bit; + Big : Unsigned_Over_8; + + Also_Little:Signed_8_Bit; + Also_Big : Signed_Over_8; + + begin + Little := Unsigned_Edge_8 (Easy); + Assert( Little = 2, "Easy => Little, 2"); + + Moderate := Unsigned_8_Bit (Simple); + Assert( Moderate = 2, "Simple => Moderate, 2"); + + Big := Unsigned_Over_8 (Halfway); -- Rounds up by 4.6(33). + Assert( Big = 3, "Halfway => Big, 3"); + + Little := Unsigned_Edge_8 (Upward); + Assert( Little = 3, "Upward => Little, 3"); + + Also_Big := Signed_Over_8 (Halfway); -- Rounds up by 4.6(33). + Assert( Also_Big = 3, "Halfway => Also_Big, 3"); + + Also_Little := Signed_8_Bit (Chop); + Assert( Also_Little = -2, "Chop => Also_Little, -2"); + + Also_Big := Signed_Over_8 (Neg_Half); -- Rounds down by 4.6(33). + Assert( Also_Big = -3, "Halfway => Also_Big, -3"); + + Also_Little := Signed_8_Bit (Downward); + Assert( Also_Little = -3, "Downward => Also_Little, -3"); + + end Rounding; + + + Report.Result; + +end C460011; |