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111
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1 -- CD30004.A
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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 --
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26 -- OBJECTIVE:
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27 --
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28 --
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29 -- Check that the unspecified Size of static discrete
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30 -- subtypes is the number of bits needed to represent each value
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31 -- belonging to the subtype using an unbiased representation, where
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32 -- space for a sign bit is provided only in the event the subtype
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33 -- contains negative values. Check that for first subtypes specified
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34 -- Sizes are supported reflecting this representation. [ARM 95 13.3(55)].
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35 --
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36 -- TEST DESCRIPTION:
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37 -- This test defines a few types that should have distinctly recognizable
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38 -- sizes. A packed record which should result in very specific bits
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39 -- sizes for it's components is used to check the first part of the
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40 -- objective. The second part of the objective is checked by giving
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41 -- sizes for a similar set of types.
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42 --
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43 -- APPLICABILITY CRITERIA:
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44 -- All implementations must attempt to compile this test.
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45 --
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46 -- For implementations validating against Systems Programming Annex (C):
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47 -- this test must execute and report PASSED.
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48 --
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49 -- For implementations not validating against Annex C:
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50 -- this test may report compile time errors at one or more points
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51 -- indicated by "-- ANX-C RQMT", in which case it may be graded as inapplicable.
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52 -- Otherwise, the test must execute and report PASSED.
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53 --
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54 -- CHANGE HISTORY:
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55 -- 22 JUL 95 SAIC Initial version
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56 -- 06 MAY 96 SAIC Revised for 2.1
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57 -- 26 FEB 97 PWB.CTA Added pragma Pack for type Check_Record
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58 -- 16 FEB 98 EDS Modified Documentation.
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59 -- 06 JUL 99 RLB Repaired comments, removed junk test cases.
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60 -- Added test cases to test that appropriate Size
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61 -- clauses are allowed.
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62
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63 --!
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64 ----------------------------------------------------------------- CD30004_0
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65
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66 package CD30004_0 is
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67
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68 -- Check that the unspecified Size of static discrete and fixed point
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69 -- subtypes are the number of bits needed to represent each value
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70 -- belonging to the subtype using an unbiased representation, where
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71 -- space for a sign bit is provided only in the event the subtype
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72 -- contains negative values. Check that for first subtypes specified
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73 -- Sizes are supported reflecting this representation.
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74
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75 type Bits_2 is ( Zeroth_Bit, Fiercest_Bit, Secants_Bit, Threadless_Bit );
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76
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77 type Bits_3 is range 0..2**3-1;
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78
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79 type Bits_5 is range -2**4+1..2**4-1; -- allow for 1's comp
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80
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81 type Bits_14 is mod 2**14;
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82
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83 type Check_Record is
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84 record
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85 B14 : Bits_14;
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86 B2 : Bits_2;
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87 B3 : Bits_3;
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88 B5 : Bits_5;
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89 C : Character;
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90 end record;
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91 pragma Pack ( Check_Record );
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92
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93 procedure TC_Check_Values;
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94 procedure TC_Check_Specified_Sizes;
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95
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96 end CD30004_0;
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97
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98 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
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99 with Report;
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100 with Impdef;
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101 package body CD30004_0 is
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102
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103 procedure TC_Check_Values is
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104 begin
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105
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106 if Bits_2'Size /= 2 then
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107 if Impdef.Validating_Annex_C then
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108 Report.Failed("Bits_2'Size not 2 bits");
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109 else -- Recommended levels of support are not binding.
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110 Report.Comment("Bits_2'Size not 2 bits");
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111 end if;
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112 end if;
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113
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114 if Bits_14'Size /= 14 then
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115 if Impdef.Validating_Annex_C then
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116 Report.Failed("Bits_14'Size not 14 bits");
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117 else
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118 Report.Comment("Bits_14'Size not 14 bits");
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119 end if;
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120 end if;
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121
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122 if Bits_3'Size /= 3 then
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123 if Impdef.Validating_Annex_C then
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124 Report.Failed("Bits_3'Size not 3 bits");
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125 else
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126 Report.Comment("Bits_3'Size not 3 bits");
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127 end if;
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128 end if;
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129
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130 if Bits_5'Size /= 5 then
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131 if Impdef.Validating_Annex_C then
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132 Report.Failed("Bits_5'Size not 5 bits");
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133 else
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134 Report.Comment("Bits_5'Size not 5 bits");
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135 end if;
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136 end if;
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137
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138 if Character'Size /= 8 then
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139 Report.Failed("Character'Size not 8 bits");
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140 end if;
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141
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142 if Wide_Character'Size /= 16 then
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143 Report.Failed("Wide_Character'Size not 16 bits");
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144 end if;
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145
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146 end TC_Check_Values;
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147
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148 type Spec_Bits_2 is ( Zeroth_Bit, Fiercest_Bit, Secants_Bit, Threadless_Bit );
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149 for Spec_Bits_2'Size use 2; -- ANX-C RQMT.
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150
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151 type Spec_Bits_3 is range 0..2**3-1;
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152 for Spec_Bits_3'Size use 3; -- ANX-C RQMT.
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153
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154 type Spec_Bits_5 is range -2**4+1..2**4-1; -- allow for 1's comp
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155 for Spec_Bits_5'Size use 5; -- ANX-C RQMT.
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156
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157 type Spec_Bits_14 is mod 2**14;
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158 for Spec_Bits_14'Size use 14; -- ANX-C RQMT.
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159
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160 type Spec_Record is new Check_Record;
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161 for Spec_Record'Size use 64; -- ANX-C RQMT.
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162
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163 procedure TC_Check_Specified_Sizes is
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164
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165 begin
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166
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167 if Spec_Record'Size /= 64 then
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168 Report.Failed("Spec_Record'Size not 64 bits");
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169 end if;
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170
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171 if Spec_Bits_2'Size /= 2 then
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172 Report.Failed("Spec_Bits_2'Size not 2 bits");
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173 end if;
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174
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175 if Spec_Bits_14'Size /= 14 then
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176 Report.Failed("Spec_Bits_14'Size not 14 bits");
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177 end if;
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178
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179 if Spec_Bits_3'Size /= 3 then
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180 Report.Failed("Spec_Bits_3'Size not 3 bits");
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181 end if;
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182
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183 if Spec_Bits_5'Size /= 5 then
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184 Report.Failed("Spec_Bits_5'Size not 5 bits");
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185 end if;
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186
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187 end TC_Check_Specified_Sizes;
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188
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189 end CD30004_0;
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190
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191 ------------------------------------------------------------------- CD30004
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192
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193 with Report;
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194 with CD30004_0;
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195
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196 procedure CD30004 is
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197
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198 begin -- Main test procedure.
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199
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200 Report.Test ("CD30004", "Check that the unspecified Size of static " &
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201 "discrete and fixed point subtypes is the number of bits " &
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202 "needed to represent each value belonging to the subtype " &
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203 "using an unbiased representation, where space for a sign " &
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204 "bit is provided only in the event the subtype contains " &
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205 "negative values. Check that for first subtypes " &
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206 "specified Sizes are supported reflecting this " &
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207 "representation.");
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208
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209 CD30004_0.TC_Check_Values;
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210
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211 CD30004_0.TC_Check_Specified_Sizes;
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212
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213 Report.Result;
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214
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215 end CD30004;
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