summaryrefslogtreecommitdiff
path: root/gcc/testsuite/ada/acats/tests/cxa/cxa5011.a
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/ada/acats/tests/cxa/cxa5011.a
downloadcbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2
cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'gcc/testsuite/ada/acats/tests/cxa/cxa5011.a')
-rw-r--r--gcc/testsuite/ada/acats/tests/cxa/cxa5011.a471
1 files changed, 471 insertions, 0 deletions
diff --git a/gcc/testsuite/ada/acats/tests/cxa/cxa5011.a b/gcc/testsuite/ada/acats/tests/cxa/cxa5011.a
new file mode 100644
index 000000000..c9a007e52
--- /dev/null
+++ b/gcc/testsuite/ada/acats/tests/cxa/cxa5011.a
@@ -0,0 +1,471 @@
+-- CXA5011.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, for both Float_Random and Discrete_Random packages,
+-- the following are true:
+-- 1) two objects of type Generator are initialized to the same state.
+-- 2) when the Function Reset is used to reset two generators
+-- to different time-dependent states, the resulting random values
+-- from each generator are different.
+-- 3) when the Function Reset uses the same integer initiator
+-- to reset two generators to the same state, the resulting random
+-- values from each generator are identical.
+-- 4) when the Function Reset uses different integer initiator
+-- values to reset two generators, the resulting random numbers are
+-- different.
+--
+-- TEST DESCRIPTION:
+-- This test evaluates components of the Ada.Numerics.Float_Random and
+-- Ada.Numerics.Discrete_Random packages.
+-- This test checks to see that objects of type Generator are initialized
+-- to the same state. In addition, the functionality of Function Reset is
+-- validated.
+-- For each of the objectives above, evaluation of the various generators
+-- is performed using each of the following techniques. When the states of
+-- two generators are to be compared, each state is saved, then
+-- transformed to a bounded-string variable. The bounded-strings can
+-- then be compared for equality. In this case, matching bounded-strings
+-- are evidence that the states of two generators are the same.
+-- In addition, two generators are compared by evaluating a series of
+-- random numbers they produce. A matching series of random numbers
+-- implies that the generators were in the same state prior to producing
+-- the numbers.
+--
+--
+-- CHANGE HISTORY:
+-- 20 Apr 95 SAIC Initial prerelease version.
+-- 07 Jul 95 SAIC Incorporated reviewer comments/suggestions.
+-- 22 Apr 96 SAIC Incorporated reviewer comments for ACVC 2.1.
+-- 17 Aug 96 SAIC Deleted Subtest #2.
+-- 09 Feb 01 RLB Repaired to work on implementations with a 16-bit
+-- Integer.
+
+--!
+
+with Ada.Exceptions;
+with Ada.Numerics.Float_Random;
+with Ada.Numerics.Discrete_Random;
+with Ada.Strings.Bounded;
+with ImpDef;
+with Report;
+
+procedure CXA5011 is
+begin
+
+ Report.Test ("CXA5011", "Check the effect of Function Reset on the " &
+ "state of random number generators");
+
+ Test_Block:
+ declare
+
+ use Ada.Exceptions;
+ use Ada.Numerics;
+ use Ada.Strings.Bounded;
+
+ -- Declare an modular subtype, and use it to instantiate the discrete
+ -- random number generator generic package.
+
+ type Discrete_Range is mod 2**(Integer'Size-1);
+ package Discrete_Package is new Discrete_Random(Discrete_Range);
+
+ -- Declaration of random number generator objects.
+
+ Discrete_Generator_1,
+ Discrete_Generator_2 : Discrete_Package.Generator;
+ Float_Generator_1,
+ Float_Generator_2 : Float_Random.Generator;
+
+ -- Declaration of bounded string packages instantiated with the
+ -- value of Max_Image_Width constant from each random number generator
+ -- package, and bounded string variables used to hold the image of
+ -- random number generator states.
+
+ package Discrete_String_Pack is
+ new Generic_Bounded_Length(Discrete_Package.Max_Image_Width);
+
+ package Float_String_Pack is
+ new Generic_Bounded_Length(Float_Random.Max_Image_Width);
+
+ use Discrete_String_Pack, Float_String_Pack;
+
+ TC_Seed : Integer;
+ TC_Max_Loop_Count : constant Natural := 1000;
+ Allowed_Matches : constant Natural := 2;
+ --
+ -- In a sequence of TC_Max_Loop_Count random numbers that should
+ -- not match, some may match by chance. Up to Allowed_Matches
+ -- numbers may match before the test is considered to fail.
+ --
+
+
+ procedure Check_Float_State (Gen_1, Gen_2 : Float_Random.Generator;
+ Sub_Test : Integer;
+ States_Should_Match : Boolean) is
+
+ use type Float_Random.State;
+
+ State_1,
+ State_2 : Float_Random.State;
+
+ State_String_1,
+ State_String_2 : Float_String_Pack.Bounded_String :=
+ Float_String_Pack.Null_Bounded_String;
+ begin
+
+ Float_Random.Save(Gen => Gen_1, To_State => State_1);
+ Float_Random.Save(Gen_2, State_2);
+
+ State_String_1 :=
+ Float_String_Pack.To_Bounded_String(Source =>
+ Float_Random.Image(Of_State => State_1));
+
+ State_String_2 :=
+ Float_String_Pack.To_Bounded_String(Float_Random.Image(State_2));
+
+ case States_Should_Match is
+ when True =>
+ if State_1 /= State_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State values from Float generators " &
+ "are not the same");
+ end if;
+ if State_String_1 /= State_String_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State strings from Float generators " &
+ "are not the same");
+ end if;
+ when False =>
+ if State_1 = State_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State values from Float generators " &
+ "are the same");
+ end if;
+ if State_String_1 = State_String_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State strings from Float generators " &
+ "are the same");
+ end if;
+ end case;
+ end Check_Float_State;
+
+
+
+ procedure Check_Discrete_State (Gen_1,
+ Gen_2 : Discrete_Package.Generator;
+ Sub_Test : Integer;
+ States_Should_Match : Boolean) is
+
+ use type Discrete_Package.State;
+
+ State_1, State_2 : Discrete_Package.State;
+
+ State_String_1,
+ State_String_2 : Discrete_String_Pack.Bounded_String :=
+ Discrete_String_Pack.Null_Bounded_String;
+ begin
+
+ Discrete_Package.Save(Gen => Gen_1,
+ To_State => State_1);
+ Discrete_Package.Save(Gen_2, To_State => State_2);
+
+ State_String_1 :=
+ Discrete_String_Pack.To_Bounded_String(Source =>
+ Discrete_Package.Image(Of_State => State_1));
+
+ State_String_2 :=
+ Discrete_String_Pack.To_Bounded_String(Source =>
+ Discrete_Package.Image(Of_State => State_2));
+
+ case States_Should_Match is
+ when True =>
+ if State_1 /= State_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State values from Discrete " &
+ "generators are not the same");
+ end if;
+ if State_String_1 /= State_String_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State strings from Discrete " &
+ "generators are not the same");
+ end if;
+ when False =>
+ if State_1 = State_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State values from Discrete " &
+ "generators are the same");
+ end if;
+ if State_String_1 = State_String_2 then
+ Report.Failed("Subtest #" & Integer'Image(Sub_Test) &
+ " State strings from Discrete " &
+ "generators are the same");
+ end if;
+ end case;
+ end Check_Discrete_State;
+
+
+
+ procedure Check_Float_Values (Gen_1, Gen_2 : Float_Random.Generator;
+ Sub_Test : Integer;
+ Values_Should_Match : Boolean) is
+ Matches : Natural := 0;
+ Check_Failed : Boolean := False;
+ begin
+ case Values_Should_Match is
+ when True =>
+ for i in 1..TC_Max_Loop_Count loop
+ if Float_Random.Random(Gen_1) /= Float_Random.Random(Gen_2)
+ then
+ Check_Failed := True;
+ exit;
+ end if;
+ end loop;
+ if Check_Failed then
+ Report.Failed("Sub_Test # " & Integer'Image(Sub_Test) &
+ " Random numbers from Float generators " &
+ "Failed check");
+ end if;
+ when False =>
+ for i in 1..TC_Max_Loop_Count loop
+ if Float_Random.Random(Gen_1) = Float_Random.Random(Gen_2)
+ then
+ Matches := Matches + 1;
+ end if;
+ end loop;
+ end case;
+
+ if (Values_Should_Match and Check_Failed) or
+ (not Values_Should_Match and Matches > Allowed_Matches)
+ then
+ Report.Failed("Sub_Test # " & Integer'Image(Sub_Test) &
+ " Random numbers from Float generators " &
+ "Failed check");
+ end if;
+
+ end Check_Float_Values;
+
+
+
+ procedure Check_Discrete_Values (Gen_1,
+ Gen_2 : Discrete_Package.Generator;
+ Sub_Test : Integer;
+ Values_Should_Match : Boolean) is
+ Matches : Natural := 0;
+ Check_Failed : Boolean := False;
+ begin
+ case Values_Should_Match is
+ when True =>
+ for i in 1..TC_Max_Loop_Count loop
+ if Discrete_Package.Random(Gen_1) /=
+ Discrete_Package.Random(Gen_2)
+ then
+ Check_Failed := True;
+ exit;
+ end if;
+ end loop;
+ when False =>
+ for i in 1..TC_Max_Loop_Count loop
+ if Discrete_Package.Random(Gen_1) =
+ Discrete_Package.Random(Gen_2)
+ then
+ Matches := Matches + 1;
+ end if;
+ end loop;
+ end case;
+
+ if (Values_Should_Match and Check_Failed) or
+ (not Values_Should_Match and Matches > Allowed_Matches)
+ then
+ Report.Failed("Sub_Test # " & Integer'Image(Sub_Test) &
+ " Random numbers from Discrete generators " &
+ "Failed check");
+ end if;
+
+ end Check_Discrete_Values;
+
+
+
+ begin
+
+ Sub_Test_1:
+ -- Check that two objects of type Generator are initialized to the
+ -- same state.
+ begin
+
+ -- Since the discrete and float random generators are in the initial
+ -- state, using Procedure Save to save the states of the generator
+ -- objects, and transforming these states into strings using
+ -- Function Image, should yield identical strings.
+
+ Check_Discrete_State (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 1,
+ States_Should_Match => True);
+
+ Check_Float_State (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 1,
+ States_Should_Match => True);
+
+ -- Since the two random generator objects are in their initial
+ -- state, the values produced from each (upon calls to Random)
+ -- should be identical.
+
+ Check_Discrete_Values (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 1,
+ Values_Should_Match => True);
+
+ Check_Float_Values (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 1,
+ Values_Should_Match => True);
+
+ end Sub_Test_1;
+
+
+
+ Sub_Test_3:
+ -- Check that when the Function Reset uses the same integer
+ -- initiator to reset two generators to the same state, the
+ -- resulting random values and the state from each generator
+ -- are identical.
+ declare
+ use Discrete_Package, Float_Random;
+ begin
+
+ -- Reset the generators to the same states, using the version of
+ -- Function Reset with both generator parameter and initiator
+ -- specified.
+
+ TC_Seed := Integer(Random(Discrete_Generator_1));
+ Reset(Gen => Discrete_Generator_1, Initiator => TC_Seed);
+ Reset(Discrete_Generator_2, Initiator => TC_Seed);
+ Reset(Float_Generator_1, TC_Seed);
+ Reset(Float_Generator_2, TC_Seed);
+
+ -- Since the random generators have been reset to identical states,
+ -- bounded string images of these states should yield identical
+ -- strings.
+
+ Check_Discrete_State (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 3,
+ States_Should_Match => True);
+
+ Check_Float_State (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 3,
+ States_Should_Match => True);
+
+ -- Since the random generators have been reset to identical states,
+ -- the values produced from each (upon calls to Random) should
+ -- be identical.
+
+ Check_Discrete_Values (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 3,
+ Values_Should_Match => True);
+
+ Check_Float_Values (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 3,
+ Values_Should_Match => True);
+
+ end Sub_Test_3;
+
+
+
+ Sub_Test_4:
+ -- Check that when the Function Reset uses different integer
+ -- initiator values to reset two generators, the resulting random
+ -- numbers and states are different.
+ begin
+
+ -- Reset the generators to different states.
+
+ TC_Seed :=
+ Integer(Discrete_Package.Random(Discrete_Generator_1));
+
+ Discrete_Package.Reset(Gen => Discrete_Generator_1,
+ Initiator => TC_Seed);
+
+ -- Set the seed value to a different value for the second call
+ -- to Reset.
+ -- Note: A second call to Random could be made, as above, but that
+ -- would not ensure that the resulting seed value was
+ -- different from the first.
+
+ if TC_Seed /= Integer'Last then
+ TC_Seed := TC_Seed + 1;
+ else
+ TC_Seed := TC_Seed - 1;
+ end if;
+
+ Discrete_Package.Reset(Gen => Discrete_Generator_2,
+ Initiator => TC_Seed);
+
+ Float_Random.Reset(Float_Generator_1, 16#FF#); -- 255
+ Float_Random.Reset(Float_Generator_2, 2#1110_0000#); -- 224
+
+ -- Since the two float random generators are in different
+ -- states, the bounded string images depicting their states should
+ -- differ.
+
+ Check_Discrete_State (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 4,
+ States_Should_Match => False);
+
+ Check_Float_State (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 4,
+ States_Should_Match => False);
+
+ -- Since the two discrete random generator objects were reset
+ -- to different states, the values produced from each (upon calls
+ -- to Random) should differ.
+
+ Check_Discrete_Values (Discrete_Generator_1,
+ Discrete_Generator_2,
+ Sub_Test => 4,
+ Values_Should_Match => False);
+
+ Check_Float_Values (Float_Generator_1,
+ Float_Generator_2,
+ Sub_Test => 4,
+ Values_Should_Match => False);
+
+ end Sub_Test_4;
+
+ exception
+ when The_Error : others =>
+ Report.Failed ("The following exception was raised in the " &
+ "Test_Block: " & Exception_Name(The_Error));
+ end Test_Block;
+
+ Report.Result;
+
+end CXA5011;