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comparison gcc/testsuite/ada/acats/tests/c4/c460011.a @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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1 -- C460011.A
2 --
3 -- Grant of Unlimited Rights
4 --
5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687 and
6 -- F08630-91-C-0015, the U.S. Government obtained unlimited rights in the
7 -- software and documentation contained herein. Unlimited rights are
8 -- defined in DFAR 252.227-7013(a)(19). By making this public release,
9 -- the Government intends to confer upon all recipients unlimited rights
10 -- equal to those held by the Government. These rights include rights to
11 -- use, duplicate, release or disclose the released technical data and
12 -- computer software in whole or in part, in any manner and for any purpose
13 -- whatsoever, and to have or permit others to do so.
14 --
15 -- DISCLAIMER
16 --
17 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
18 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
19 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
20 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
21 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
22 -- PARTICULAR PURPOSE OF SAID MATERIAL.
23 --*
24 --
25 -- OBJECTIVE:
26 -- Check that conversion of a decimal type to a modular type raises
27 -- Constraint_Error when the operand value is outside the base range
28 -- of the modular type.
29 -- Check that a conversion of a decimal type to an integer type
30 -- rounds correctly.
31 --
32 -- TEST DESCRIPTION:
33 -- Test conversion from decimal types to modular types. Test
34 -- conversion to mod 255, mod 256 and mod 258 to test the boundaries
35 -- of 8 bit (+/-) unsigned numbers.
36 -- Test operand values that are negative, the value of the mod,
37 -- and greater than the value of the mod.
38 -- Declare a generic test procedure and instantiate it for each of the
39 -- unsigned types for each operand type.
40 -- Check that the operand is properly rounded during the conversion.
41 --
42 -- APPLICABILITY CRITERIA:
43 -- This test is applicable to all implementations which support
44 -- decimal types.
45 --
46 -- CHANGE HISTORY:
47 -- 24 NOV 98 RLB Split decimal cases from C460008 into this
48 -- test, added conversions to integer types.
49 -- 18 JAN 99 RLB Repaired errors in test.
50 --
51 --!
52
53 ------------------------------------------------------------------- C460011
54
55 with Report;
56
57 procedure C460011 is
58
59 Shy_By_One : constant := 2**8-1;
60 Heavy_By_Two : constant := 2**8+2;
61
62 type Unsigned_Edge_8 is mod Shy_By_One;
63 type Unsigned_8_Bit is mod 2**8;
64 type Unsigned_Over_8 is mod Heavy_By_Two;
65
66 type Signed_8_Bit is range -128 .. 127;
67 type Signed_Over_8 is range -200 .. 200;
68
69 NPC : constant String := " not properly converted";
70
71 procedure Assert( Truth: Boolean; Message: String ) is
72 begin
73 if not Truth then
74 Report.Failed(Message);
75 end if;
76 end Assert;
77
78 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
79
80 type Decim is delta 0.1 digits 5; -- N/A => ERROR.
81
82 generic
83 type Source is delta <> digits <>;
84 type Target is mod <>;
85 procedure Decimal_Conversion_Check( For_The_Value : Source;
86 Message : String );
87
88 procedure Decimal_Conversion_Check( For_The_Value : Source;
89 Message : String ) is
90
91 Item : Target;
92
93 begin
94 Item := Target( For_The_Value );
95 Report.Failed("Deci expected Constraint_Error " & Message);
96 Report.Comment("Value of" & Target'Image(Item) & NPC);
97 exception
98 when Constraint_Error => null; -- expected case
99 when others => Report.Failed("Deci raised wrong exception " & Message);
100 end Decimal_Conversion_Check;
101
102 procedure Decim_To_Short is
103 new Decimal_Conversion_Check( Decim, Unsigned_Edge_8 );
104
105 procedure Decim_To_Eight is
106 new Decimal_Conversion_Check( Decim, Unsigned_8_Bit );
107
108 procedure Decim_To_Wide is
109 new Decimal_Conversion_Check( Decim, Unsigned_Over_8 );
110
111 function Identity( Launder: Decim ) return Decim is
112 Flat_Broke : constant Decim := 0.0;
113 begin
114 if Report.Ident_Bool( Launder = Flat_Broke ) then
115 return Flat_Broke;
116 else
117 return Launder;
118 end if;
119 end Identity;
120
121 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
122
123 begin -- Main test procedure.
124
125 Report.Test ("C460011", "Check that conversion to " &
126 "a modular type raises Constraint_Error when " &
127 "the operand value is outside the base range " &
128 "of the modular type" );
129
130 -- Decimal Error cases
131
132 Decim_To_Short( Identity( -5.00 ), "M2S Dynamic, Negative" );
133 Decim_To_Short( Shy_By_One * 1.0, "M2S Static, At_Mod" );
134 Decim_To_Short( 1995.9, "M2S Static, Over_Mod" );
135
136 Decim_To_Eight( -0.5, "M28 Static, Negative" );
137 Decim_To_Eight( 2.0*128, "M28 Static, At_Mod" );
138 Decim_To_Eight( Identity( 2001.2 ), "M28 Dynamic, Over_Mod" );
139
140 Decim_To_Wide ( Decim'First, "M2W Static, Negative" );
141 Decim_To_Wide ( Identity( 2*128.0 +2.0 ), "M2W Dynamic, At_Mod" );
142 Decim_To_Wide ( Decim'Last, "M2W Static, Over_Mod" );
143
144 -- Check a few, correct, edge cases, for modular types.
145
146 Eye_Dew: declare
147 Sense : Decim := 0.00;
148
149 Little : Unsigned_Edge_8;
150 Moderate : Unsigned_8_Bit;
151 Big : Unsigned_Over_8;
152
153 begin
154 Moderate := Unsigned_8_Bit (Sense);
155 Assert( Moderate = 0, "Sense => Moderate, 0");
156
157 Sense := 2*128.0;
158
159 Big := Unsigned_Over_8 (Sense);
160 Assert( Big = 256, "Sense => Big, 256");
161
162 end Eye_Dew;
163
164 Rounding: declare
165 Easy : Decim := Identity ( 2.0);
166 Simple : Decim := Identity ( 2.1);
167 Halfway : Decim := Identity ( 2.5);
168 Upward : Decim := Identity ( 2.8);
169 Chop : Decim := Identity (-2.2);
170 Neg_Half : Decim := Identity (-2.5);
171 Downward : Decim := Identity (-2.7);
172
173 Little : Unsigned_Edge_8;
174 Moderate : Unsigned_8_Bit;
175 Big : Unsigned_Over_8;
176
177 Also_Little:Signed_8_Bit;
178 Also_Big : Signed_Over_8;
179
180 begin
181 Little := Unsigned_Edge_8 (Easy);
182 Assert( Little = 2, "Easy => Little, 2");
183
184 Moderate := Unsigned_8_Bit (Simple);
185 Assert( Moderate = 2, "Simple => Moderate, 2");
186
187 Big := Unsigned_Over_8 (Halfway); -- Rounds up by 4.6(33).
188 Assert( Big = 3, "Halfway => Big, 3");
189
190 Little := Unsigned_Edge_8 (Upward);
191 Assert( Little = 3, "Upward => Little, 3");
192
193 Also_Big := Signed_Over_8 (Halfway); -- Rounds up by 4.6(33).
194 Assert( Also_Big = 3, "Halfway => Also_Big, 3");
195
196 Also_Little := Signed_8_Bit (Chop);
197 Assert( Also_Little = -2, "Chop => Also_Little, -2");
198
199 Also_Big := Signed_Over_8 (Neg_Half); -- Rounds down by 4.6(33).
200 Assert( Also_Big = -3, "Halfway => Also_Big, -3");
201
202 Also_Little := Signed_8_Bit (Downward);
203 Assert( Also_Little = -3, "Downward => Also_Little, -3");
204
205 end Rounding;
206
207
208 Report.Result;
209
210 end C460011;