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-- C45523A.ADA

--                             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:

--     FOR FLOATING POINT TYPES, IF MACHINE_OVERFLOWS IS TRUE AND

--     EITHER THE RESULT OF MULTIPLICATION LIES OUTSIDE THE RANGE OF THE

--     BASE TYPE, OR AN ATTEMPT IS MADE TO DIVIDE BY ZERO, THEN

--     CONSTRAINT_ERROR IS RAISED.  THIS TESTS

--     DIGITS 5.

-- *** NOTE: This test has been modified since ACVC version 1.11 to    -- 9X

-- ***       remove incompatibilities associated with the transition   -- 9X

-- ***       to Ada 9X.                                                -- 9X

-- ***                                                                 -- 9X

-- HISTORY:

--     BCB 02/09/88  CREATED ORIGINAL TEST.

--     MRM 03/30/93  REMOVED NUMERIC_ERROR FOR 9X COMPATIBILITY

--     KAS 11/14/95  DELETED USAGE OF 'SAFE_LARGE

--     KAS 11/30/95  GOT IT RIGHT THIS TIME

WITH REPORT; USE REPORT;

PROCEDURE C45523A IS

     TYPE FLT IS DIGITS 5;

     F : FLT;

     FUNCTION IDENT_FLT(X : FLT) RETURN FLT IS

     BEGIN

          IF EQUAL(3,3) THEN

               RETURN X;

          ELSE

               RETURN 0.0;

          END IF;

     END IDENT_FLT;

     FUNCTION EQUAL_FLT(ONE, TWO : FLT) RETURN BOOLEAN IS

     BEGIN

          RETURN ONE = TWO * FLT (IDENT_INT(1));

     END EQUAL_FLT;

BEGIN

     TEST ("C45523A", "FOR FLOATING POINT TYPES, IF MACHINE_" &

                      "OVERFLOWS IS TRUE AND EITHER THE RESULT OF " &

                      "MULTIPLICATION LIES OUTSIDE THE RANGE OF THE " &

                      "BASE TYPE, OR AN ATTEMPT IS MADE TO DIVIDE BY " &

                      "ZERO, THEN CONSTRAINT_ERROR IS RAISED." &

                      "THIS TESTS DIGITS 5");

     IF FLT'MACHINE_OVERFLOWS THEN

          BEGIN

               F := (FLT'BASE'LAST) * IDENT_FLT (2.0);

               FAILED ("CONSTRAINT_ERROR WAS NOT RAISED FOR MULTIPLICATION");

               IF EQUAL_FLT(F,F**IDENT_INT(1)) THEN

                    COMMENT ("DON'T OPTIMIZE F");

               END IF;

          EXCEPTION

               WHEN CONSTRAINT_ERROR =>

                    COMMENT ("CONSTRAINT_ERROR WAS RAISED FOR " &

                             "MULTIPLICATION");

               WHEN OTHERS =>

                    FAILED ("AN EXCEPTION OTHER THAN " &

                            "CONSTRAINT_ERROR WAS RAISED FOR " &

                            "MULTIPLICATION");

          END;

          BEGIN

               F := (FLT'LAST) / IDENT_FLT (0.0);

               FAILED ("CONSTRAINT_ERROR WAS NOT RAISED FOR DIVISION BY ZERO");

               IF EQUAL_FLT(F,F**IDENT_INT(1)) THEN

                    COMMENT ("DON'T OPTIMIZE F");

               END IF;

          EXCEPTION

               WHEN CONSTRAINT_ERROR =>

                    COMMENT ("CONSTRAINT_ERROR WAS RAISED FOR " &

                             "DIVISION BY ZERO");

               WHEN OTHERS =>

                    FAILED ("AN EXCEPTION OTHER THAN CONSTRAINT_ERROR " &

                            "WAS RAISED FOR DIVISION BY ZERO");

          END;

     ELSE

          NOT_APPLICABLE ("THIS TEST IS NOT APPLICABLE DUE TO " &

                          "MACHINE_OVERFLOWS BEING FALSE");

     END IF;

     RESULT;

END C45523A;