1-- C45532H.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 = 16. 29-- THIS TEST USES VALUES OF DELTA WHICH ARE GREATER THAN OR 30-- EQUAL TO 0.5. 31-- 32-- TEST CASES ARE: 33-- A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. 34-- B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. 35-- C) THE OPERATOR /, USING NO MODEL NUMBERS. 36-- 37-- REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48, 38-- WITH RANGE <, =, AND > THAN 1.0 AND 39-- WITH DELTA <, =, AND > THAN 1.0. 40 41-- HISTORY: 42-- NTW 09/08/86 CREATED ORIGINAL TEST. 43-- RJW 11/05/86 REVISED COMMENTS. 44-- DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER. 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 C45532H IS 51 52 USE REPORT; 53 54 MIN_WORD_LENGTH : CONSTANT := 16; 55 FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1); 56 A_THIRD : CONSTANT := FULL_SCALE / 3; 57 RNG1 : CONSTANT := FULL_SCALE * 0.5; 58 TYPE FX_0P5 IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5; 59 TYPE FX_1 IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0; 60 TYPE FX_RNG1 IS DELTA RNG1 61 RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1); 62 63BEGIN TEST ("C45532H", "FIXED POINT OPERATOR ""/""" ); 64 65 -------------------------------------------------- 66 67 -- CASE A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS. 68 69A: DECLARE 70 A : FX_RNG1 := 0.0; 71 B : FX_0P5 := 0.0; 72 RESULT_VALUE : FX_0P5 := 0.0; 73 LOWEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (RNG1 / 2); 74 HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (RNG1 / 2); 75 BEGIN 76 IF EQUAL (3, 3) THEN 77 A := FX_RNG1 (RNG1 * RNG1 / 4); -- A MODEL NUMBER 78 B := FX_0P5 (RNG1 / 2); -- A MODEL NUMBER 79 END IF; 80 81 RESULT_VALUE := FX_0P5 (A / B); 82 83 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 84 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 85 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 86 & "WHEN A, B, AND A / B ARE ALL MODEL NUMBERS"); 87 END IF; 88 END A; 89 90 -------------------------------------------------- 91 92 -- CASE B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT. 93 94B: DECLARE 95 A : FX_RNG1 := 0.0; 96 B : FX_1 := 0.0; 97 RESULT_VALUE : FX_0P5 := 0.0; 98 LOWEST_ACCEPTABLE_VALUE : FX_0P5 99 := FX_0P5 (0.5 * A_THIRD); 100 HIGHEST_ACCEPTABLE_VALUE : FX_0P5 101 := FX_0P5 (0.5 * (A_THIRD + 1) ); 102 BEGIN 103 IF EQUAL (3, 3) THEN 104 A := FX_RNG1 (RNG1); -- A MODEL NUMBER 105 B := FX_1 (3.0); -- A MODEL NUMBER 106 END IF; 107 108 RESULT_VALUE := FX_0P5 (A / B); 109 110 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 111 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 112 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 113 & "WHEN A, B MODEL NUMBERS A / B NOT"); 114 END IF; 115 END B; 116 117 -------------------------------------------------- 118 119 -- CASE C) THE OPERATOR /, USING NO MODEL NUMBERS 120 121C: DECLARE 122 A : FX_RNG1 := 0.0; 123 B : FX_1 := 0.0; 124 RESULT_VALUE : FX_1 := 0.0; 125 LOWEST_ACCEPTABLE_VALUE : FX_1 126 := FX_1 ( RNG1 - 3.0); 127 HIGHEST_ACCEPTABLE_VALUE : FX_1 128 := FX_1 ( RNG1 + 4.0); 129 BEGIN 130 IF EQUAL (3, 3) THEN 131 A := FX_RNG1 (RNG1 * RNG1 / 3); -- NOT A MODEL NUMBER 132 B := FX_1 (RNG1 / 3); -- NOT A MODEL NUMBER 133 END IF; 134 135 RESULT_VALUE := FX_1 (A / B); 136 137 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 138 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 139 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL " 140 & "WHEN USING NO MODEL NUMBERS"); 141 END IF; 142 END C; 143 144 -------------------------------------------------- 145 146 147 RESULT; 148 149END C45532H; 150