1-- C45532O.DEP 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 = 48. 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-- APPLICABILITY CRITERIA: 42-- THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A 43-- 'MAX_MANTISSA OF 47 OR GREATER. 44 45-- IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF 46-- 'TYPE FX_OP5' MUST BE REJECTED. 47 48-- HISTORY: 49-- NTW 09/08/86 CREATED ORIGINAL TEST. 50-- RJW 11/05/86 REVISED COMMENTS. 51-- DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER. 52-- RDH 04/27/90 REVISED APPLICABILITY CRITERIA. 53 54WITH REPORT; 55PROCEDURE C45532O IS 56 57 USE REPORT; 58 59 MIN_WORD_LENGTH : CONSTANT := 48; 60 FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1); 61 FORTH : CONSTANT := FULL_SCALE / 4; 62 RNG1 : CONSTANT := FULL_SCALE * 0.5; 63 TYPE FX_0P5 IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5; 64 -- N/A => ERROR. 65 TYPE FX_1 IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0; 66 TYPE FX_RNG1 IS DELTA RNG1 67 RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1); 68 69BEGIN TEST ("C45532O", "FIXED POINT OPERATOR ""*""" ); 70 71 -------------------------------------------------- 72 73 -- CASE A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS. 74 75A: DECLARE 76 A : FX_0P5 := 0.0; 77 B : FX_1 := 0.0; 78 RESULT_VALUE : FX_RNG1 := 0.0; 79 LOWEST_ACCEPTABLE_VALUE 80 : FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4); 81 HIGHEST_ACCEPTABLE_VALUE 82 : FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4); 83 BEGIN 84 IF EQUAL (3, 3) THEN 85 A := FX_0P5 (RNG1 / 2); -- A MODEL NUMBER 86 B := FX_1 (RNG1 / 2); -- A MODEL NUMBER 87 END IF; 88 89 RESULT_VALUE := FX_RNG1 (A * B); 90 91 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 92 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 93 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL " 94 & "WHEN A, B, AND A * B ARE ALL MODEL NUMBERS"); 95 END IF; 96 END A; 97 98 -------------------------------------------------- 99 100 -- CASE B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT. 101 102B: DECLARE 103 A : FX_0P5 := 0.0; 104 B : FX_0P5 := 0.0; 105 RESULT_VALUE : FX_RNG1 := 0.0; 106 LOW_COUNT : CONSTANT := FULL_SCALE / 16; 107 HIGH_COUNT : CONSTANT := LOW_COUNT + 1; 108 LOWEST_ACCEPTABLE_VALUE : FX_RNG1 109 := FX_RNG1 (RNG1 * LOW_COUNT); 110 HIGHEST_ACCEPTABLE_VALUE : FX_RNG1 111 := FX_RNG1 (RNG1 * HIGH_COUNT); 112 BEGIN 113 IF EQUAL (3, 3) THEN 114 A := FX_0P5 (0.5 * (FORTH + 1) ); -- A MODEL NUMBER 115 B := FX_0P5 (0.5 * (FORTH * 2) ); -- A MODEL NUMBER 116 END IF; 117 118 RESULT_VALUE := FX_RNG1 (A * B); 119 120 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 121 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 122 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL " 123 & "WHEN A, B MODEL NUMBERS A * B NOT"); 124 END IF; 125 END B; 126 127 -------------------------------------------------- 128 129 -- CASE C) THE OPERATOR *, USING NO MODEL NUMBERS 130 131C: DECLARE 132 A : FX_1 := 0.0; 133 B : FX_1 := 0.0; 134 RESULT_VALUE : FX_RNG1 := 0.0; 135 LOW_COUNT : CONSTANT := FULL_SCALE / 32 - 1; 136 HIGH_COUNT : CONSTANT := FULL_SCALE / 32 + 1; 137 LOWEST_ACCEPTABLE_VALUE : FX_RNG1 138 := FX_RNG1 (RNG1 * LOW_COUNT); 139 HIGHEST_ACCEPTABLE_VALUE : FX_RNG1 140 := FX_RNG1 (RNG1 * HIGH_COUNT); 141 BEGIN 142 IF EQUAL (3, 3) THEN 143 A := FX_1 (0.5 * (FORTH + 1) ); -- NOT MODEL NUMBER 144 B := FX_1 (0.5 * (FORTH - 1) ); -- NOT MODEL NUMBER 145 END IF; 146 147 RESULT_VALUE := FX_RNG1 (A * B); 148 149 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE) 150 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN 151 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL " 152 & "WHEN USING NO MODEL NUMBERS"); 153 END IF; 154 END C; 155 156 -------------------------------------------------- 157 158 159 RESULT; 160 161END C45532O; 162