1-- C45532B.ADA 2 3-- Grant of Unlimited Rights 4-- 5-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, 6-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 7-- unlimited rights in the software and documentation contained herein. 8-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making 9-- this public release, the Government intends to confer upon all 10-- recipients unlimited rights equal to those held by the Government. 11-- These rights include rights to use, duplicate, release or disclose the 12-- released technical data and computer software in whole or in part, in 13-- any manner and for any purpose whatsoever, and to have or permit others 14-- to do so. 15-- 16-- DISCLAIMER 17-- 18-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR 19-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 20-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE 21-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 22-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A 23-- PARTICULAR PURPOSE OF SAID MATERIAL. 24--* 25-- OBJECTIVE: 26-- CHECK THAT THE OPERATOR "/" PRODUCES CORRECT RESULTS 27-- FOR FIXED POINT TYPES USING 3 SUBTESTS. 28-- THIS TEST REQUIRES MIN_WORD_LENGTH = 12. 29-- THIS TEST USES VALUES OF DELTA WHICH ARE LESS THAN 0.5. 30-- 31-- TEST CASES ARE: 32-- A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. 33-- B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. 34-- C) THE OPERATOR /, USING NO MODEL NUMBERS. 35-- 36-- REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48, 37-- WITH RANGE <, =, AND > THAN 1.0 AND 38-- WITH DELTA <, =, AND > THAN 1.0. 39 40 41-- HISTORY: 42-- NTW 09/08/86 CREATED ORIGINAL TEST. 43-- RJW 11/05/86 REVISED COMMENTS. 44-- DHH 10/20/87 SHORTENED LINES CONTAINING MORE THAN 72 CHARACTERS. 45-- RDH 04/27/90 REVISED APPLICABILITY CRITERIA. 46-- BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR 47-- LINE. CHANGED EXTENSION FROM '.DEP' TO '.ADA'. 48 49WITH REPORT; 50PROCEDURE C45532B IS 51 52 USE REPORT; 53 54 MIN_WORD_LENGTH : CONSTANT := 12; -- MUST BE EVEN & >= 6 55 FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1); 56 FORTH : CONSTANT := FULL_SCALE / 4; 57 A_THIRD : CONSTANT := FULL_SCALE / 3; 58 DEL1 : CONSTANT := 0.5 / FULL_SCALE; 59 TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. 60 0.5 - DEL1 * 1; 61 TYPE FX_1 IS DELTA DEL1 * 2 RANGE -1.0 .. 62 1.0 - DEL1 * 2; 63 TYPE FX_2 IS DELTA DEL1 * 4 RANGE -2.0 .. 64 2.0 - DEL1 * 4; 65 66BEGIN TEST ("C45532B", "FIXED POINT OPERATOR ""/"" " 67 & "FOR RANGE <, =, AND > 1.0"); 68 69 -------------------------------------------------- 70 71 -- CASE A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. 72 73A: DECLARE 74 A : FX_0P5 := 0.0; 75 B : FX_1 := 0.0; 76 RESULT_VALUE : FX_2 := 0.0; 77 LOWEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5); 78 HIGHEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5); 79 BEGIN 80 IF EQUAL (3, 3) THEN 81 A := FX_0P5 (0.125); -- A MODEL NUMBER 82 B := FX_1 (0.25); -- A MODEL NUMBER 83 END IF; 84 85 RESULT_VALUE := FX_2 (A / B); 86 87 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 88 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 89 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 90 & "WHEN A, B, AND A / B ARE ALL MODEL NUMBERS"); 91 END IF; 92 END A; 93 94 -------------------------------------------------- 95 96 -- CASE B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. 97 98B: DECLARE 99 A : FX_0P5 := 0.0; 100 B : FX_0P5 := 0.0; 101 RESULT_VALUE : FX_1 := 0.0; 102 LOWEST_ACCEPTABLE_VALUE : FX_1 103 := FX_1 (2 * DEL1 * A_THIRD); 104 HIGHEST_ACCEPTABLE_VALUE : FX_1 105 := FX_1 (2 * DEL1 * (A_THIRD + 1) ); 106 BEGIN 107 IF EQUAL (3, 3) THEN 108 A := FX_0P5 (DEL1 * 1); -- A MODEL NUMBER 109 B := FX_0P5 (DEL1 * 3); -- A MODEL NUMBER 110 END IF; 111 112 RESULT_VALUE := FX_1 (A / B); 113 114 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 115 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 116 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 117 & "WHEN A, B MODEL NUMBERS A / B NOT"); 118 END IF; 119 END B; 120 121 -------------------------------------------------- 122 123 -- CASE C) THE OPERATOR /, USING NO MODEL NUMBERS 124 125C: DECLARE 126 A : FX_1 := 0.0; 127 B : FX_1 := 0.0; 128 RESULT_VALUE : FX_0P5 := 0.0; 129 LOW_COUNT : CONSTANT := 2 * A_THIRD; 130 -- := (2 * FULL_SCALE * (2 * FORTH + 0)) 131 -- / (6 * FORTH + 2); 132 HIGH_COUNT : CONSTANT := 2 * A_THIRD + 4; 133 -- := (2 * FULL_SCALE * (2 * FORTH + 2)) 134 -- / (6 * FORTH + 0); 135 LOWEST_ACCEPTABLE_VALUE : FX_0P5 136 := FX_0P5 (DEL1 * LOW_COUNT ); 137 HIGHEST_ACCEPTABLE_VALUE : FX_0P5 138 := FX_0P5 (DEL1 * HIGH_COUNT ); 139 BEGIN 140 IF EQUAL (3, 3) THEN -- A AND B NOT MODEL NUMBERS 141 A := FX_1 (DEL1 * (2 * FORTH + 1)); 142 B := FX_1 (DEL1 * (6 * FORTH + 1)); 143 END IF; 144 145 RESULT_VALUE := FX_0P5 (A / B); 146 147 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 148 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 149 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 150 & "WHEN USING NO MODEL NUMBERS"); 151 END IF; 152 END C; 153 154 -------------------------------------------------- 155 156 157 RESULT; 158 159END C45532B; 160