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111
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1 -- C45532A.ADA
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2
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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7 -- unlimited rights in the software and documentation contained herein.
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8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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9 -- this public release, the Government intends to confer upon all
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10 -- recipients unlimited rights equal to those held by the Government.
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11 -- These rights include rights to use, duplicate, release or disclose the
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12 -- released technical data and computer software in whole or in part, in
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13 -- any manner and for any purpose whatsoever, and to have or permit others
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14 -- to do so.
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15 --
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16 -- DISCLAIMER
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17 --
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18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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24 --*
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25 -- OBJECTIVE:
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26 -- CHECK THAT THE OPERATOR "*" PRODUCES CORRECT RESULTS
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27 -- FOR FIXED POINT TYPES USING 3 SUBTESTS.
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28 -- THIS TEST REQUIRES MIN_WORD_LENGTH = 12.
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29 -- THIS TEST USES VALUES OF DELTA WHICH ARE LESS THAN 0.5.
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30 --
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31 -- TEST CASES ARE:
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32 -- A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
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33 -- B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
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34 -- C) THE OPERATOR *, USING NO MODEL NUMBERS.
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35 --
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36 -- REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
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37 -- WITH RANGE <, =, AND > THAN 1.0 AND
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38 -- WITH DELTA <, =, AND > THAN 1.0.
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39
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40 -- HISTORY:
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41 -- NTW 09/08/86 CREATED ORIGINAL TEST.
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42 -- RJW 11/05/86 REVISED COMMENTS.
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43 -- DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
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44 -- RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
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45 -- BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
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46 -- LINE. CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
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47
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48 WITH REPORT;
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49 PROCEDURE C45532A IS
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50
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51 USE REPORT;
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52
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53 MIN_WORD_LENGTH : CONSTANT := 12;
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54 FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
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55 FORTH : CONSTANT := FULL_SCALE / 4;
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56 DEL1 : CONSTANT := 0.5 / FULL_SCALE;
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57 TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. 0.5 - DEL1 * 1;
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58 TYPE FX_1 IS DELTA DEL1 * 2 RANGE -1.0 .. 1.0 - DEL1 * 2;
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59 TYPE FX_2 IS DELTA DEL1 * 4 RANGE -2.0 .. 2.0 - DEL1 * 4;
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60
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61 BEGIN TEST ("C45532A", "FIXED POINT OPERATOR ""*"" "
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62 & "FOR RANGE <, =, AND > 1.0");
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63
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64 --------------------------------------------------
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65
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66 -- CASE A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
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67
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68 A: DECLARE
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69 A : FX_0P5 := 0.0;
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70 B : FX_2 := 0.0;
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71 RESULT_VALUE : FX_1 := 0.0;
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72 LOWEST_ACCEPTABLE_VALUE : FX_1 := FX_1 (0.125);
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73 HIGHEST_ACCEPTABLE_VALUE : FX_1 := FX_1 (0.125);
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74 BEGIN
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75 IF EQUAL (3, 3) THEN
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76 A := FX_0P5 (0.25); -- A MODEL NUMBER
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77 B := FX_2 (0.50); -- A MODEL NUMBER
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78 END IF;
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79
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80 RESULT_VALUE := FX_1 (A * B);
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81
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82 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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83 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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84 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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85 & "WHEN A, B, AND A * B ARE ALL MODEL NUMBERS");
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86 END IF;
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87 END A;
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88
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89 --------------------------------------------------
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90
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91 -- CASE B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
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92
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93 B: DECLARE
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94 A : FX_0P5 := 0.0;
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95 B : FX_1 := 0.0;
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96 RESULT_VALUE : FX_2 := 0.0;
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97 LOW_COUNT : CONSTANT := FULL_SCALE / 64;
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98 HIGH_COUNT : CONSTANT := LOW_COUNT + 1;
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99 LOWEST_ACCEPTABLE_VALUE : FX_2
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100 := FX_2 (4 * DEL1 * LOW_COUNT );
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101 HIGHEST_ACCEPTABLE_VALUE : FX_2
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102 := FX_2 (4 * DEL1 * HIGH_COUNT);
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103 BEGIN
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104 IF EQUAL (3, 3) THEN
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105 A := FX_0P5 (DEL1 * (FORTH + 1) ); -- A MODEL NUMBER
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106 B := FX_1 (DEL1 * (FORTH * 2) ); -- A MODEL NUMBER
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107 END IF;
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108
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109 RESULT_VALUE := FX_2 (A * B);
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110
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111 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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112 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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113 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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114 & "WHEN A, B MODEL NUMBERS A * B NOT");
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115 END IF;
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116 END B;
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117
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118 --------------------------------------------------
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119
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120 -- CASE C) THE OPERATOR *, USING NO MODEL NUMBERS
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121
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122 C: DECLARE
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123 A : FX_1 := 0.0;
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124 B : FX_1 := 0.0;
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125 RESULT_VALUE : FX_2 := 0.0;
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126 LOW_COUNT : CONSTANT := FULL_SCALE / 128 - 1;
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127 HIGH_COUNT : CONSTANT := FULL_SCALE / 128 + 1;
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128 LOWEST_ACCEPTABLE_VALUE : FX_2
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129 := FX_2 (4 * DEL1 * LOW_COUNT );
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130 HIGHEST_ACCEPTABLE_VALUE : FX_2
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131 := FX_2 (4 * DEL1 * HIGH_COUNT);
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132 BEGIN
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133 IF EQUAL (3, 3) THEN
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134 A := FX_1 (DEL1 * (FORTH + 1) ); -- NOT MODEL NUMBER
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135 B := FX_1 (DEL1 * (FORTH - 1) ); -- NOT MODEL NUMBER
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136 END IF;
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137
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138 RESULT_VALUE := FX_2 (A * B);
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139
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140 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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141 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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142 FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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143 & "WHEN USING NO MODEL NUMBERS");
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144 END IF;
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145 END C;
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146
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147 --------------------------------------------------
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148
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149
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150 RESULT;
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151
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152 END C45532A;
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