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Rev | Author | Line No. | Line |
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7983 | leency | 1 | (* |
7597 | akron1 | 2 | BSD 2-Clause License |
3 | |||
7983 | leency | 4 | Copyright (c) 2018-2020, Anton Krotov |
7597 | akron1 | 5 | All rights reserved. |
6 | *) |
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7 | |||
8 | MODULE ARITH; |
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9 | |||
7693 | akron1 | 10 | IMPORT AVLTREES, STRINGS, UTILS; |
7597 | akron1 | 11 | |
12 | |||
13 | CONST |
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14 | |||
15 | tINTEGER* = 1; tREAL* = 2; tSET* = 3; |
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16 | tBOOLEAN* = 4; tCHAR* = 5; tWCHAR* = 6; |
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17 | tSTRING* = 7; |
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18 | |||
19 | |||
20 | TYPE |
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21 | |||
22 | RELATION* = ARRAY 3 OF CHAR; |
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23 | |||
24 | VALUE* = RECORD |
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25 | |||
26 | typ*: INTEGER; |
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27 | |||
28 | int: INTEGER; |
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29 | float: REAL; |
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30 | set: SET; |
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31 | bool: BOOLEAN; |
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32 | |||
33 | string*: AVLTREES.DATA |
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34 | |||
35 | END; |
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36 | |||
37 | |||
38 | VAR |
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39 | |||
40 | digit: ARRAY 256 OF INTEGER; |
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41 | |||
42 | |||
43 | PROCEDURE Int* (v: VALUE): INTEGER; |
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44 | VAR |
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45 | res: INTEGER; |
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46 | |||
47 | BEGIN |
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48 | |||
7696 | akron1 | 49 | CASE v.typ OF |
50 | |tINTEGER, tCHAR, tWCHAR: |
||
7597 | akron1 | 51 | res := v.int |
7696 | akron1 | 52 | |tSET: |
7693 | akron1 | 53 | res := UTILS.Long(ORD(v.set)) |
7696 | akron1 | 54 | |tBOOLEAN: |
7597 | akron1 | 55 | res := ORD(v.bool) |
56 | END |
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57 | |||
58 | RETURN res |
||
59 | END Int; |
||
60 | |||
61 | |||
62 | PROCEDURE getBool* (v: VALUE): BOOLEAN; |
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63 | BEGIN |
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64 | ASSERT(v.typ = tBOOLEAN); |
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65 | |||
66 | RETURN v.bool |
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67 | END getBool; |
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68 | |||
69 | |||
70 | PROCEDURE Float* (v: VALUE): REAL; |
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71 | BEGIN |
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72 | ASSERT(v.typ = tREAL); |
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73 | |||
74 | RETURN v.float |
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75 | END Float; |
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76 | |||
77 | |||
7983 | leency | 78 | PROCEDURE range* (i: VALUE; a, b: INTEGER): BOOLEAN; |
79 | RETURN (a <= i.int) & (i.int <= b) |
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80 | END range; |
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81 | |||
82 | |||
7597 | akron1 | 83 | PROCEDURE check* (v: VALUE): BOOLEAN; |
84 | VAR |
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7696 | akron1 | 85 | res: BOOLEAN; |
7597 | akron1 | 86 | |
87 | BEGIN |
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7696 | akron1 | 88 | CASE v.typ OF |
7983 | leency | 89 | |tINTEGER: res := range(v, UTILS.target.minInt, UTILS.target.maxInt) |
90 | |tCHAR: res := range(v, 0, 255) |
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91 | |tWCHAR: res := range(v, 0, 65535) |
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7696 | akron1 | 92 | |tREAL: res := (-UTILS.target.maxReal <= v.float) & (v.float <= UTILS.target.maxReal) |
7597 | akron1 | 93 | END |
94 | |||
7696 | akron1 | 95 | RETURN res |
7597 | akron1 | 96 | END check; |
97 | |||
98 | |||
99 | PROCEDURE isZero* (v: VALUE): BOOLEAN; |
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100 | VAR |
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101 | res: BOOLEAN; |
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7696 | akron1 | 102 | |
7597 | akron1 | 103 | BEGIN |
7696 | akron1 | 104 | CASE v.typ OF |
105 | |tINTEGER: res := v.int = 0 |
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106 | |tREAL: res := v.float = 0.0 |
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7597 | akron1 | 107 | END |
108 | |||
109 | RETURN res |
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110 | END isZero; |
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111 | |||
112 | |||
113 | PROCEDURE iconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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114 | VAR |
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115 | value: INTEGER; |
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116 | i: INTEGER; |
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117 | d: INTEGER; |
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118 | |||
119 | BEGIN |
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120 | error := 0; |
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121 | value := 0; |
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122 | |||
123 | i := 0; |
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124 | WHILE STRINGS.digit(s[i]) & (error = 0) DO |
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125 | d := digit[ORD(s[i])]; |
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126 | IF value <= (UTILS.maxint - d) DIV 10 THEN |
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127 | value := value * 10 + d; |
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128 | INC(i) |
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129 | ELSE |
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130 | error := 1 |
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131 | END |
||
132 | END; |
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133 | |||
134 | IF error = 0 THEN |
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135 | v.int := value; |
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136 | v.typ := tINTEGER; |
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137 | IF ~check(v) THEN |
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138 | error := 1 |
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139 | END |
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140 | END |
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141 | |||
142 | END iconv; |
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143 | |||
144 | |||
145 | PROCEDURE hconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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146 | VAR |
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147 | value: INTEGER; |
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148 | i: INTEGER; |
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149 | n: INTEGER; |
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150 | d: INTEGER; |
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151 | |||
152 | BEGIN |
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153 | ASSERT(STRINGS.digit(s[0])); |
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154 | |||
155 | error := 0; |
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156 | value := 0; |
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157 | |||
158 | n := -1; |
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159 | i := 0; |
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160 | WHILE (s[i] # "H") & (s[i] # "X") & (error = 0) DO |
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161 | |||
162 | d := digit[ORD(s[i])]; |
||
163 | IF (n = -1) & (d # 0) THEN |
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164 | n := i |
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165 | END; |
||
166 | |||
7693 | akron1 | 167 | IF (n # -1) & (i - n + 1 > UTILS.target.maxHex) THEN |
7597 | akron1 | 168 | error := 2 |
169 | ELSE |
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170 | value := value * 16 + d; |
||
171 | INC(i) |
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172 | END |
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173 | |||
174 | END; |
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175 | |||
7693 | akron1 | 176 | value := UTILS.Long(value); |
7597 | akron1 | 177 | |
178 | IF (s[i] = "X") & (n # -1) & (i - n > 4) THEN |
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179 | error := 3 |
||
180 | END; |
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181 | |||
182 | IF error = 0 THEN |
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183 | v.int := value; |
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184 | IF s[i] = "X" THEN |
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185 | v.typ := tCHAR; |
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186 | IF ~check(v) THEN |
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187 | v.typ := tWCHAR; |
||
188 | IF ~check(v) THEN |
||
189 | error := 3 |
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190 | END |
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191 | END |
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192 | ELSE |
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193 | v.typ := tINTEGER; |
||
194 | IF ~check(v) THEN |
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195 | error := 2 |
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196 | END |
||
197 | END |
||
198 | END |
||
199 | |||
200 | END hconv; |
||
201 | |||
202 | |||
203 | PROCEDURE opFloat2 (VAR a: REAL; b: REAL; op: CHAR): BOOLEAN; |
||
204 | BEGIN |
||
205 | CASE op OF |
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7983 | leency | 206 | |"+": a := a + b |
207 | |"-": a := a - b |
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208 | |"*": a := a * b |
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209 | |"/": a := a / b |
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7597 | akron1 | 210 | END |
211 | |||
7983 | leency | 212 | RETURN (-UTILS.maxreal <= a) & (a <= UTILS.maxreal) (* +inf > UTILS.maxreal *) |
7597 | akron1 | 213 | END opFloat2; |
214 | |||
215 | |||
216 | PROCEDURE fconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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217 | VAR |
||
218 | value: REAL; |
||
219 | exp10: REAL; |
||
220 | i, n, d: INTEGER; |
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221 | minus: BOOLEAN; |
||
222 | |||
223 | BEGIN |
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224 | error := 0; |
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225 | value := 0.0; |
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226 | exp10 := 10.0; |
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227 | minus := FALSE; |
||
228 | n := 0; |
||
229 | |||
230 | i := 0; |
||
231 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
||
232 | IF opFloat2(value, 10.0, "*") & opFloat2(value, FLT(digit[ORD(s[i])]), "+") THEN |
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233 | INC(i) |
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234 | ELSE |
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235 | error := 4 |
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236 | END |
||
237 | END; |
||
238 | |||
239 | INC(i); |
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240 | |||
241 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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242 | IF opFloat2(value, FLT(digit[ORD(s[i])]) / exp10, "+") & opFloat2(exp10, 10.0, "*") THEN |
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243 | INC(i) |
||
244 | ELSE |
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245 | error := 4 |
||
246 | END |
||
247 | END; |
||
248 | |||
249 | IF s[i] = "E" THEN |
||
250 | INC(i) |
||
251 | END; |
||
252 | |||
253 | IF (s[i] = "-") OR (s[i] = "+") THEN |
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254 | minus := s[i] = "-"; |
||
255 | INC(i) |
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256 | END; |
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257 | |||
258 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
||
259 | d := digit[ORD(s[i])]; |
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260 | IF n <= (UTILS.maxint - d) DIV 10 THEN |
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261 | n := n * 10 + d; |
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262 | INC(i) |
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263 | ELSE |
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264 | error := 5 |
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265 | END |
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266 | END; |
||
267 | |||
268 | exp10 := 1.0; |
||
269 | WHILE (error = 0) & (n > 0) DO |
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270 | IF opFloat2(exp10, 10.0, "*") THEN |
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271 | DEC(n) |
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272 | ELSE |
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273 | error := 4 |
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274 | END |
||
275 | END; |
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276 | |||
277 | IF error = 0 THEN |
||
278 | IF minus THEN |
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279 | IF ~opFloat2(value, exp10, "/") THEN |
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280 | error := 4 |
||
281 | END |
||
282 | ELSE |
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283 | IF ~opFloat2(value, exp10, "*") THEN |
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284 | error := 4 |
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285 | END |
||
286 | END |
||
287 | END; |
||
288 | |||
289 | IF error = 0 THEN |
||
290 | v.float := value; |
||
291 | v.typ := tREAL; |
||
292 | IF ~check(v) THEN |
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293 | error := 4 |
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294 | END |
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295 | END |
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296 | |||
297 | END fconv; |
||
298 | |||
299 | |||
300 | PROCEDURE setChar* (VAR v: VALUE; ord: INTEGER); |
||
301 | BEGIN |
||
302 | v.typ := tCHAR; |
||
303 | v.int := ord |
||
304 | END setChar; |
||
305 | |||
306 | |||
307 | PROCEDURE setWChar* (VAR v: VALUE; ord: INTEGER); |
||
308 | BEGIN |
||
309 | v.typ := tWCHAR; |
||
310 | v.int := ord |
||
311 | END setWChar; |
||
312 | |||
313 | |||
314 | PROCEDURE addInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
315 | VAR |
||
316 | error: BOOLEAN; |
||
317 | |||
318 | BEGIN |
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319 | IF (a > 0) & (b > 0) THEN |
||
320 | error := a > UTILS.maxint - b |
||
321 | ELSIF (a < 0) & (b < 0) THEN |
||
322 | error := a < UTILS.minint - b |
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323 | ELSE |
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324 | error := FALSE |
||
325 | END; |
||
326 | |||
327 | IF ~error THEN |
||
328 | a := a + b |
||
329 | ELSE |
||
330 | a := 0 |
||
331 | END |
||
332 | |||
333 | RETURN ~error |
||
334 | END addInt; |
||
335 | |||
336 | |||
337 | PROCEDURE subInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
338 | VAR |
||
339 | error: BOOLEAN; |
||
340 | |||
341 | BEGIN |
||
342 | IF (a > 0) & (b < 0) THEN |
||
343 | error := a > UTILS.maxint + b |
||
344 | ELSIF (a < 0) & (b > 0) THEN |
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345 | error := a < UTILS.minint + b |
||
346 | ELSIF (a = 0) & (b < 0) THEN |
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347 | error := b = UTILS.minint |
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348 | ELSE |
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349 | error := FALSE |
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350 | END; |
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351 | |||
352 | IF ~error THEN |
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353 | a := a - b |
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354 | ELSE |
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355 | a := 0 |
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356 | END |
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357 | |||
358 | RETURN ~error |
||
359 | END subInt; |
||
360 | |||
361 | |||
362 | PROCEDURE lg2 (x: INTEGER): INTEGER; |
||
363 | VAR |
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364 | n: INTEGER; |
||
365 | |||
366 | BEGIN |
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367 | ASSERT(x > 0); |
||
368 | |||
7983 | leency | 369 | n := UTILS.Log2(x); |
370 | IF n = -1 THEN |
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7597 | akron1 | 371 | n := 255 |
372 | END |
||
373 | |||
374 | RETURN n |
||
375 | END lg2; |
||
376 | |||
377 | |||
378 | PROCEDURE mulInt* (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
379 | VAR |
||
380 | error: BOOLEAN; |
||
381 | min, max: INTEGER; |
||
382 | |||
383 | BEGIN |
||
384 | min := UTILS.minint; |
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385 | max := UTILS.maxint; |
||
386 | |||
387 | IF ((a > 1) & (b > 1)) OR ((a < 0) & (b < 0)) THEN |
||
388 | error := (a = min) OR (b = min) OR (ABS(a) > max DIV ABS(b)) |
||
389 | |||
390 | ELSIF ((a > 1) & (b < 0)) OR ((a < 0) & (b > 1)) THEN |
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391 | error := (a = min) OR (b = min); |
||
392 | IF ~error THEN |
||
393 | IF lg2(ABS(a)) + lg2(ABS(b)) >= UTILS.bit_depth THEN |
||
394 | error := ABS(a) > max DIV ABS(b) |
||
395 | END |
||
396 | END |
||
397 | |||
398 | ELSE |
||
399 | error := FALSE |
||
400 | END; |
||
401 | |||
402 | IF ~error THEN |
||
403 | a := a * b |
||
404 | ELSE |
||
405 | a := 0 |
||
406 | END |
||
407 | |||
408 | RETURN ~error |
||
409 | END mulInt; |
||
410 | |||
411 | |||
412 | PROCEDURE _ASR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 413 | RETURN ASR(UTILS.Long(x), n) |
7597 | akron1 | 414 | END _ASR; |
415 | |||
416 | |||
417 | PROCEDURE _LSR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 418 | RETURN UTILS.Long(LSR(UTILS.Short(x), n)) |
7597 | akron1 | 419 | END _LSR; |
420 | |||
421 | |||
422 | PROCEDURE _LSL (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 423 | RETURN UTILS.Long(LSL(x, n)) |
7597 | akron1 | 424 | END _LSL; |
425 | |||
426 | |||
427 | PROCEDURE _ROR1_32 (x: INTEGER): INTEGER; |
||
428 | BEGIN |
||
7693 | akron1 | 429 | x := UTILS.Short(x); |
7597 | akron1 | 430 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 31))) |
7693 | akron1 | 431 | RETURN UTILS.Long(x) |
7597 | akron1 | 432 | END _ROR1_32; |
433 | |||
434 | |||
7693 | akron1 | 435 | PROCEDURE _ROR1_16 (x: INTEGER): INTEGER; |
436 | BEGIN |
||
437 | x := x MOD 65536; |
||
438 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 15))) |
||
439 | RETURN UTILS.Long(x) |
||
440 | END _ROR1_16; |
||
441 | |||
442 | |||
7597 | akron1 | 443 | PROCEDURE _ROR (x, n: INTEGER): INTEGER; |
444 | BEGIN |
||
7693 | akron1 | 445 | |
446 | CASE UTILS.bit_diff OF |
||
447 | |0: x := ROR(x, n) |
||
448 | |16, 48: |
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449 | n := n MOD 16; |
||
450 | WHILE n > 0 DO |
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451 | x := _ROR1_16(x); |
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452 | DEC(n) |
||
453 | END |
||
454 | |32: |
||
7597 | akron1 | 455 | n := n MOD 32; |
456 | WHILE n > 0 DO |
||
457 | x := _ROR1_32(x); |
||
458 | DEC(n) |
||
459 | END |
||
460 | END |
||
461 | |||
462 | RETURN x |
||
463 | END _ROR; |
||
464 | |||
465 | |||
466 | PROCEDURE opInt* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
467 | VAR |
||
468 | success: BOOLEAN; |
||
469 | |||
470 | BEGIN |
||
471 | success := TRUE; |
||
472 | |||
473 | CASE op OF |
||
474 | |"+": success := addInt(a.int, b.int) |
||
475 | |"-": success := subInt(a.int, b.int) |
||
476 | |"*": success := mulInt(a.int, b.int) |
||
477 | |"/": success := FALSE |
||
7983 | leency | 478 | |"D": a.int := a.int DIV b.int |
7597 | akron1 | 479 | |"M": a.int := a.int MOD b.int |
480 | |"L": a.int := _LSL(a.int, b.int) |
||
481 | |"A": a.int := _ASR(a.int, b.int) |
||
482 | |"O": a.int := _ROR(a.int, b.int) |
||
483 | |"R": a.int := _LSR(a.int, b.int) |
||
484 | |"m": a.int := MIN(a.int, b.int) |
||
485 | |"x": a.int := MAX(a.int, b.int) |
||
486 | END; |
||
487 | a.typ := tINTEGER |
||
488 | |||
489 | RETURN success & check(a) |
||
490 | END opInt; |
||
491 | |||
492 | |||
493 | PROCEDURE charToStr* (c: VALUE; VAR s: ARRAY OF CHAR); |
||
494 | BEGIN |
||
495 | s[0] := CHR(c.int); |
||
496 | s[1] := 0X |
||
497 | END charToStr; |
||
498 | |||
499 | |||
500 | PROCEDURE opSet* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
501 | BEGIN |
||
502 | CASE op OF |
||
503 | |"+": a.set := a.set + b.set |
||
504 | |"-": a.set := a.set - b.set |
||
505 | |"*": a.set := a.set * b.set |
||
506 | |"/": a.set := a.set / b.set |
||
507 | END; |
||
508 | a.typ := tSET |
||
509 | END opSet; |
||
510 | |||
511 | |||
512 | PROCEDURE opFloat* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
513 | BEGIN |
||
514 | a.typ := tREAL |
||
515 | RETURN opFloat2(a.float, b.float, op) & check(a) |
||
516 | END opFloat; |
||
517 | |||
518 | |||
519 | PROCEDURE ord* (VAR v: VALUE); |
||
520 | BEGIN |
||
521 | CASE v.typ OF |
||
522 | |tCHAR, tWCHAR: |
||
523 | |tBOOLEAN: v.int := ORD(v.bool) |
||
7693 | akron1 | 524 | |tSET: v.int := UTILS.Long(ORD(v.set)) |
7597 | akron1 | 525 | END; |
526 | v.typ := tINTEGER |
||
527 | END ord; |
||
528 | |||
529 | |||
530 | PROCEDURE odd* (VAR v: VALUE); |
||
531 | BEGIN |
||
532 | v.typ := tBOOLEAN; |
||
533 | v.bool := ODD(v.int) |
||
534 | END odd; |
||
535 | |||
536 | |||
537 | PROCEDURE bits* (VAR v: VALUE); |
||
538 | BEGIN |
||
539 | v.typ := tSET; |
||
540 | v.set := BITS(v.int) |
||
541 | END bits; |
||
542 | |||
543 | |||
544 | PROCEDURE abs* (VAR v: VALUE): BOOLEAN; |
||
545 | VAR |
||
546 | res: BOOLEAN; |
||
547 | |||
548 | BEGIN |
||
7693 | akron1 | 549 | res := FALSE; |
7597 | akron1 | 550 | |
551 | CASE v.typ OF |
||
552 | |tREAL: |
||
553 | v.float := ABS(v.float); |
||
554 | res := TRUE |
||
555 | |tINTEGER: |
||
556 | IF v.int # UTILS.minint THEN |
||
557 | v.int := ABS(v.int); |
||
558 | res := TRUE |
||
559 | END |
||
7693 | akron1 | 560 | END |
561 | |||
7597 | akron1 | 562 | RETURN res |
563 | END abs; |
||
564 | |||
565 | |||
566 | PROCEDURE floor* (VAR v: VALUE): BOOLEAN; |
||
567 | VAR |
||
568 | res: BOOLEAN; |
||
569 | |||
570 | BEGIN |
||
571 | v.typ := tINTEGER; |
||
572 | res := (FLT(UTILS.minint) <= v.float) & (v.float <= FLT(UTILS.maxint)); |
||
573 | IF res THEN |
||
574 | v.int := FLOOR(v.float) |
||
575 | END |
||
576 | |||
577 | RETURN res |
||
578 | END floor; |
||
579 | |||
580 | |||
581 | PROCEDURE flt* (VAR v: VALUE); |
||
582 | BEGIN |
||
583 | v.typ := tREAL; |
||
584 | v.float := FLT(v.int) |
||
585 | END flt; |
||
586 | |||
587 | |||
588 | PROCEDURE neg* (VAR v: VALUE): BOOLEAN; |
||
589 | VAR |
||
590 | z: VALUE; |
||
591 | res: BOOLEAN; |
||
592 | |||
593 | BEGIN |
||
594 | res := TRUE; |
||
595 | |||
596 | z.typ := tINTEGER; |
||
597 | z.int := 0; |
||
598 | |||
599 | CASE v.typ OF |
||
600 | |tREAL: v.float := -v.float |
||
601 | |tSET: v.set := -v.set |
||
602 | |tINTEGER: res := opInt(z, v, "-"); v := z |
||
603 | |tBOOLEAN: v.bool := ~v.bool |
||
604 | END |
||
605 | |||
606 | RETURN res |
||
607 | END neg; |
||
608 | |||
609 | |||
610 | PROCEDURE setbool* (VAR v: VALUE; b: BOOLEAN); |
||
611 | BEGIN |
||
612 | v.bool := b; |
||
613 | v.typ := tBOOLEAN |
||
614 | END setbool; |
||
615 | |||
616 | |||
617 | PROCEDURE opBoolean* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
618 | BEGIN |
||
619 | CASE op OF |
||
620 | |"&": a.bool := a.bool & b.bool |
||
621 | |"|": a.bool := a.bool OR b.bool |
||
622 | END; |
||
623 | a.typ := tBOOLEAN |
||
624 | END opBoolean; |
||
625 | |||
626 | |||
627 | PROCEDURE less (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
628 | VAR |
||
629 | res: BOOLEAN; |
||
630 | |||
631 | BEGIN |
||
632 | res := FALSE; |
||
633 | |||
634 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
635 | CASE v.typ OF |
||
636 | |tINTEGER, |
||
637 | tWCHAR, |
||
638 | tCHAR: res := v.int < v2.int |
||
639 | |tREAL: res := v.float < v2.float |
||
640 | |tBOOLEAN, |
||
641 | tSET: error := 1 |
||
642 | END |
||
643 | ELSE |
||
644 | error := 1 |
||
645 | END |
||
646 | |||
647 | RETURN res |
||
648 | END less; |
||
649 | |||
650 | |||
651 | PROCEDURE equal (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
652 | VAR |
||
653 | res: BOOLEAN; |
||
654 | |||
655 | BEGIN |
||
656 | res := FALSE; |
||
657 | |||
658 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
659 | CASE v.typ OF |
||
660 | |tINTEGER, |
||
661 | tWCHAR, |
||
662 | tCHAR: res := v.int = v2.int |
||
663 | |tREAL: res := v.float = v2.float |
||
664 | |tBOOLEAN: res := v.bool = v2.bool |
||
665 | |tSET: res := v.set = v2.set |
||
666 | END |
||
667 | ELSE |
||
668 | error := 1 |
||
669 | END |
||
670 | |||
671 | RETURN res |
||
672 | END equal; |
||
673 | |||
674 | |||
675 | PROCEDURE relation* (VAR v: VALUE; v2: VALUE; operator: RELATION; VAR error: INTEGER); |
||
676 | VAR |
||
677 | res: BOOLEAN; |
||
678 | |||
679 | BEGIN |
||
680 | error := 0; |
||
681 | |||
682 | res := FALSE; |
||
683 | |||
684 | CASE operator[0] OF |
||
685 | |||
686 | |"=": |
||
687 | res := equal(v, v2, error) |
||
688 | |||
689 | |"#": |
||
690 | res := ~equal(v, v2, error) |
||
691 | |||
692 | |"<": |
||
693 | IF operator[1] = "=" THEN |
||
694 | res := less(v, v2, error); |
||
695 | IF error = 0 THEN |
||
696 | res := equal(v, v2, error) OR res |
||
697 | END |
||
698 | ELSE |
||
699 | res := less(v, v2, error) |
||
700 | END |
||
701 | |||
702 | |">": |
||
703 | IF operator[1] = "=" THEN |
||
704 | res := ~less(v, v2, error) |
||
705 | ELSE |
||
706 | res := less(v, v2, error); |
||
707 | IF error = 0 THEN |
||
708 | res := equal(v, v2, error) OR res |
||
709 | END; |
||
710 | res := ~res |
||
711 | END |
||
712 | |||
713 | |"I": |
||
714 | IF (v.typ = tINTEGER) & (v2.typ = tSET) THEN |
||
7693 | akron1 | 715 | IF range(v, 0, UTILS.target.maxSet) THEN |
7597 | akron1 | 716 | res := v.int IN v2.set |
717 | ELSE |
||
718 | error := 2 |
||
719 | END |
||
720 | ELSE |
||
721 | error := 1 |
||
722 | END |
||
723 | |||
724 | END; |
||
725 | |||
726 | IF error = 0 THEN |
||
727 | v.bool := res; |
||
728 | v.typ := tBOOLEAN |
||
729 | END |
||
730 | |||
731 | END relation; |
||
732 | |||
733 | |||
734 | PROCEDURE emptySet* (VAR v: VALUE); |
||
735 | BEGIN |
||
736 | v.typ := tSET; |
||
737 | v.set := {} |
||
738 | END emptySet; |
||
739 | |||
740 | |||
741 | PROCEDURE constrSet* (VAR v: VALUE; a, b: VALUE); |
||
742 | BEGIN |
||
743 | v.typ := tSET; |
||
744 | v.set := {a.int .. b.int} |
||
745 | END constrSet; |
||
746 | |||
747 | |||
748 | PROCEDURE getInt* (v: VALUE): INTEGER; |
||
749 | BEGIN |
||
750 | ASSERT(check(v)) |
||
751 | |||
752 | RETURN v.int |
||
753 | END getInt; |
||
754 | |||
755 | |||
756 | PROCEDURE setInt* (VAR v: VALUE; i: INTEGER): BOOLEAN; |
||
757 | BEGIN |
||
758 | v.int := i; |
||
759 | v.typ := tINTEGER |
||
760 | |||
761 | RETURN check(v) |
||
762 | END setInt; |
||
763 | |||
764 | |||
765 | PROCEDURE init; |
||
766 | VAR |
||
767 | i: INTEGER; |
||
768 | |||
769 | BEGIN |
||
770 | FOR i := 0 TO LEN(digit) - 1 DO |
||
771 | digit[i] := -1 |
||
772 | END; |
||
773 | |||
774 | FOR i := ORD("0") TO ORD("9") DO |
||
775 | digit[i] := i - ORD("0") |
||
776 | END; |
||
777 | |||
778 | FOR i := ORD("A") TO ORD("F") DO |
||
779 | digit[i] := i - ORD("A") + 10 |
||
780 | END |
||
781 | END init; |
||
782 | |||
783 | |||
784 | BEGIN |
||
785 | init |
||
7983 | leency | 786 | END ARITH.": |