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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/cxg/cxg2010.a')
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diff --git a/gcc/testsuite/ada/acats/tests/cxg/cxg2010.a b/gcc/testsuite/ada/acats/tests/cxg/cxg2010.a deleted file mode 100644 index 4140a487526..00000000000 --- a/gcc/testsuite/ada/acats/tests/cxg/cxg2010.a +++ /dev/null @@ -1,892 +0,0 @@ --- CXG2010.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 exp function returns --- results that are within the error bound allowed. --- --- TEST DESCRIPTION: --- This test contains three test packages that are almost --- identical. The first two packages differ only in the --- floating point type that is being tested. The first --- and third package differ only in whether the generic --- elementary functions package or the pre-instantiated --- package is used. --- The test package is not generic so that the arguments --- and expected results for some of the test values --- can be expressed as universal real instead of being --- computed at runtime. --- --- 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 and where the Machine_Radix is 2, 4, 8, or 16. --- This test only applies to the Strict Mode for numerical --- accuracy. --- --- --- CHANGE HISTORY: --- 1 Mar 96 SAIC Initial release for 2.1 --- 2 Sep 96 SAIC Improved check routine --- ---! - --- --- References: --- --- Software Manual for the Elementary Functions --- William J. Cody, Jr. and William Waite --- Prentice-Hall, 1980 --- --- CRC Standard Mathematical Tables --- 23rd Edition --- --- Implementation and Testing of Function Software --- W. J. Cody --- Problems and Methodologies in Mathematical Software Production --- editors P. C. Messina and A. Murli --- Lecture Notes in Computer Science Volume 142 --- Springer Verlag, 1982 --- - --- --- Notes on derivation of error bound for exp(p)*exp(-p) --- --- Let a = true value of exp(p) and ac be the computed value. --- Then a = ac(1+e1), where |e1| <= 4*Model_Epsilon. --- Similarly, let b = true value of exp(-p) and bc be the computed value. --- Then b = bc(1+e2), where |e2| <= 4*ME. --- --- The product of x and y is (x*y)(1+e3), where |e3| <= 1.0ME --- --- Hence, the computed ab is [ac(1+e1)*bc(1+e2)](1+e3) = --- (ac*bc)[1 + e1 + e2 + e3 + e1e2 + e1e3 + e2e3 + e1e2e3). --- --- Throwing away the last four tiny terms, we have (ac*bc)(1 + eta), --- --- where |eta| <= (4+4+1)ME = 9.0Model_Epsilon. - -with System; -with Report; -with Ada.Numerics.Generic_Elementary_Functions; -with Ada.Numerics.Elementary_Functions; -procedure CXG2010 is - Verbose : constant Boolean := False; - Max_Samples : constant := 1000; - Accuracy_Error_Reported : Boolean := False; - - package Float_Check is - subtype Real is Float; - procedure Do_Test; - end Float_Check; - - package body Float_Check is - package Elementary_Functions is new - Ada.Numerics.Generic_Elementary_Functions (Real); - function Sqrt (X : Real) return Real renames - Elementary_Functions.Sqrt; - function Exp (X : Real) return Real renames - Elementary_Functions.Exp; - - - -- The following value is a lower bound on the accuracy - -- required. It is normally 0.0 so that the lower bound - -- is computed from Model_Epsilon. However, for tests - -- where the expected result is only known to a certain - -- amount of precision this bound takes on a non-zero - -- value to account for that level of precision. - Error_Low_Bound : Real := 0.0; - - procedure Check (Actual, Expected : Real; - Test_Name : String; - MRE : Real) is - Max_Error : Real; - Rel_Error : Real; - Abs_Error : Real; - begin - -- In the case where the expected result is very small or 0 - -- we compute the maximum error as a multiple of Model_Epsilon - -- instead of Model_Epsilon and Expected. - Rel_Error := MRE * abs Expected * Real'Model_Epsilon; - Abs_Error := MRE * Real'Model_Epsilon; - if Rel_Error > Abs_Error then - Max_Error := Rel_Error; - else - Max_Error := Abs_Error; - end if; - - -- take into account the low bound on the error - if Max_Error < Error_Low_Bound then - Max_Error := Error_Low_Bound; - end if; - - if abs (Actual - Expected) > Max_Error then - Accuracy_Error_Reported := True; - Report.Failed (Test_Name & - " actual: " & Real'Image (Actual) & - " expected: " & Real'Image (Expected) & - " difference: " & Real'Image (Actual - Expected) & - " max err:" & Real'Image (Max_Error) ); - elsif Verbose then - if Actual = Expected then - Report.Comment (Test_Name & " exact result"); - else - Report.Comment (Test_Name & " passed"); - end if; - end if; - end Check; - - - procedure Argument_Range_Check_1 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 1.0 / 16.0; - One_Minus_Exp_Minus_V : constant := 6.058693718652421388E-2; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) - Exp(X) * (1 - Exp(-V); - -- which simplifies to ZX := Exp (X-V); - ZX := ZX - ZX * One_Minus_Exp_Minus_V; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 1"); - when others => - Report.Failed ("exception in argument range check 1"); - end Argument_Range_Check_1; - - - - procedure Argument_Range_Check_2 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 45.0 / 16.0; - -- 1/16 - Exp(45/16) - Coeff : constant := 2.4453321046920570389E-3; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) * 1/16 - Exp(X) * Coeff; - -- where Coeff is 1/16 - Exp(45/16) - -- which simplifies to ZX := Exp (X-V); - ZX := ZX * 0.0625 - ZX * Coeff; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 2"); - when others => - Report.Failed ("exception in argument range check 2"); - end Argument_Range_Check_2; - - - procedure Do_Test is - begin - - --- test 1 --- - declare - Y : Real; - begin - Y := Exp(1.0); - -- normal accuracy requirements - Check (Y, Ada.Numerics.e, "test 1 -- exp(1)", 4.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 1"); - when others => - Report.Failed ("exception in test 1"); - end; - - --- test 2 --- - declare - Y : Real; - begin - Y := Exp(16.0) * Exp(-16.0); - Check (Y, 1.0, "test 2 -- exp(16)*exp(-16)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 2"); - when others => - Report.Failed ("exception in test 2"); - end; - - --- test 3 --- - declare - Y : Real; - begin - Y := Exp (Ada.Numerics.Pi) * Exp (-Ada.Numerics.Pi); - Check (Y, 1.0, "test 3 -- exp(pi)*exp(-pi)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 3"); - when others => - Report.Failed ("exception in test 3"); - end; - - --- test 4 --- - declare - Y : Real; - begin - Y := Exp(0.0); - Check (Y, 1.0, "test 4 -- exp(0.0)", - 0.0); -- no error allowed - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 4"); - when others => - Report.Failed ("exception in test 4"); - end; - - --- test 5 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_1 ( 1.0/Sqrt(Real(Real'Machine_Radix)), - 1.0, - "5"); - Error_Low_Bound := 0.0; -- reset - - --- test 6 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_2 (1.0, - Sqrt(Real(Real'Machine_Radix)), - "6"); - Error_Low_Bound := 0.0; -- reset - - end Do_Test; - end Float_Check; - - ----------------------------------------------------------------------- - ----------------------------------------------------------------------- - -- check the floating point type with the most digits - type A_Long_Float is digits System.Max_Digits; - - - package A_Long_Float_Check is - subtype Real is A_Long_Float; - procedure Do_Test; - end A_Long_Float_Check; - - package body A_Long_Float_Check is - package Elementary_Functions is new - Ada.Numerics.Generic_Elementary_Functions (Real); - function Sqrt (X : Real) return Real renames - Elementary_Functions.Sqrt; - function Exp (X : Real) return Real renames - Elementary_Functions.Exp; - - - -- The following value is a lower bound on the accuracy - -- required. It is normally 0.0 so that the lower bound - -- is computed from Model_Epsilon. However, for tests - -- where the expected result is only known to a certain - -- amount of precision this bound takes on a non-zero - -- value to account for that level of precision. - Error_Low_Bound : Real := 0.0; - - procedure Check (Actual, Expected : Real; - Test_Name : String; - MRE : Real) is - Max_Error : Real; - Rel_Error : Real; - Abs_Error : Real; - begin - -- In the case where the expected result is very small or 0 - -- we compute the maximum error as a multiple of Model_Epsilon - -- instead of Model_Epsilon and Expected. - Rel_Error := MRE * abs Expected * Real'Model_Epsilon; - Abs_Error := MRE * Real'Model_Epsilon; - if Rel_Error > Abs_Error then - Max_Error := Rel_Error; - else - Max_Error := Abs_Error; - end if; - - -- take into account the low bound on the error - if Max_Error < Error_Low_Bound then - Max_Error := Error_Low_Bound; - end if; - - if abs (Actual - Expected) > Max_Error then - Accuracy_Error_Reported := True; - Report.Failed (Test_Name & - " actual: " & Real'Image (Actual) & - " expected: " & Real'Image (Expected) & - " difference: " & Real'Image (Actual - Expected) & - " max err:" & Real'Image (Max_Error) ); - elsif Verbose then - if Actual = Expected then - Report.Comment (Test_Name & " exact result"); - else - Report.Comment (Test_Name & " passed"); - end if; - end if; - end Check; - - - procedure Argument_Range_Check_1 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 1.0 / 16.0; - One_Minus_Exp_Minus_V : constant := 6.058693718652421388E-2; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) - Exp(X) * (1 - Exp(-V); - -- which simplifies to ZX := Exp (X-V); - ZX := ZX - ZX * One_Minus_Exp_Minus_V; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 1"); - when others => - Report.Failed ("exception in argument range check 1"); - end Argument_Range_Check_1; - - - - procedure Argument_Range_Check_2 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 45.0 / 16.0; - -- 1/16 - Exp(45/16) - Coeff : constant := 2.4453321046920570389E-3; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) * 1/16 - Exp(X) * Coeff; - -- where Coeff is 1/16 - Exp(45/16) - -- which simplifies to ZX := Exp (X-V); - ZX := ZX * 0.0625 - ZX * Coeff; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 2"); - when others => - Report.Failed ("exception in argument range check 2"); - end Argument_Range_Check_2; - - - procedure Do_Test is - begin - - --- test 1 --- - declare - Y : Real; - begin - Y := Exp(1.0); - -- normal accuracy requirements - Check (Y, Ada.Numerics.e, "test 1 -- exp(1)", 4.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 1"); - when others => - Report.Failed ("exception in test 1"); - end; - - --- test 2 --- - declare - Y : Real; - begin - Y := Exp(16.0) * Exp(-16.0); - Check (Y, 1.0, "test 2 -- exp(16)*exp(-16)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 2"); - when others => - Report.Failed ("exception in test 2"); - end; - - --- test 3 --- - declare - Y : Real; - begin - Y := Exp (Ada.Numerics.Pi) * Exp (-Ada.Numerics.Pi); - Check (Y, 1.0, "test 3 -- exp(pi)*exp(-pi)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 3"); - when others => - Report.Failed ("exception in test 3"); - end; - - --- test 4 --- - declare - Y : Real; - begin - Y := Exp(0.0); - Check (Y, 1.0, "test 4 -- exp(0.0)", - 0.0); -- no error allowed - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 4"); - when others => - Report.Failed ("exception in test 4"); - end; - - --- test 5 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_1 ( 1.0/Sqrt(Real(Real'Machine_Radix)), - 1.0, - "5"); - Error_Low_Bound := 0.0; -- reset - - --- test 6 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_2 (1.0, - Sqrt(Real(Real'Machine_Radix)), - "6"); - Error_Low_Bound := 0.0; -- reset - - end Do_Test; - end A_Long_Float_Check; - - ----------------------------------------------------------------------- - ----------------------------------------------------------------------- - - package Non_Generic_Check is - procedure Do_Test; - subtype Real is Float; - end Non_Generic_Check; - - package body Non_Generic_Check is - - package Elementary_Functions renames - Ada.Numerics.Elementary_Functions; - function Sqrt (X : Real) return Real renames - Elementary_Functions.Sqrt; - function Exp (X : Real) return Real renames - Elementary_Functions.Exp; - - - -- The following value is a lower bound on the accuracy - -- required. It is normally 0.0 so that the lower bound - -- is computed from Model_Epsilon. However, for tests - -- where the expected result is only known to a certain - -- amount of precision this bound takes on a non-zero - -- value to account for that level of precision. - Error_Low_Bound : Real := 0.0; - - procedure Check (Actual, Expected : Real; - Test_Name : String; - MRE : Real) is - Max_Error : Real; - Rel_Error : Real; - Abs_Error : Real; - begin - -- In the case where the expected result is very small or 0 - -- we compute the maximum error as a multiple of Model_Epsilon - -- instead of Model_Epsilon and Expected. - Rel_Error := MRE * abs Expected * Real'Model_Epsilon; - Abs_Error := MRE * Real'Model_Epsilon; - if Rel_Error > Abs_Error then - Max_Error := Rel_Error; - else - Max_Error := Abs_Error; - end if; - - -- take into account the low bound on the error - if Max_Error < Error_Low_Bound then - Max_Error := Error_Low_Bound; - end if; - - if abs (Actual - Expected) > Max_Error then - Accuracy_Error_Reported := True; - Report.Failed (Test_Name & - " actual: " & Real'Image (Actual) & - " expected: " & Real'Image (Expected) & - " difference: " & Real'Image (Actual - Expected) & - " max err:" & Real'Image (Max_Error) ); - elsif Verbose then - if Actual = Expected then - Report.Comment (Test_Name & " exact result"); - else - Report.Comment (Test_Name & " passed"); - end if; - end if; - end Check; - - - procedure Argument_Range_Check_1 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 1.0 / 16.0; - One_Minus_Exp_Minus_V : constant := 6.058693718652421388E-2; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) - Exp(X) * (1 - Exp(-V); - -- which simplifies to ZX := Exp (X-V); - ZX := ZX - ZX * One_Minus_Exp_Minus_V; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 1"); - when others => - Report.Failed ("exception in argument range check 1"); - end Argument_Range_Check_1; - - - - procedure Argument_Range_Check_2 (A, B : Real; - Test : String) is - -- test a evenly distributed selection of - -- arguments selected from the range A to B. - -- Test using identity: EXP(X-V) = EXP(X) * EXP (-V) - -- The parameter One_Minus_Exp_Minus_V is the value - -- 1.0 - Exp (-V) - -- accurate to machine precision. - -- This procedure is a translation of part of Cody's test - X : Real; - Y : Real; - ZX, ZY : Real; - V : constant := 45.0 / 16.0; - -- 1/16 - Exp(45/16) - Coeff : constant := 2.4453321046920570389E-3; - - begin - Accuracy_Error_Reported := False; - for I in 1..Max_Samples loop - X := (B - A) * Real (I) / Real (Max_Samples) + A; - Y := X - V; - if Y < 0.0 then - X := Y + V; - end if; - - ZX := Exp (X); - ZY := Exp (Y); - - -- ZX := Exp(X) * 1/16 - Exp(X) * Coeff; - -- where Coeff is 1/16 - Exp(45/16) - -- which simplifies to ZX := Exp (X-V); - ZX := ZX * 0.0625 - ZX * Coeff; - - -- note that since the expected value is computed, we - -- must take the error in that computation into account. - Check (ZY, ZX, - "test " & Test & " -" & - Integer'Image (I) & - " exp (" & Real'Image (X) & ")", - 9.0); - exit when Accuracy_Error_Reported; - end loop; - exception - when Constraint_Error => - Report.Failed - ("Constraint_Error raised in argument range check 2"); - when others => - Report.Failed ("exception in argument range check 2"); - end Argument_Range_Check_2; - - - procedure Do_Test is - begin - - --- test 1 --- - declare - Y : Real; - begin - Y := Exp(1.0); - -- normal accuracy requirements - Check (Y, Ada.Numerics.e, "test 1 -- exp(1)", 4.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 1"); - when others => - Report.Failed ("exception in test 1"); - end; - - --- test 2 --- - declare - Y : Real; - begin - Y := Exp(16.0) * Exp(-16.0); - Check (Y, 1.0, "test 2 -- exp(16)*exp(-16)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 2"); - when others => - Report.Failed ("exception in test 2"); - end; - - --- test 3 --- - declare - Y : Real; - begin - Y := Exp (Ada.Numerics.Pi) * Exp (-Ada.Numerics.Pi); - Check (Y, 1.0, "test 3 -- exp(pi)*exp(-pi)", 9.0); - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 3"); - when others => - Report.Failed ("exception in test 3"); - end; - - --- test 4 --- - declare - Y : Real; - begin - Y := Exp(0.0); - Check (Y, 1.0, "test 4 -- exp(0.0)", - 0.0); -- no error allowed - exception - when Constraint_Error => - Report.Failed ("Constraint_Error raised in test 4"); - when others => - Report.Failed ("exception in test 4"); - end; - - --- test 5 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_1 ( 1.0/Sqrt(Real(Real'Machine_Radix)), - 1.0, - "5"); - Error_Low_Bound := 0.0; -- reset - - --- test 6 --- - -- constants used here only have 19 digits of precision - if Real'Digits > 19 then - Error_Low_Bound := 0.00000_00000_00000_0001; - Report.Comment ("exp accuracy checked to 19 digits"); - end if; - - Argument_Range_Check_2 (1.0, - Sqrt(Real(Real'Machine_Radix)), - "6"); - Error_Low_Bound := 0.0; -- reset - - end Do_Test; - end Non_Generic_Check; - - ----------------------------------------------------------------------- - ----------------------------------------------------------------------- - -begin - Report.Test ("CXG2010", - "Check the accuracy of the exp function"); - - -- the test only applies to machines with a radix of 2,4,8, or 16 - case Float'Machine_Radix is - when 2 | 4 | 8 | 16 => null; - when others => - Report.Not_Applicable ("only applicable to binary radix"); - Report.Result; - return; - end case; - - if Verbose then - Report.Comment ("checking Standard.Float"); - end if; - - Float_Check.Do_Test; - - if Verbose then - Report.Comment ("checking a digits" & - Integer'Image (System.Max_Digits) & - " floating point type"); - end if; - - A_Long_Float_Check.Do_Test; - - if Verbose then - Report.Comment ("checking non-generic package"); - end if; - - Non_Generic_Check.Do_Test; - - Report.Result; -end CXG2010; |