-- CXA5A09.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 Log provides correct results. -- -- TEST DESCRIPTION: -- This test examines both the version of Log resulting from the -- instantiation of the Ada.Numerics.Generic_Elementary_Functions with -- 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) -- CXA5A09.A -- -- -- CHANGE HISTORY: -- 11 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. -- 29 Jun 98 EDS Protected exception tests by first testing -- for 'Machine_Overflows -- --! with Ada.Numerics.Elementary_Functions; with Ada.Numerics.Generic_Elementary_Functions; with FXA5A00; with Report; procedure CXA5A09 is begin Report.Test ("CXA5A09", "Check that the Log 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; Arg, Float_Result : Float := 0.0; New_Float_Result : New_Float := 0.0; Incorrect_Inverse, Incorrect_Inverse_Base_2, Incorrect_Inverse_Base_8, Incorrect_Inverse_Base_10, Incorrect_Inverse_Base_16 : Boolean := False; procedure Dont_Optimize_Float is new Dont_Optimize(Float); procedure Dont_Optimize_New_Float is new Dont_Optimize(New_Float); begin -- Testing of Log Function, both instantiated and pre-instantiated -- version. -- Check that Argument_Error is raised when the parameter X is negative. begin New_Float_Result := GEF.Log(X => -1.0); Report.Failed("Argument_Error not raised by the Log function " & "when the input parameter is negative"); Dont_Optimize_New_Float(New_Float_Result, 1); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "when the input parameter is negative"); end; begin Float_Result := EF.Log(X => -FXA5A00.Large); Report.Failed("Argument_Error not raised by the Log function " & "when the input parameter is negative"); Dont_Optimize_Float(Float_Result, 2); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "when the input parameter is negative"); end; -- Check that Constraint_Error is raised when the Log function is -- provided an input parameter of zero. if New_Float'Machine_Overflows = True then begin New_Float_Result := GEF.Log(X => 0.0); Report.Failed("Constraint_Error not raised by the Log function " & "when the input parameter is zero"); Dont_Optimize_New_Float(New_Float_Result, 3); exception when Constraint_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "when the input parameter is zero"); end; end if; -- Check for the reference manual prescribed results of the Log function. if GEF.Log(X => 1.0) /= 0.0 or EF.Log(X => 1.0) /= 0.0 then Report.Failed("Incorrect result from Function Log when provided " & "an input parameter value of 1.0"); end if; -- Check that the Log function provides correct results when provided -- a variety of input parameters. if not FXA5A00.Result_Within_Range(GEF.Log(0.015), -4.20, 0.01) or not FXA5A00.Result_Within_Range(GEF.Log(0.592), -0.524, 0.001) or not FXA5A00.Result_Within_Range(GEF.Log(0.997), -0.003, 0.001) or not FXA5A00.Result_Within_Range(GEF.Log(1.341), 0.293, 0.001) or not FXA5A00.Result_Within_Range( EF.Log(2.826), 1.04, 0.01) or not FXA5A00.Result_Within_Range( EF.Log(10.052), 2.31, 0.01) or not FXA5A00.Result_Within_Range( EF.Log(2569.143), 7.85, 0.01) then Report.Failed("Incorrect results from Function Log when provided " & "a variety of input parameter values"); end if; Arg := 0.001; while Arg < 1.0 and not Incorrect_Inverse loop if not Result_Within_Range(EF."**"(e,EF.Log(Arg)), Arg, 0.001) then Incorrect_Inverse := True; end if; Arg := Arg + 0.001; end loop; if Incorrect_Inverse then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function over argument range 0.001..1.0"); Incorrect_Inverse := False; end if; Arg := 1.0; while Arg < 10.0 and not Incorrect_Inverse loop if not Result_Within_Range(EF."**"(e,EF.Log(Arg)), Arg, 0.01) then Incorrect_Inverse := True; end if; Arg := Arg + 0.01; end loop; if Incorrect_Inverse then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function over argument range 1.0..10.0"); Incorrect_Inverse := False; end if; Arg := 1.0; while Arg < 1000.0 and not Incorrect_Inverse loop if not Result_Within_Range(EF."**"(e,EF.Log(Arg)), Arg, 0.1) then Incorrect_Inverse := True; end if; Arg := Arg + 1.0; end loop; if Incorrect_Inverse then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function over argument range 1.0..1000.0"); end if; -- Testing of Log Function, with specified Base parameter, both -- instantiated and pre-instantiated versions. -- Check that Argument_Error is raised by the Log function with -- specified Base parameter, when the X parameter value is negative. begin New_Float_Result := GEF.Log(X => -1.0, Base => 16.0); Report.Failed("Argument_Error not raised by the Log function " & "with Base parameter, when the input parameter " & "value is -1.0"); Dont_Optimize_New_Float(New_Float_Result, 4); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "with Base parameter, when the X parameter value " & "is -1.0"); end; begin Float_Result := EF.Log(X => -FXA5A00.Large, Base => 8.0); Report.Failed("Argument_Error not raised by the Log function " & "with Base parameter, when the X parameter " & "value is a large negative value"); Dont_Optimize_Float(Float_Result, 5); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "with Base parameter, when the X parameter " & "value is a large negative value"); end; -- Check that Argument_Error is raised by the Log function when -- the specified Base parameter is zero. begin New_Float_Result := GEF.Log(X => 10.0, Base => 0.0); Report.Failed("Argument_Error not raised by the Log function " & "with Base parameter of 0.0"); Dont_Optimize_New_Float(New_Float_Result, 6); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "with Base parameter of 0.0"); end; -- Check that Argument_Error is raised by the Log function when -- the specified Base parameter is one. begin Float_Result := EF.Log(X => 12.3, Base => 1.0); Report.Failed("Argument_Error not raised by the Log function " & "with Base parameter of 1.0"); Dont_Optimize_Float(Float_Result, 7); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "with Base parameter of 1.0"); end; -- Check that Argument_Error is raised by the Log function when -- the specified Base parameter is negative. begin New_Float_Result := GEF.Log(X => 12.3, Base => -10.0); Report.Failed("Argument_Error not raised by the Log function " & "with negative Base parameter"); Dont_Optimize_New_Float(New_Float_Result, 8); exception when Argument_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by the Log function " & "with negative Base parameter"); end; -- Check that Constraint_Error is raised by the Log function when the -- input X parameter value is 0.0. if New_Float'Machine_Overflows = True then begin New_Float_Result := GEF.Log(X => 0.0, Base => 16.0); Report.Failed("Constraint_Error not raised by the Log function " & "with specified Base parameter, when the value of " & "the parameter X is 0.0"); Dont_Optimize_New_Float(New_Float_Result, 9); exception when Constraint_Error => null; -- OK, expected exception. when others => Report.Failed("Unexpected exception raised by Function Log" & "with specified Base parameter, when the value " & "of the parameter X is 0.0"); end; end if; -- Check for the prescribed results of the Log function with specified -- Base parameter. if GEF.Log(X => 1.0, Base => 16.0) /= 0.0 or EF.Log(X => 1.0, Base => 10.0) /= 0.0 or GEF.Log(1.0, Base => 8.0) /= 0.0 or EF.Log(1.0, 2.0) /= 0.0 then Report.Failed("Incorrect result from Function Log with specified " & "Base parameter when provided an parameter X input " & "value of 1.0"); end if; -- Check that the Log function with specified Base parameter provides -- correct results when provided a variety of input parameters. if not Result_Within_Range(GEF.Log( 10.0, e), 2.30, 0.01) or not Result_Within_Range( EF.Log( 8.0, 2.0), 3.0, 0.01) or not Result_Within_Range(GEF.Log(256.0, 2.0), 8.0, 0.01) or not Result_Within_Range( EF.Log(512.0, 8.0), 3.0, 0.01) or not Result_Within_Range(GEF.Log(0.5649, e), -0.57, 0.01) or not Result_Within_Range( EF.Log(1.7714, e), 0.57, 0.01) or not Result_Within_Range(GEF.Log(0.5718, 10.0), -0.243, 0.001) or not Result_Within_Range( EF.Log(466.25, 10.0), 2.67, 0.01) then Report.Failed("Incorrect results from Function Log with specified " & "Base parameter, when provided a variety of input " & "parameter values"); end if; Arg := 1.0; while Arg < 1000.0 and not (Incorrect_Inverse_Base_2 and Incorrect_Inverse_Base_8 and Incorrect_Inverse_Base_10 and Incorrect_Inverse_Base_16) loop if not FXA5A00.Result_Within_Range(EF."**"(2.0,EF.Log(Arg,2.0)), Arg, 0.001) then Incorrect_Inverse_Base_2 := True; end if; if not FXA5A00.Result_Within_Range(EF."**"(8.0,EF.Log(Arg,8.0)), Arg, 0.001) then Incorrect_Inverse_Base_8 := True; end if; if not FXA5A00.Result_Within_Range(EF."**"(10.0,EF.Log(Arg,10.0)), Arg, 0.001) then Incorrect_Inverse_Base_10 := True; end if; if not FXA5A00.Result_Within_Range(EF."**"(16.0,EF.Log(Arg,16.0)), Arg, 0.001) then Incorrect_Inverse_Base_16 := True; end if; Arg := Arg + 1.0; end loop; if Incorrect_Inverse_Base_2 then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function for Base 2"); end if; if Incorrect_Inverse_Base_8 then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function for Base 8"); end if; if Incorrect_Inverse_Base_10 then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function for Base 10"); end if; if Incorrect_Inverse_Base_16 then Report.Failed("Incorrect inverse result comparing ""**"" and " & "Log function for Base 16"); end if; exception when others => Report.Failed ("Exception raised in Test_Block"); end Test_Block; Report.Result; end CXA5A09;