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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
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1 files changed, 309 insertions, 0 deletions

diff --git a/gcc/testsuite/ada/acats/tests/cxg/cxg2022.a b/gcc/testsuite/ada/acats/tests/cxg/cxg2022.a
new file mode 100644
index 000000000..f9e4d1cae
--- /dev/null
+++ b/gcc/testsuite/ada/acats/tests/cxg/cxg2022.a
@@ -0,0 +1,309 @@
+-- CXG2022.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 binary fixed point 
+--      numbers with compatible 'small values produce exact results.
+--
+-- TEST DESCRIPTION:
+--      Signed, unsigned, and a mixture of signed and unsigned
+--      binary fixed point values are multiplied and divided.
+--      The result is checked against the expected "perfect result set"
+--
+-- 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.
+--
+--
+-- CHANGE HISTORY:
+--       1 Apr 96   SAIC    Initial release for 2.1
+--      29 Jan 1998 EDS     Repaired fixed point errors ("**" and 
+--                          assumptions about 'Small)
+--!
+
+with System;
+with Report;
+procedure CXG2022 is
+   Verbose : constant Boolean := False;
+
+procedure Check_Signed is
+   type Pairs is delta 2.0 range -2.0 ** (System.Max_Mantissa) ..
+                                  2.0 ** (System.Max_Mantissa) - 1.0;
+   type Halves is delta 0.5 range -2.0 ** (System.Max_Mantissa-2) ..
+                                   2.0 ** (System.Max_Mantissa-2) - 1.0;
+   P1, P2, P3, P4 : Pairs;
+   H1, H2, H3, H4 : Halves;
+
+   procedure Dont_Opt is
+   -- keep optimizer from knowing the constant value of expressions
+   begin
+      if Report.Ident_Bool (False) then
+         P1 :=  2.0;  P2 := 4.0;  P3 := 6.0;
+         H1 := -2.0;  H2 := 9.0;  H3 := 3.0;
+      end if;
+   end Dont_Opt;
+
+begin
+   H1 := -0.5;
+   H2 := Halves'First;
+   H3 := 1.0;
+   P1 := 12.0;
+   P2 := Pairs'First;
+   P3 := Pairs'Last;
+   Dont_Opt;
+
+   P4 := Pairs (P1 * H1);     -- 12.0 * -0.5
+   if P4 /= -6.0 then
+      Report.Failed ("12.0 * -0.5 = " & Pairs'Image (P4));
+   end if;
+
+   H4 := Halves (P1 / H1);     -- 12.0 / -0.5
+   if H4 /= -24.0 then
+      Report.Failed ("12.0 / -0.5 = " & Halves'Image (H4));
+   end if;
+
+   P4 := P3 * H3;     -- Pairs'Last * 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last * 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P3 / H3;     -- Pairs'Last / 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last / 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P2 * 0.25;     -- Pairs'First * 0.25
+   if P4 /= Pairs (-2.0 ** (System.Max_Mantissa - 2)) then
+      Report.Failed ("Pairs'First * 0.25 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := 100.5 / H1;   -- 100.5 / -0.5
+   if P4 = -201.0 then
+      null;   -- Perfect result
+   elsif Pairs'Small = 2.0 and ( P4 = -200.0 or P4 = -202.0 ) then
+      null;   -- Allowed variation
+   else
+      Report.Failed ("Pairs'Small =" & Pairs'Image (Pairs'Small) &
+                     " and 100.5/-0.5 = " & Pairs'Image (P4) );
+   end if;
+
+   H4 := H1 * H2;   --  -0.5 * Halves'First
+   if H4 /= Halves (2.0 ** (System.Max_Mantissa-3)) then
+      Report.Failed ("-0.5 * Halves'First =" & Halves'Image (H4) &
+                     " instead of " &
+                     Halves'Image( Halves(2.0 ** (System.Max_Mantissa-3)))); 
+   end if;
+
+exception
+   when others =>
+      Report.Failed ("unexpected exception in Check_Signed");
+end Check_Signed;
+
+
+
+procedure Check_Unsigned is
+   type Pairs is delta 2.0 range 0.0 .. 2.0 ** (System.Max_Mantissa+1) - 1.0;
+   type Halves is delta 0.5 range 0.0 .. 2.0 ** (System.Max_Mantissa-1) - 1.0;
+   P1, P2, P3, P4 : Pairs;
+   H1, H2, H3, H4 : Halves;
+
+   procedure Dont_Opt is
+   -- keep optimizer from knowing the constant value of expressions
+   begin
+      if Report.Ident_Bool (False) then
+         P1 :=  2.0;  P2 := 4.0;  P3 := 6.0;
+         H1 :=  2.0;  H2 := 9.0;  H3 := 3.0;
+      end if;
+   end Dont_Opt;
+
+begin
+   H1 := 10.5;
+   H2 := Halves(2.0 ** (System.Max_Mantissa - 6));
+   H3 := 1.0;
+   P1 := 12.0;
+   P2 := Pairs'Last / 2;
+   P3 := Pairs'Last;
+   Dont_Opt;
+
+   P4 := Pairs (P1 * H1);     -- 12.0 * 10.5
+   if P4 /= 126.0 then
+      Report.Failed ("12.0 * 10.5 = " & Pairs'Image (P4));
+   end if;
+
+   H4 := Halves (P1 / H1);     -- 12.0 / 10.5
+   if H4 /= 1.0 and H4 /= 1.5 then
+      Report.Failed ("12.0 / 10.5 = " & Halves'Image (H4));
+   end if;
+
+   P4 := P3 * H3;     -- Pairs'Last * 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last * 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P3 / H3;     -- Pairs'Last / 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last / 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P1 * 0.25;     -- 12.0 * 0.25
+   if P4 /= 2.0 and P4 /= 4.0 then
+      Report.Failed ("12.0 * 0.25 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := 100.5 / H1;   -- 100.5 / 10.5    = 9.571...
+   if P4 /= 8.0 and P4 /= 10.0 then
+      Report.Failed ("100.5/10.5 = " & Pairs'Image (P4));
+   end if;
+
+   H4 := H2 * 2;   --  2**(max_mantissa-6) * 2
+   if H4 /= Halves(2.0 ** (System.Max_Mantissa-5)) then
+      Report.Failed ("2**(System.Max_Mantissa-6) * 2=" & Halves'Image (H4) &
+                     " instead of " &
+                     Halves'Image( Halves(2.0 ** (System.Max_Mantissa-5)))); 
+   end if;
+
+exception
+   when others =>
+      Report.Failed ("unexpected exception in Check_Unsigned");
+end Check_Unsigned;
+
+
+
+procedure Check_Mixed is
+   type Pairs is delta 2.0 range -2.0 ** (System.Max_Mantissa) ..
+                                  2.0 ** (System.Max_Mantissa) - 1.0;
+   type Halves is delta 0.5 range 0.0 .. 2.0 ** (System.Max_Mantissa-1) - 1.0;
+   P1, P2, P3, P4 : Pairs;
+   H1, H2, H3, H4 : Halves;
+
+   procedure Dont_Opt is
+   -- keep optimizer from knowing the constant value of expressions
+   begin
+      if Report.Ident_Bool (False) then
+         P1 :=  2.0;  P2 := 4.0;  P3 := 6.0;
+         H1 :=  2.0;  H2 := 9.0;  H3 := 3.0;
+      end if;
+   end Dont_Opt;
+
+begin
+   H1 := 10.5;
+   H2 := Halves(2.0 ** (System.Max_Mantissa - 6));
+   H3 := 1.0;
+   P1 := 12.0;
+   P2 := -4.0;
+   P3 := Pairs'Last;
+   Dont_Opt;
+
+   P4 := Pairs (P1 * H1);     -- 12.0 * 10.5
+   if P4 /= 126.0 then
+      Report.Failed ("12.0 * 10.5 = " & Pairs'Image (P4));
+   end if;
+
+   H4 := Halves (P1 / H1);     -- 12.0 / 10.5
+   if H4 /= 1.0 and H4 /= 1.5 then
+      Report.Failed ("12.0 / 10.5 = " & Halves'Image (H4));
+   end if;
+
+   P4 := P3 * H3;     -- Pairs'Last * 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last * 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P3 / H3;     -- Pairs'Last / 1.0
+   if P4 /= Pairs'Last then
+      Report.Failed ("Pairs'Last / 1.0 = " & Pairs'Image (P4));
+   end if;
+
+   P4 := P1 * 0.25;   -- 12.0 * 0.25
+   if P4 = 3.0 then
+      null;    -- Perfect result
+   elsif Pairs'Small = 2.0 and then ( P4 = 2.0 or P4 = 4.0 ) then
+      null;    -- Allowed deviation
+   else
+      Report.Failed ("Pairs'Small =" & Pairs'Image (Pairs'Small) &
+                     "and 12.0 * 0.25 = " & Pairs'Image (P4) );
+   end if;
+
+   P4 := 100.5 / H1;   -- 100.5 / 10.5    = 9.571...
+   if P4 = 9.0 then
+      null;    -- Perfect result
+   elsif Pairs'Small = 2.0 and then ( P4 = 8.0 or P4 = 10.0 ) then
+      null;    -- Allowed values
+   else
+     Report.Failed ("Pairs'Small =" & Pairs'Image (Pairs'Small) &
+                    "and 100.5/10.5 = " & Pairs'Image (P4) );
+   end if;
+
+   H4 := H2 * 2;   --  2**(max_mantissa-6) * 2
+   if H4 /= Halves(2.0 ** (System.Max_Mantissa-5)) then
+      Report.Failed ("2**(System.Max_Mantissa-6) * 2=" & Halves'Image (H4) &
+                     " instead of " &
+                     Halves'Image( Halves(2.0 ** (System.Max_Mantissa-5)))); 
+   end if;
+
+   P4 := Pairs(P1 * 6) / P2;    -- 12 * 6 / -4
+   if (P4 /= -18.0)  then
+      Report.Failed ("12*6/-4 = " & Pairs'Image(P4));
+   end if;
+
+   P4 := Halves(P1 * 6.0) / P2;    -- 12 * 6 / -4
+   if (P4 /= -18.0)  then
+      Report.Failed ("Halves(12*6)/-4 = " & Pairs'Image(P4));
+   end if;
+
+exception
+   when others =>
+      Report.Failed ("unexpected exception in Check_Mixed");
+end Check_Mixed;
+
+
+begin  -- main
+   Report.Test ("CXG2022",
+                "Check the accuracy of multiplication and division" &
+                " of binary fixed point numbers"); 
+   if Verbose then
+      Report.Comment ("starting signed test");
+   end if;
+   Check_Signed;
+
+   if Verbose then
+      Report.Comment ("starting unsigned test");
+   end if;
+   Check_Unsigned;
+
+   if Verbose then
+      Report.Comment ("starting mixed sign test");
+   end if;
+   Check_Mixed;
+
+   Report.Result;
+end CXG2022;