--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/ada/acats/tests/cxa/cxa5a07.a	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,413 @@
+-- CXA5A07.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 the function Arctan provides correct results.
+--
+-- TEST DESCRIPTION:
+--      This test examines both the version of Arctan resulting from the 
+--      instantiation of the Ada.Numerics.Generic_Elementary_Functions with 
+--      a type derived from type Float, as well as the preinstantiated 
+--      version of this package for type Float.
+--      Prescribed results, including instances prescribed to raise 
+--      exceptions, are examined in the test cases.  In addition, 
+--      certain evaluations are performed where the actual function result 
+--      is compared with the expected result (within an epsilon range of 
+--      accuracy).
+--
+-- TEST FILES:
+--      The following files comprise this test:
+--
+--         FXA5A00.A   (foundation code)
+--         CXA5A07.A
+--
+--
+-- CHANGE HISTORY:
+--      04 Apr 95   SAIC    Initial prerelease version.
+--      13 Jun 95   SAIC    Incorporated use of Dont_Optimize procedure, and
+--                          use of Result_Within_Range function overloaded for
+--                          FXA5A00.New_Float_Type.
+--      28 Feb 97   PWB.CTA Removed checks with explicit Cycle => 2.0*Pi
+--
+-- CHANGE NOTE:
+--      According to Ken Dritz, author of the Numerics Annex of the RM,
+--      one should never specify the cycle 2.0*Pi for the trigonometric
+--      functions.  In particular, if the machine number for the first
+--      argument is not an exact multiple of the machine number for the
+--      explicit cycle, then the specified exact results cannot be
+--      reasonably expected.  The affected checks in this test have been
+--      marked as comments, with the additional notation "pwb-math".
+--      Phil Brashear
+--!
+
+with Ada.Numerics.Elementary_Functions;
+with Ada.Numerics.Generic_Elementary_Functions;
+with FXA5A00;
+with Report;
+
+procedure CXA5A07 is
+begin
+
+   Report.Test ("CXA5A07", "Check that the Arctan function provides " &
+                           "correct results");
+
+   Test_Block:
+   declare
+
+      use Ada.Numerics;
+      use FXA5A00;
+
+      package GEF is new Ada.Numerics.Generic_Elementary_Functions(New_Float);
+      package  EF renames Ada.Numerics.Elementary_Functions;
+
+      Float_Result     : Float;
+      New_Float_Result : New_Float;
+
+      procedure Dont_Optimize_Float     is new Dont_Optimize(Float);
+      procedure Dont_Optimize_New_Float is new Dont_Optimize(New_Float);
+
+   begin
+
+      -- Testing of Arctan Function, both instantiated and pre-instantiated
+      -- version.
+
+      -- Check that Argument_Error is raised by the Arctan function when
+      -- provided parameter values of 0.0, 0.0.
+
+      begin
+         New_Float_Result := GEF.Arctan(Y => 0.0, X => 0.0);
+         Report.Failed("Argument_Error not raised when the Arctan " &
+                       "function is provided input of 0.0, 0.0");
+         Dont_Optimize_New_Float(New_Float_Result, 1);
+      exception
+         when Argument_Error => null;  -- OK, expected exception.
+         when others         =>
+            Report.Failed("Incorrect exception raised by the Arctan " &
+                          "function when provided 0.0, 0.0 input parameters");
+      end;
+
+
+      -- Check that no exception is raised by the Arctan function when
+      -- provided a large positive or negative Y parameter value, when 
+      -- using the default value for parameter X.
+
+      begin
+         Float_Result := EF.Arctan(Y => FXA5A00.Large);
+         Dont_Optimize_Float(Float_Result, 2);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a large positive Y parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(Y => New_Float(-FXA5A00.Large));
+         Dont_Optimize_New_Float(New_Float_Result, 3);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a large negative Y parameter value");
+      end;
+
+
+      -- Check that no exception is raised by the Arctan function when
+      -- provided a small positive or negative Y parameter value, when
+      -- using the default value for parameter X.
+
+      begin
+         Float_Result := EF.Arctan(Y => FXA5A00.Small);
+         Dont_Optimize_Float(Float_Result, 4);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a small positive Y parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(Y => New_Float(-FXA5A00.Small));
+         Dont_Optimize_New_Float(New_Float_Result, 5);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a small negative Y parameter value");
+      end;
+
+
+      -- Check that no exception is raised by the Arctan function when
+      -- provided combinations of large and small positive or negative 
+      -- parameter values for both Y and X input parameters. 
+
+      begin
+         Float_Result := EF.Arctan(Y => FXA5A00.Large, X => FXA5A00.Large);
+         Dont_Optimize_Float(Float_Result, 6);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided large positive X and Y parameter values");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(New_Float(-FXA5A00.Large), 
+                                        X => New_Float(FXA5A00.Small));
+         Dont_Optimize_New_Float(New_Float_Result, 7);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a large negative Y parameter value "  &
+                          "and a small positive X parameter value");
+      end;
+
+
+      begin
+         Float_Result := EF.Arctan(Y => FXA5A00.Small, X => FXA5A00.Large);
+         Dont_Optimize_Float(Float_Result, 8);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a small positive Y parameter value "  &
+                          "and a large positive X parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(New_Float(-FXA5A00.Small), 
+                                        New_Float(-FXA5A00.Large));
+         Dont_Optimize_New_Float(New_Float_Result, 9);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function is " &
+                          "provided a small negative Y parameter value "  &
+                          "and a large negative parameter value");
+      end;
+
+
+      -- Check that when the Arctan function is provided a Y parameter value
+      -- of 0.0 and a positive X parameter input value, the prescribed result
+      -- of zero is returned.
+
+      if GEF.Arctan(Y => 0.0)                     /= 0.0 or -- Default X value
+          EF.Arctan(Y => 0.0, X => FXA5A00.Large) /= 0.0 or
+--pwb-math: Next line: changed 2.0*Pi to 360.0
+         GEF.Arctan(0.0, 360.0)                  /= 0.0 or
+          EF.Arctan(0.0, FXA5A00.Small)           /= 0.0
+      then 
+         Report.Failed("Incorrect results from the Arctan function when " &
+                       "provided a Y parameter value of 0.0 and various " &
+                       "positive X parameter values");
+      end if;
+
+
+      -- Check that the Arctan function provides correct results when provided
+      -- a variety of Y parameter values.  
+
+      if not FXA5A00.Result_Within_Range(EF.Arctan(Pi),    1.26,  0.01)  or
+         not FXA5A00.Result_Within_Range(EF.Arctan(-Pi),  -1.26,  0.01)  or
+         not FXA5A00.Result_Within_Range(GEF.Arctan(1.0),  0.785, 0.001) or
+         not FXA5A00.Result_Within_Range(EF.Arctan(-1.0), -0.785, 0.001) or
+         not FXA5A00.Result_Within_Range(GEF.Arctan(0.25), 0.245, 0.001) or
+         not FXA5A00.Result_Within_Range(EF.Arctan(0.92),  0.744, 0.001) 
+      then
+         Report.Failed("Incorrect results from the Arctan function when " &
+                       "provided a variety of Y parameter values");
+      end if;
+
+
+
+      -- Check the results of the Arctan function with specified cycle
+      -- parameter.
+
+      -- Check that the Arctan function with specified Cycle parameter 
+      -- raises Argument_Error when the value of the Cycle parameter is zero
+      -- or negative.
+
+      begin
+         Float_Result := EF.Arctan(Y => Pi, Cycle => 0.0);  -- Default X value
+         Report.Failed("Argument_Error not raised by the Arctan function " &
+                       "with default X parameter value, when the Cycle "   &
+                       "parameter is 0.0");
+         Dont_Optimize_Float(Float_Result, 10);
+      exception
+         when Argument_Error => null;  -- OK, expected exception.
+         when others         =>
+            Report.Failed("Incorrect exception raised by the Arctan "      &
+                          "function with default X parameter value, when " &
+                          "provided a 0.0 cycle parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(Y => Pi, X => 1.0, Cycle => 0.0);
+         Report.Failed("Argument_Error not raised by the Arctan function " &
+                       "when the Cycle parameter is 0.0");
+         Dont_Optimize_New_Float(New_Float_Result, 11);
+      exception
+         when Argument_Error => null;  -- OK, expected exception.
+         when others         =>
+            Report.Failed("Incorrect exception raised by the Arctan "     &
+                          "function when provided a 0.0 cycle parameter " &
+                          "value");
+      end;
+
+      begin
+         Float_Result := EF.Arctan(Y => Pi, Cycle => -360.0); 
+         Report.Failed("Argument_Error not raised by the Arctan function " &
+                       "with a default X parameter value, when the Cycle " &
+                       "parameter is -360.0");
+         Dont_Optimize_Float(Float_Result, 12);
+      exception
+         when Argument_Error => null;  -- OK, expected exception.
+         when others         =>
+            Report.Failed("Incorrect exception raised by the Arctan "        &
+                          "function with a default X parameter value, when " & 
+                          "provided a -360.0 cycle parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(Y => Pi, X => 1.0, Cycle => -Pi);
+         Report.Failed("Argument_Error not raised by the Arctan function " &
+                       "when the Cycle parameter is -Pi");
+         Dont_Optimize_New_Float(New_Float_Result, 13);
+      exception
+         when Argument_Error => null;  -- OK, expected exception.
+         when others         =>
+            Report.Failed("Incorrect exception raised by the Arctan "     &
+                          "function when provided a -Pi cycle parameter " &
+                          "value");
+      end;
+
+
+      -- Check that no exception is raised by the Arctan function with 
+      -- specified Cycle parameter, when provided large and small positive
+      -- or negative parameter values for both Y and X input parameters. 
+
+      begin
+         Float_Result := EF.Arctan(Y     => -FXA5A00.Large, 
+                                   X     => -FXA5A00.Large,
+--pwb-math: Next line: changed 2.0*Pi to 360.0
+                                   Cycle => 360.0);
+         Dont_Optimize_Float(Float_Result, 14);
+      exception
+         when others =>  
+            Report.Failed("Exception raised when the Arctan function with " &
+                          "specified Cycle parameter, when provided large " & 
+                          "negative X and Y parameter values");
+      end;
+
+
+      begin
+         New_Float_Result := GEF.Arctan(New_Float(FXA5A00.Large), 
+                                        X     => New_Float(-FXA5A00.Small),
+--pwb-math: Next line: changed 2.0*Pi to 360.0
+                                        Cycle => 360.0);
+         Dont_Optimize_New_Float(New_Float_Result, 15);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function with "  &
+                          "specified Cycle parameter, when provided large "  & 
+                          "positive Y parameter value and a small negative " &
+                          "X parameter value");
+      end;
+
+
+      begin
+         Float_Result := EF.Arctan(Y     => -FXA5A00.Small, 
+                                   X     => -FXA5A00.Large,
+--pwb-math: Next line: changed 2.0*Pi to 360.0
+                                   Cycle => 360.0);
+         Dont_Optimize_Float(Float_Result, 16);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function with "  &
+                          "specified Cycle parameter, when provided large "  & 
+                          "negative Y parameter value and a large negative " &
+                          "X parameter value");
+      end;
+
+      begin
+         New_Float_Result := GEF.Arctan(New_Float(FXA5A00.Small), 
+                                        New_Float(FXA5A00.Large), 
+--pwb-math: Next line: changed 2.0*Pi to 360.0
+                                        360.0);
+         Dont_Optimize_New_Float(New_Float_Result, 17);
+      exception
+         when others => 
+            Report.Failed("Exception raised when the Arctan function with " &
+                          "specified Cycle parameter, when provided a "     & 
+                          "small negative Y parameter value and a large "   &
+                          "positive X parameter value");
+      end;
+
+
+      -- Check that the Arctan function with specified Cycle parameter 
+      -- provides correct results when provided a variety of Y parameter
+      -- input values.
+
+--pwb-math      if not FXA5A00.Result_Within_Range(EF.Arctan(Pi,    Cycle => 2.0*Pi),
+--pwb-math                                         1.26, 
+--pwb-math                                         0.01)                            or
+--pwb-math         not FXA5A00.Result_Within_Range(EF.Arctan(-Pi,   Cycle => 2.0*Pi),
+--pwb-math                                         -1.26,
+--pwb-math                                         0.01)                            or
+--pwb-math         not FXA5A00.Result_Within_Range(GEF.Arctan(1.0,  Cycle => 2.0*Pi),
+--pwb-math                                         0.785,
+--pwb-math                                         0.001)                           or
+--pwb-math         not FXA5A00.Result_Within_Range(EF.Arctan(-1.0,  Cycle => 2.0*Pi),
+--pwb-math                                         -0.785, 
+--pwb-math                                         0.001)                           or
+--pwb-math         not FXA5A00.Result_Within_Range(GEF.Arctan(0.16, Cycle => 2.0*Pi),
+--pwb-math                                         0.159,
+--pwb-math                                         0.001)                           or
+--pwb-math         not FXA5A00.Result_Within_Range(EF.Arctan(1.0,   Cycle => 360.0),
+--pwb-math                                         45.0,
+--pwb-math                                         0.1)                             or
+--pwb-math         not FXA5A00.Result_Within_Range(GEF.Arctan(1.0,  Cycle => 100.0),
+--pwb-math                                         12.5,
+--pwb-math                                         0.1) 
+
+--pwb-math  Next 12 lines are replacements for 21 commented lines above
+      if not FXA5A00.Result_Within_Range(GEF.Arctan(1.0,  Cycle => 2.0*180.0),
+                                         45.0,
+                                         0.001)                           or
+         not FXA5A00.Result_Within_Range(EF.Arctan(-1.0,  Cycle => 2.0*180.0),
+                                         -45.0, 
+                                         0.001)                           or
+         not FXA5A00.Result_Within_Range(EF.Arctan(1.0,   Cycle => 360.0),
+                                         45.0,
+                                         0.1)                             or
+         not FXA5A00.Result_Within_Range(GEF.Arctan(1.0,  Cycle => 100.0),
+                                         12.5,
+                                         0.1) 
+      then
+         Report.Failed("Incorrect results from the Arctan function with "   &
+                       "specified Cycle parameter when provided a variety " &
+                       "of Y parameter values");
+      end if;
+
+
+   exception
+      when others => Report.Failed ("Exception raised in Test_Block");
+   end Test_Block;
+
+   Report.Result;
+
+end CXA5A07;