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-- C96005A.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.

--*

-- CHECK THE CORRECTNESS OF THE ADDITION AND SUBTRACTION FUNCTIONS IN

-- THE PREDEFINED PACKAGE CALENDAR, AND APPROPRIATE EXCEPTION HANDLING.

-- SPECIFICALLY,

--   (A) CHECK THAT ADDITION AND SUBTRACTION OPERATORS WORK CORRECTLY ON

--       VALUES OF TYPE TIME.

-- CPP 8/16/84

WITH CALENDAR;  USE CALENDAR;

WITH REPORT;  USE REPORT;

-- WITH TEXT_IO;  USE TEXT_IO;

PROCEDURE C96005A IS

     -- PACKAGE DURATION_IO IS NEW FIXED_IO (DURATION);

     -- USE DURATION_IO;

BEGIN

     TEST ("C96005A", "CHECK THAT THE ADDITION AND SUBTRACTION " &

           "FUNCTIONS FOR VALUES OF TYPE TIME WORK CORRECTLY");

     -----------------------------------------------

     BEGIN     -- (A)

          -- ADDITION TESTS FOLLOW.

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 0.0);

               NEW_TIME := NOW + INCREMENT;

               IF NEW_TIME /= TIME_OF (1984, 8, 13, 1.0) THEN

                    FAILED ("SUM OF TIMES IS INCORRECT - (A)1");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 0.0);

               NEW_TIME :=  INCREMENT + NOW;

               IF NEW_TIME /= TIME_OF (1984, 8, 13, 1.0) THEN

                    FAILED ("SUM OF TIMES IS INCORRECT - (A)2");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 0.0);

               NEW_TIME := "+"(INCREMENT, NOW);

               IF NEW_TIME /= TIME_OF (1984, 8, 13, 1.0) THEN

                    FAILED ("SUM OF TIMES IS INCORRECT - (A)3");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 0.0);

               NEW_TIME := "+"(LEFT => NOW,

                               RIGHT => INCREMENT);

               IF NEW_TIME /= TIME_OF (1984, 8, 13, 1.0) THEN

                    FAILED ("SUM OF TIMES IS INCORRECT - (A)4");

               END IF;

          END;

          -- SUBTRACTION TESTS FOLLOW.

          DECLARE

               NOW, ONCE : TIME;

               DIFFERENCE : DURATION;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 45_000.0);

               ONCE := TIME_OF (1984, 8, 12, 45_000.0);

               DIFFERENCE := NOW - ONCE;

               IF DIFFERENCE /= 86_400.0 THEN

                    FAILED ("DIFFERENCE OF TIMES IS INCORRECT - (A)1");

                    -- COMMENT ("DIFFERENCE YIELDS: ");

                    -- PUT (DIFFERENCE);

               END IF;

          END;

          DECLARE

          -- TIMES IN DIFFERENT MONTHS.

               NOW, ONCE : TIME;

               DIFFERENCE : DURATION;

          BEGIN

               NOW := TIME_OF (1984, 8, IDENT_INT(1), 60.0);

               ONCE := TIME_OF (1984, 7, 31, 86_399.0);

               DIFFERENCE := "-"(NOW, ONCE);

               IF DIFFERENCE /= 61.0 THEN

                    FAILED ("DIFFERENCE OF TIMES IS INCORRECT - (A)2");

                    -- COMMENT ("DIFFERENCE YIELDS: ");

                    -- PUT (DIFFERENCE);

               END IF;

          END;

          DECLARE

          -- TIMES IN DIFFERENT YEARS.

               NOW, AFTER : TIME;

               DIFFERENCE : DURATION;

          BEGIN

               NOW := TIME_OF (IDENT_INT(1999), 12, 31, 86_399.0);

               AFTER := TIME_OF (2000, 1, 1, 1.0);

               DIFFERENCE := "-"(LEFT => AFTER,

                                 RIGHT => NOW);

               IF DIFFERENCE /= 2.0 THEN

                    FAILED ("DIFFERENCE OF TIMES IS INCORRECT - (A)3");

                    -- COMMENT ("DIFFERENCE YIELDS: ");

                    -- PUT (DIFFERENCE);

               END IF;

          END;

          DECLARE

          -- TIMES IN A LEAP YEAR.

               NOW, LEAP : TIME;

               DIFFERENCE : DURATION;

          BEGIN

               NOW := TIME_OF (1984, 3, 1);

               LEAP := TIME_OF (1984, 2, 29, 86_399.0);

               DIFFERENCE := NOW - LEAP;

               IF DIFFERENCE /= 1.0 THEN

                    FAILED ("DIFFERENCE OF TIMES IS INCORRECT - (A)4");

                    -- COMMENT ("DIFFERENCE YIELDS: ");

                    -- PUT (DIFFERENCE);

               END IF;

          END;

          DECLARE

          -- TIMES IN A NON-LEAP YEAR.

               NOW, NON_LEAP : TIME;

               DIFFERENCE : DURATION;

          BEGIN

               NOW := TIME_OF (1983, 3, 1);

               NON_LEAP := TIME_OF (1983, 2, 28, 86_399.0);

               DIFFERENCE := NOW - NON_LEAP;

               IF DIFFERENCE /= 1.0 THEN

                    FAILED ("DIFFERENCE OF TIMES IS INCORRECT - (A)5");

                    -- COMMENT ("DIFFERENCE YIELDS: ");

                    -- PUT (DIFFERENCE);

               END IF;

          END;

          -- SUBTRACTION TESTS FOLLOW: TIME - DURATION.

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 13, 0.0);

               NEW_TIME := NOW - INCREMENT;

               IF NEW_TIME /= TIME_OF (1984, 8, 12, 86_399.0) THEN

                    FAILED ("DIFFERENCE OF TIME AND DURATION IS " &

                            "INCORRECT - (A)6");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 1, 0.0);

               NEW_TIME := NOW - INCREMENT;

               IF NEW_TIME /= TIME_OF (1984, 7, 31, 86_399.0) THEN

                    FAILED ("DIFFERENCE OF TIME AND DURATION IS " &

                            "INCORRECT - (A)7");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 1, 0.0);

               NEW_TIME := "-"(LEFT => NOW,

                               RIGHT => INCREMENT);

               IF NEW_TIME /= TIME_OF (1984, 7, 31, 86_399.0) THEN

                    FAILED ("DIFFERENCE OF TIME AND DURATION IS " &

                            "INCORRECT - (A)8");

               END IF;

          END;

          DECLARE

               NOW, NEW_TIME : TIME;

               INCREMENT : DURATION := 1.0;

          BEGIN

               NOW := TIME_OF (1984, 8, 1, 0.0);

               NEW_TIME := "-"(NOW, INCREMENT);

               IF NEW_TIME /= TIME_OF (1984, 7, 31, 86_399.0) THEN

                    FAILED ("DIFFERENCE OF TIME AND DURATION IS " &

                            "INCORRECT - (A)7");

               END IF;

          END;

     END; -- (A)

     -----------------------------------------------

     RESULT;

END C96005A;