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-- C57003A.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 THAT THE EXIT STATEMENT IS EVALUATED EACH TIME THROUGH A LOOP, -- AND THAT IT IS EVALUATED CORRECTLY WHETHER POSITIONED AT THE -- BEGINNING, MIDDLE, OR END OF THE LOOP. -- EACH TEST IS A LOOP ON J WHERE THE EXIT CONDITIONS ARE TO EVALUATE -- TO 'FALSE' A CERTAIN NUMBER OF TIMES UNTIL, AT THE APPROPRIATE -- TIME, ONE OF THEM EVALUATES TO 'TRUE' AND CAUSES THE LOOP TO BE -- EXITED. -- -- -- THE TEST IS PERFORMED 30 TIMES FOR EACH OF THE FIRST TWO -- DATA TYPES CONSIDERED ('INTEGER', USER-DEFINED ENUMERATION) -- AND 26 TIMES FOR 'CHARACTER' (THUS 86 TIMES ALTOGETHER). -- -- -- EACH DATA TYPE HAS ITS OWN SEPARATE SECTION OF CODE. ALL SECTIONS -- FOLLOW THE SAME TESTING ALGORITHM (MUTATIS MUTANDIS). THE CALCU- -- LATIONS WHICH KEEP TRACK OF THE FLOW OF CONTROL ARE ALL DONE IN -- INTEGER ARITHMETIC. THERE ARE THREE DATA TYPES, THUS THREE -- SECTIONS. -- -- -- FOR EACH DATA TYPE, THE 30 TESTS ARE DIVIDED INTO 3 "SEGMENTS" -- -- << NOTE: THE NUMBER OF SEGMENTS IS WRITTEN " 3 " , -- THE NUMBER OF SECTIONS IS WRITTEN "THREE" >> -- -- (OF 10 TESTS EACH, EXCEPT 10,10,6 FOR 'CHARACTER'), NUMBERED -- 0 , 1 , 2 AND CORRESPONDING TO THE 3 SIGNIFICANTLY DIFFERENT -- POSITIONS OF AN EXIT STATEMENT WITH RESPECT TO THE LOOP IT IS IN -- ( "AT THE VERY TOP" , "AT THE VERY BOTTOM" , "ANYWHERE IN BETWEEN" -- ). AT THE BEGINNING OF EACH TEST, THE VARIABLE WHICH_SEGMENT -- IS UPDATED TO CONTAIN THE NEW VALUE OF THIS IDENTIFYING NUMBER -- (FOR THE TEST ABOUT TO BEGIN): -- -- EXIT AT THE TOP ........ WHICH_SEGMENT = 0 -- EXIT FROM THE MIDDLE ........ WHICH_SEGMENT = 1 -- EXIT AT THE BOTTOM ........ WHICH_SEGMENT = 2 . -- -- -- WITHIN EACH SECTION, THE TESTS ARE NUMBERED FROM 1 TO 30 -- (26 FOR 'CHARACTER'). THIS NUMBER IS STORED IN THE INTEGER -- VARIABLE INT_I (EQUAL TO THE CURRENT VALUE OF THE OUTER-LOOP -- INDEX WHEN THAT INDEX IS OF INTEGER TYPE), WHOSE APPROPRIATE VALUE -- FOR EACH TEST IS SET AT THE BEGINNING OF THE TEST. -- -- -- AS PART OF THE EVALUATION PROCESS, THE PROGRAM COMPUTES FOR EACH -- TEST (I.E. FOR EACH VALUE OF I , OR OF INT_I ) THE APPROPRIATE -- NUMBER OF INNER-LOOP ITERATIONS REQUIRED BEFORE EXIT; THIS IS -- THE EXPECTED VALUE OF J (EXPRESSED AS AN INTEGER IN THE RANGE -- 1..10 ) AND STORES IT IN EXPECTED_J . FOR EACH OF THE THREE -- SECTIONS, THE TIME SEQUENCE OF THESE 30 VALUES IS -- -- 1 2 3 4 5 6 7 8 9 10 << SEGMENT 1 >> -- 6 6 7 7 8 8 9 9 10 10 << SEGMENT 2 >> -- 7 8 8 8 9 9 9 10 10 10 << SEGMENT 3 >> -- -- (EACH SECTION GETS ALL 3 ROWS, NOT ONE ROW PER SECTION; -- FOR 'CHARACTER', WHERE ONLY 26 VALUES ARE REQUIRED, THE LAST 4 -- VALUES ARE OMITTED). THIS NUMBER IS COMPARED WITH THE ACTUAL -- VALUE OF J (ACTUAL NUMBER OF INNER-LOOP ITERATIONS BEFORE THE -- EXECUTION OF THE EXIT STATEMENT) AS SAVED JUST BEFORE THE EXIT -- FROM THE LOOP (AGAIN IN THE FORM OF AN INTEGER IN THE RANGE -- 1..30 , IRRESPECTIVE OF THE DATA TYPE BEING TESTED), I F -- SUCH SAVED VALUE IS AVAILABLE. -- -- -- THE ACTUAL VALUE OF INNER-LOOP ITERATIONS (AS SAVED IMMEDIATELY -- BEFORE THE EXIT, AS OPPOSED TO A VALUE LEFT OVER FROM SOME -- PREVIOUS ITERATION) IS AVAILABLE ONLY IF WHICH_SEGMENT /= 0 , -- AND IS THEN STORED IN SAVE_J . -- -- -- FOR THE CASE WHICH_SEGMENT = 0 , THE ITERATIONS ARE COUNTED IN -- THE VARIABLE COUNT , WHOSE VALUE AT THE COMPLETION OF THE -- I-TH TEST ( I IN 1..10 ) MUST BE EQUAL TO EXPECTED_J - 1 , -- AND THUS TO I - 1 (METHODOLOGICALLY AS WELL AS COMPUTATIONALLY -- THIS IS NO DIFFERENT FROM USING THE MOST RECENT VALUE OF SAVE_J -- WHEN A CURRENT ONE CANNOT BE OBTAINED). AFTER BEING INCREMENTED -- BY 1 , COUNT IS CHECKED AGAINST EXPECTED_J . -- -- -- THIS CONCLUDES THE DESCRIPTION OF THE CASE WHICH_SEGMENT = 0 , -- AND THUS OF THE ALGORITHM. THE ONLY REASON FOR SPLITTING THE -- CASE WHICH_SEGMENT /= 0 INTO TWO IS THE DESIRE TO PROVIDE FOR -- DISTINCT MESSAGES. -- RM 04/23/81 -- SPS 3/7/83 WITH REPORT; PROCEDURE C57003A IS USE REPORT ; BEGIN TEST( "C57003A" , "TEST THAT THE EXIT STATEMENT IS EVALUATED" & " EACH TIME THROUGH THE LOOP" ); DECLARE WHICH_SEGMENT : INTEGER RANGE 0..2 ; -- BOUNDS ARE TIGHT SAVE_J : INTEGER RANGE 1..10 ; EXPECTED_J : INTEGER RANGE 1..10 ; COUNT : INTEGER RANGE 0..100 := 0 ; INT_I : INTEGER RANGE 1..30 ; TYPE ENUM IS ( CHANGE_THE_ORIGIN_FROM_0_TO_1 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11, A12, A13, A14, A15, A16, A17, A18, A19, A20 , A21, A22, A23, A24, A25, A26, A27, A28, A29, A30 ); BEGIN -------------------------------------------------------------- ----------------------- INTEGER ---------------------------- FOR I IN INTEGER RANGE 1..30 LOOP WHICH_SEGMENT := ( I - 1 ) / 10 ; EXPECTED_J := ( I + WHICH_SEGMENT ) / ( WHICH_SEGMENT + 1 ) ; COUNT := 0 ; FOR J IN INTEGER RANGE 1..10 LOOP -- J NOT SAVED HERE (SO THAT 'EXIT' BE FIRST STMT) EXIT WHEN WHICH_SEGMENT = 0 AND 1*J >= I ;--COUNT+:=1 ON NXT LINE INSTEAD COUNT := COUNT + 1 ; NULL ; NULL ; NULL ; SAVE_J := J ; EXIT WHEN WHICH_SEGMENT = 1 AND 2*J >= I ; NULL ; NULL ; NULL ; SAVE_J := J ; EXIT WHEN WHICH_SEGMENT = 2 AND 3*J >= I ; END LOOP; COUNT := COUNT + 1 ; -- SEE HEADER CASE WHICH_SEGMENT IS WHEN 0 => IF COUNT /= EXPECTED_J THEN FAILED( "WRONG COUNT; INT, EXIT AT TOP" ); END IF; WHEN 1 => -- WOULD WORK ALSO FOR 0 IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; I,EXIT AT MIDDLE" ); END IF; WHEN 2 => IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; I,EXIT AT BOTTOM" ); END IF; END CASE; END LOOP; -------------------------------------------------------------- ---------------------- CHARACTER --------------------------- FOR I IN CHARACTER RANGE 'A'..'Z' LOOP INT_I := CHARACTER'POS(I) - CHARACTER'POS('A') + 1; WHICH_SEGMENT := ( INT_I - 1 ) / 10 ; EXPECTED_J := ( INT_I + WHICH_SEGMENT ) / ( WHICH_SEGMENT + 1 ) ; COUNT := 0 ; FOR J IN CHARACTER RANGE 'A'..'J' LOOP -- J NOT SAVED HERE (SO THAT 'EXIT' BE FIRST STMT) EXIT WHEN WHICH_SEGMENT = 0 AND J >= I ; -- COUNT+:=1 ON NXT LINE INSTEAD COUNT := COUNT + 1 ; NULL ; NULL ; NULL ; SAVE_J := CHARACTER'POS(J) - CHARACTER'POS('A') + 1; EXIT WHEN WHICH_SEGMENT = 1 AND 2 * SAVE_J >= INT_I ; NULL ; NULL ; NULL ; EXIT WHEN WHICH_SEGMENT = 2 AND 3 * SAVE_J >= INT_I ; END LOOP; COUNT := COUNT + 1 ; CASE WHICH_SEGMENT IS WHEN 0 => IF COUNT /= EXPECTED_J THEN FAILED( "WRONG COUNT;CHAR, EXIT AT TOP" ); END IF; WHEN 1 => -- WOULD WORK ALSO FOR 0 IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; C,EXIT AT MIDDLE" ); END IF; WHEN 2 => IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; C,EXIT AT BOTTOM" ); END IF; END CASE; END LOOP; -------------------------------------------------------------- --------------------- ENUMERATION -------------------------- FOR I IN ENUM RANGE A1..A30 LOOP INT_I := ENUM'POS(I) ; WHICH_SEGMENT := ( INT_I - 1 ) / 10 ; EXPECTED_J := ( INT_I + WHICH_SEGMENT ) / ( WHICH_SEGMENT + 1 ) ; COUNT := 0 ; FOR J IN ENUM RANGE A1..A10 LOOP -- J NOT SAVED HERE (SO THAT 'EXIT' BE FIRST STMT) EXIT WHEN WHICH_SEGMENT = 0 AND J >= I ; -- COUNT+:=1 ON NXT LINE INSTEAD COUNT := COUNT + 1 ; NULL ; NULL ; NULL ; SAVE_J := ENUM'POS(J) ; EXIT WHEN WHICH_SEGMENT = 1 AND 2 * SAVE_J >= INT_I ; NULL ; NULL ; NULL ; EXIT WHEN WHICH_SEGMENT = 2 AND 3 * SAVE_J >= INT_I ; END LOOP; COUNT := COUNT + 1 ; CASE WHICH_SEGMENT IS WHEN 0 => IF COUNT /= EXPECTED_J THEN FAILED( "WRONG COUNT;ENUM, EXIT AT TOP" ); END IF; WHEN 1 => -- WOULD WORK ALSO FOR 0 IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; E,EXIT AT MIDDLE" ); END IF; WHEN 2 => IF SAVE_J /= EXPECTED_J THEN FAILED( "WRONG COUNT; E,EXIT AT BOTTOM" ); END IF; END CASE; END LOOP; -------------------------------------------------------------- END ; RESULT ; END C57003A ;