| -- C45532J.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: |
| -- CHECK THAT THE OPERATOR "/" PRODUCES CORRECT RESULTS |
| -- FOR FIXED POINT TYPES USING 3 SUBTESTS. |
| -- THIS TEST REQUIRES MIN_WORD_LENGTH = 32. |
| -- THIS TEST USES VALUES OF DELTA WHICH ARE LESS THAN 0.5. |
| -- |
| -- TEST CASES ARE: |
| -- A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. |
| -- B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. |
| -- C) THE OPERATOR /, USING NO MODEL NUMBERS. |
| -- |
| -- REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48, |
| -- WITH RANGE <, =, AND > THAN 1.0 AND |
| -- WITH DELTA <, =, AND > THAN 1.0. |
| |
| |
| -- HISTORY: |
| -- NTW 09/08/86 CREATED ORIGINAL TEST. |
| -- RJW 11/05/86 REVISED COMMENTS. |
| -- DHH 10/19/87 SHORTENED LINES CONTAINING MORE THAN 72 CHARACTERS. |
| -- RDH 04/27/90 REVISED APPLICABILITY CRITERIA. |
| -- BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR |
| -- LINE. CHANGED EXTENSION FROM '.DEP' TO '.ADA'. |
| |
| WITH REPORT; |
| PROCEDURE C45532J IS |
| |
| USE REPORT; |
| |
| MIN_WORD_LENGTH : CONSTANT := 32; -- MUST BE EVEN & >= 6 |
| FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1); |
| FORTH : CONSTANT := FULL_SCALE / 4; |
| A_THIRD : CONSTANT := FULL_SCALE / 3; |
| DEL1 : CONSTANT := 0.5 / FULL_SCALE; |
| TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. |
| 0.5 - DEL1 * 1; |
| TYPE FX_1 IS DELTA DEL1 * 2 RANGE -1.0 .. |
| 1.0 - DEL1 * 2; |
| TYPE FX_2 IS DELTA DEL1 * 4 RANGE -2.0 .. |
| 2.0 - DEL1 * 4; |
| |
| BEGIN TEST ("C45532J", "FIXED POINT OPERATOR ""/""" ); |
| |
| -------------------------------------------------- |
| |
| -- CASE A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. |
| |
| A: DECLARE |
| A : FX_0P5 := 0.0; |
| B : FX_1 := 0.0; |
| RESULT_VALUE : FX_2 := 0.0; |
| LOWEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5); |
| HIGHEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5); |
| BEGIN |
| IF EQUAL (3, 3) THEN |
| A := FX_0P5 (0.125); -- A MODEL NUMBER |
| B := FX_1 (0.25); -- A MODEL NUMBER |
| END IF; |
| |
| RESULT_VALUE := FX_2 (A / B); |
| |
| IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) |
| OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN |
| FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " |
| & "WHEN A, B, AND A / B ARE ALL MODEL NUMBERS"); |
| END IF; |
| END A; |
| |
| -------------------------------------------------- |
| |
| -- CASE B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. |
| |
| B: DECLARE |
| A : FX_0P5 := 0.0; |
| B : FX_0P5 := 0.0; |
| RESULT_VALUE : FX_1 := 0.0; |
| LOWEST_ACCEPTABLE_VALUE : FX_1 |
| := FX_1 (2 * DEL1 * A_THIRD); |
| HIGHEST_ACCEPTABLE_VALUE : FX_1 |
| := FX_1 (2 * DEL1 * (A_THIRD + 1) ); |
| BEGIN |
| IF EQUAL (3, 3) THEN |
| A := FX_0P5 (DEL1 * 1); -- A MODEL NUMBER |
| B := FX_0P5 (DEL1 * 3); -- A MODEL NUMBER |
| END IF; |
| |
| RESULT_VALUE := FX_1 (A / B); |
| |
| IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) |
| OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN |
| FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " |
| & "WHEN A, B MODEL NUMBERS A / B NOT"); |
| END IF; |
| END B; |
| |
| -------------------------------------------------- |
| |
| -- CASE C) THE OPERATOR /, USING NO MODEL NUMBERS |
| |
| C: DECLARE |
| A : FX_1 := 0.0; |
| B : FX_1 := 0.0; |
| RESULT_VALUE : FX_0P5 := 0.0; |
| LOW_COUNT : CONSTANT := 2 * A_THIRD; |
| -- := (2 * FULL_SCALE * (2 * FORTH + 0)) |
| -- / (6 * FORTH + 2); |
| HIGH_COUNT : CONSTANT := 2 * A_THIRD + 4; |
| -- := (2 * FULL_SCALE * (2 * FORTH + 2)) |
| -- / (6 * FORTH + 0); |
| LOWEST_ACCEPTABLE_VALUE : FX_0P5 |
| := FX_0P5 (DEL1 * LOW_COUNT ); |
| HIGHEST_ACCEPTABLE_VALUE : FX_0P5 |
| := FX_0P5 (DEL1 * HIGH_COUNT ); |
| BEGIN |
| IF EQUAL (3, 3) THEN -- A AND B NOT MODEL NUMBERS |
| A := FX_1 (DEL1 * (2 * FORTH + 1)); |
| B := FX_1 (DEL1 * (6 * FORTH + 1)); |
| END IF; |
| |
| RESULT_VALUE := FX_0P5 (A / B); |
| |
| IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) |
| OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN |
| FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " |
| & "WHEN USING NO MODEL NUMBERS"); |
| END IF; |
| END C; |
| |
| -------------------------------------------------- |
| |
| |
| RESULT; |
| |
| END C45532J; |
