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Cross-reference between ANSI Standard and Test Programs (cont.)

Section 7: Expressions

1

7.2: Syntax

24 25 26 36 37 38 39 40 41 42 43
146 147 148 149 150 151 155 157 158 159 164

61 143 144 145
165 166

1

7.4: Semantics

24 25 26 33 35 39 40 41 42 43 61 143 144 145 146
147 148 149 150 151 155 157 158 159 164 165 166 169 175 178
181 184

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35 167 168 170 173 174 176 177 180 182 183

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43 117 119 120 121 124 127 128 169 175 178

Section 8: Implementation-Supplied Functions

8.2: Syntax

130 131 143 144 145 146 147 148 149 150 164

8.4: Semantics

114 115 116 117 119 120 121 123 124 127 128 130 131 132 133
134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
149 150 164 167 169

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Cross-reference between ANSI Standard and Test Programs (cont.)

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12.2: Syntax

1 6 165 172 173 174 175 192 193 203 204

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Section 14: The Data-, Read, and Restore-Statements

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Cross-reference between ANSI Standard and Test Programs (cont.)

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16.4: Semantics

151 153 154 155 156 157 158 159 160 161 162 163 164 167

Section 17: The Randomize Statement

17.2: Syntax

131

17.4: Semantics

131

Section 18: The Remark-Statement

18.2: Syntax

15

18.4: Semantics

15

Appendix A

Differences between Versions 1 and 2 of

the Minimal BASIC Test Programs

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In the development of Version variety of changes in the test system. some stylistic. Below is

a list of differences.

we
introduced

a wide Some were substantive, the more

significant

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Perhaps the most extensive change has to do with the more complete treatment of the errors and exceptions which must be detected and reported by a conforming processor. We've tried to make clear the distinction between the two and just what conformance entails in each case. Also, Version 2 tests a wider variety of anomalous conditions for the processor to handle. It is in this area of helpful recovery from programmer mistakes that the Minimal BASIC standard imposes stricter requirements than other language standards and the tests reflect this emphasis.

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Version 2 differs significantly from Version 1 in its treatment of accuracy requirements. We abandoned any attempt to compute internal accuracy

for

the purpose of judging conformance as being too vulnerable to the

problems of circularity. Rather we formulated a criterion of accuracy, and computed the required results outside the program itself. The programs therefore generally contain

only simple IF statements comparing constants or variables (no lengthy expressions). Those test sections where we did attempt some internal computation of accuracy, e.8., the error measure and computation of accuracy of

constants and variables, are informative only.

3.

There are a number of

new informative tests for the RND function. These are to help users whose applications are strongly dependent on a nearly patternless RND sequence.

4.

The overall structure of the test system

is

more explicit. The group numbering should help to explain why testing of certain sections of the ANSI standard had to precede others. Also, it should be easier to isolate the programs relevant to the testing of a given section by referring to the group structure.

5.

We tried to be especially careful to keep the printed output of the various tests as consistent as their subject matter would allow. In particular, we always made sure that the programs stated as explicitly as possible what was necessary for the test to pass or fail and that this message was surrounded by triple asterisks.

References

1.

American National Standard for Minimal
American National Standards Institute,
January 1978.

BASIC, X3.60-1978,
New York New York,

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Candidate Standard for Fundamental BASIC,
National Bureau of Standards, Washington DC,

3.

Software

T. R. Hopkins, PBASIC - A Verifier for BASIC,
Practice and Experience, Vol. 10, 175-181 (1980)

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