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111
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1 -- C45532B.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
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41 -- HISTORY:
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42 -- NTW 09/08/86 CREATED ORIGINAL TEST.
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43 -- RJW 11/05/86 REVISED COMMENTS.
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44 -- DHH 10/20/87 SHORTENED LINES CONTAINING MORE THAN 72 CHARACTERS.
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45 -- RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
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46 -- BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
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47 -- LINE. CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
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48
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49 WITH REPORT;
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50 PROCEDURE C45532B IS
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51
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52 USE REPORT;
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53
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54 MIN_WORD_LENGTH : CONSTANT := 12; -- MUST BE EVEN & >= 6
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55 FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
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56 FORTH : CONSTANT := FULL_SCALE / 4;
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57 A_THIRD : CONSTANT := FULL_SCALE / 3;
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58 DEL1 : CONSTANT := 0.5 / FULL_SCALE;
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59 TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 ..
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60 0.5 - DEL1 * 1;
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61 TYPE FX_1 IS DELTA DEL1 * 2 RANGE -1.0 ..
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62 1.0 - DEL1 * 2;
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63 TYPE FX_2 IS DELTA DEL1 * 4 RANGE -2.0 ..
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64 2.0 - DEL1 * 4;
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65
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66 BEGIN TEST ("C45532B", "FIXED POINT OPERATOR ""/"" "
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67 & "FOR RANGE <, =, AND > 1.0");
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68
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69 --------------------------------------------------
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70
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71 -- CASE A) THE OPERATOR /, A, B, AND A / B ALL MODEL NUMBERS.
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72
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73 A: DECLARE
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74 A : FX_0P5 := 0.0;
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75 B : FX_1 := 0.0;
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76 RESULT_VALUE : FX_2 := 0.0;
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77 LOWEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5);
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78 HIGHEST_ACCEPTABLE_VALUE : FX_2 := FX_2 (0.5);
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79 BEGIN
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80 IF EQUAL (3, 3) THEN
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81 A := FX_0P5 (0.125); -- A MODEL NUMBER
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82 B := FX_1 (0.25); -- A MODEL NUMBER
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83 END IF;
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84
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85 RESULT_VALUE := FX_2 (A / B);
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86
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87 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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88 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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89 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
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90 & "WHEN A, B, AND A / B ARE ALL MODEL NUMBERS");
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91 END IF;
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92 END A;
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93
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94 --------------------------------------------------
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95
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96 -- CASE B) THE OPERATOR /, A, B MODEL NUMBERS A / B NOT.
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97
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98 B: DECLARE
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99 A : FX_0P5 := 0.0;
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100 B : FX_0P5 := 0.0;
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101 RESULT_VALUE : FX_1 := 0.0;
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102 LOWEST_ACCEPTABLE_VALUE : FX_1
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103 := FX_1 (2 * DEL1 * A_THIRD);
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104 HIGHEST_ACCEPTABLE_VALUE : FX_1
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105 := FX_1 (2 * DEL1 * (A_THIRD + 1) );
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106 BEGIN
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107 IF EQUAL (3, 3) THEN
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108 A := FX_0P5 (DEL1 * 1); -- A MODEL NUMBER
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109 B := FX_0P5 (DEL1 * 3); -- A MODEL NUMBER
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110 END IF;
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111
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112 RESULT_VALUE := FX_1 (A / B);
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113
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114 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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115 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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116 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
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117 & "WHEN A, B MODEL NUMBERS A / B NOT");
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118 END IF;
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119 END B;
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120
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121 --------------------------------------------------
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122
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123 -- CASE C) THE OPERATOR /, USING NO MODEL NUMBERS
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124
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125 C: DECLARE
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126 A : FX_1 := 0.0;
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127 B : FX_1 := 0.0;
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128 RESULT_VALUE : FX_0P5 := 0.0;
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129 LOW_COUNT : CONSTANT := 2 * A_THIRD;
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130 -- := (2 * FULL_SCALE * (2 * FORTH + 0))
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131 -- / (6 * FORTH + 2);
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132 HIGH_COUNT : CONSTANT := 2 * A_THIRD + 4;
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133 -- := (2 * FULL_SCALE * (2 * FORTH + 2))
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134 -- / (6 * FORTH + 0);
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135 LOWEST_ACCEPTABLE_VALUE : FX_0P5
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136 := FX_0P5 (DEL1 * LOW_COUNT );
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137 HIGHEST_ACCEPTABLE_VALUE : FX_0P5
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138 := FX_0P5 (DEL1 * HIGH_COUNT );
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139 BEGIN
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140 IF EQUAL (3, 3) THEN -- A AND B NOT MODEL NUMBERS
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141 A := FX_1 (DEL1 * (2 * FORTH + 1));
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142 B := FX_1 (DEL1 * (6 * FORTH + 1));
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143 END IF;
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144
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145 RESULT_VALUE := FX_0P5 (A / B);
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146
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147 IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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148 OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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149 FAILED ("RESULT OF ""/"" OUTSIDE RESULT MODEL INTERVAL "
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150 & "WHEN USING NO MODEL NUMBERS");
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151 END IF;
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152 END C;
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153
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154 --------------------------------------------------
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155
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156
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157 RESULT;
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158
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159 END C45532B;
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