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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 | |||
8097 | maxcodehac | 19 | opEQ* = 0; opNE* = 1; opLT* = 2; opLE* = 3; opGT* = 4; opGE* = 5; |
20 | opIN* = 6; opIS* = 7; |
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7597 | akron1 | 21 | |
8097 | maxcodehac | 22 | |
7597 | akron1 | 23 | TYPE |
24 | |||
25 | VALUE* = RECORD |
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26 | |||
27 | typ*: INTEGER; |
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28 | |||
29 | int: INTEGER; |
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30 | float: REAL; |
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31 | set: SET; |
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32 | bool: BOOLEAN; |
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33 | |||
34 | string*: AVLTREES.DATA |
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35 | |||
36 | END; |
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37 | |||
38 | |||
39 | VAR |
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40 | |||
41 | digit: ARRAY 256 OF INTEGER; |
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42 | |||
43 | |||
44 | PROCEDURE Int* (v: VALUE): INTEGER; |
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45 | VAR |
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46 | res: INTEGER; |
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47 | |||
48 | BEGIN |
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49 | |||
7696 | akron1 | 50 | CASE v.typ OF |
51 | |tINTEGER, tCHAR, tWCHAR: |
||
7597 | akron1 | 52 | res := v.int |
7696 | akron1 | 53 | |tSET: |
7693 | akron1 | 54 | res := UTILS.Long(ORD(v.set)) |
7696 | akron1 | 55 | |tBOOLEAN: |
7597 | akron1 | 56 | res := ORD(v.bool) |
57 | END |
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58 | |||
59 | RETURN res |
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60 | END Int; |
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61 | |||
62 | |||
63 | PROCEDURE getBool* (v: VALUE): BOOLEAN; |
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64 | BEGIN |
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65 | ASSERT(v.typ = tBOOLEAN); |
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66 | |||
67 | RETURN v.bool |
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68 | END getBool; |
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69 | |||
70 | |||
71 | PROCEDURE Float* (v: VALUE): REAL; |
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72 | BEGIN |
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73 | ASSERT(v.typ = tREAL); |
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74 | |||
75 | RETURN v.float |
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76 | END Float; |
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77 | |||
78 | |||
7983 | leency | 79 | PROCEDURE range* (i: VALUE; a, b: INTEGER): BOOLEAN; |
80 | RETURN (a <= i.int) & (i.int <= b) |
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81 | END range; |
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82 | |||
83 | |||
7597 | akron1 | 84 | PROCEDURE check* (v: VALUE): BOOLEAN; |
85 | VAR |
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7696 | akron1 | 86 | res: BOOLEAN; |
7597 | akron1 | 87 | |
88 | BEGIN |
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7696 | akron1 | 89 | CASE v.typ OF |
7983 | leency | 90 | |tINTEGER: res := range(v, UTILS.target.minInt, UTILS.target.maxInt) |
91 | |tCHAR: res := range(v, 0, 255) |
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92 | |tWCHAR: res := range(v, 0, 65535) |
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7696 | akron1 | 93 | |tREAL: res := (-UTILS.target.maxReal <= v.float) & (v.float <= UTILS.target.maxReal) |
7597 | akron1 | 94 | END |
95 | |||
7696 | akron1 | 96 | RETURN res |
7597 | akron1 | 97 | END check; |
98 | |||
99 | |||
100 | PROCEDURE isZero* (v: VALUE): BOOLEAN; |
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101 | VAR |
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102 | res: BOOLEAN; |
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7696 | akron1 | 103 | |
7597 | akron1 | 104 | BEGIN |
7696 | akron1 | 105 | CASE v.typ OF |
106 | |tINTEGER: res := v.int = 0 |
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107 | |tREAL: res := v.float = 0.0 |
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7597 | akron1 | 108 | END |
109 | |||
110 | RETURN res |
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111 | END isZero; |
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112 | |||
113 | |||
114 | PROCEDURE iconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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115 | VAR |
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116 | value: INTEGER; |
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117 | i: INTEGER; |
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118 | d: INTEGER; |
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119 | |||
120 | BEGIN |
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121 | error := 0; |
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122 | value := 0; |
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123 | |||
124 | i := 0; |
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125 | WHILE STRINGS.digit(s[i]) & (error = 0) DO |
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126 | d := digit[ORD(s[i])]; |
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127 | IF value <= (UTILS.maxint - d) DIV 10 THEN |
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128 | value := value * 10 + d; |
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129 | INC(i) |
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130 | ELSE |
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131 | error := 1 |
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132 | END |
||
133 | END; |
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134 | |||
135 | IF error = 0 THEN |
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136 | v.int := value; |
||
137 | v.typ := tINTEGER; |
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138 | IF ~check(v) THEN |
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139 | error := 1 |
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140 | END |
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141 | END |
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142 | |||
143 | END iconv; |
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144 | |||
145 | |||
146 | PROCEDURE hconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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147 | VAR |
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148 | value: INTEGER; |
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149 | i: INTEGER; |
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150 | n: INTEGER; |
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151 | d: INTEGER; |
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152 | |||
153 | BEGIN |
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154 | ASSERT(STRINGS.digit(s[0])); |
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155 | |||
156 | error := 0; |
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157 | value := 0; |
||
158 | |||
159 | n := -1; |
||
160 | i := 0; |
||
161 | WHILE (s[i] # "H") & (s[i] # "X") & (error = 0) DO |
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162 | |||
163 | d := digit[ORD(s[i])]; |
||
164 | IF (n = -1) & (d # 0) THEN |
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165 | n := i |
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166 | END; |
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167 | |||
7693 | akron1 | 168 | IF (n # -1) & (i - n + 1 > UTILS.target.maxHex) THEN |
7597 | akron1 | 169 | error := 2 |
170 | ELSE |
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171 | value := value * 16 + d; |
||
172 | INC(i) |
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173 | END |
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174 | |||
175 | END; |
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176 | |||
7693 | akron1 | 177 | value := UTILS.Long(value); |
7597 | akron1 | 178 | |
179 | IF (s[i] = "X") & (n # -1) & (i - n > 4) THEN |
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180 | error := 3 |
||
181 | END; |
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182 | |||
183 | IF error = 0 THEN |
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184 | v.int := value; |
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185 | IF s[i] = "X" THEN |
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186 | v.typ := tCHAR; |
||
187 | IF ~check(v) THEN |
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188 | v.typ := tWCHAR; |
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189 | IF ~check(v) THEN |
||
190 | error := 3 |
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191 | END |
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192 | END |
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193 | ELSE |
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194 | v.typ := tINTEGER; |
||
195 | IF ~check(v) THEN |
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196 | error := 2 |
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197 | END |
||
198 | END |
||
199 | END |
||
200 | |||
201 | END hconv; |
||
202 | |||
203 | |||
204 | PROCEDURE opFloat2 (VAR a: REAL; b: REAL; op: CHAR): BOOLEAN; |
||
205 | BEGIN |
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206 | CASE op OF |
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7983 | leency | 207 | |"+": a := a + b |
208 | |"-": a := a - b |
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209 | |"*": a := a * b |
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210 | |"/": a := a / b |
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7597 | akron1 | 211 | END |
212 | |||
7983 | leency | 213 | RETURN (-UTILS.maxreal <= a) & (a <= UTILS.maxreal) (* +inf > UTILS.maxreal *) |
7597 | akron1 | 214 | END opFloat2; |
215 | |||
216 | |||
217 | PROCEDURE fconv* (s: ARRAY OF CHAR; VAR v: VALUE; VAR error: INTEGER); |
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218 | VAR |
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219 | value: REAL; |
||
220 | exp10: REAL; |
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221 | i, n, d: INTEGER; |
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222 | minus: BOOLEAN; |
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223 | |||
224 | BEGIN |
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225 | error := 0; |
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226 | value := 0.0; |
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227 | exp10 := 10.0; |
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228 | minus := FALSE; |
||
229 | n := 0; |
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230 | |||
231 | i := 0; |
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232 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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233 | IF opFloat2(value, 10.0, "*") & opFloat2(value, FLT(digit[ORD(s[i])]), "+") THEN |
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234 | INC(i) |
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235 | ELSE |
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236 | error := 4 |
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237 | END |
||
238 | END; |
||
239 | |||
240 | INC(i); |
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241 | |||
242 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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243 | IF opFloat2(value, FLT(digit[ORD(s[i])]) / exp10, "+") & opFloat2(exp10, 10.0, "*") THEN |
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244 | INC(i) |
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245 | ELSE |
||
246 | error := 4 |
||
247 | END |
||
248 | END; |
||
249 | |||
250 | IF s[i] = "E" THEN |
||
251 | INC(i) |
||
252 | END; |
||
253 | |||
254 | IF (s[i] = "-") OR (s[i] = "+") THEN |
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255 | minus := s[i] = "-"; |
||
256 | INC(i) |
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257 | END; |
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258 | |||
259 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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260 | d := digit[ORD(s[i])]; |
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261 | IF n <= (UTILS.maxint - d) DIV 10 THEN |
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262 | n := n * 10 + d; |
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263 | INC(i) |
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264 | ELSE |
||
265 | error := 5 |
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266 | END |
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267 | END; |
||
268 | |||
269 | exp10 := 1.0; |
||
270 | WHILE (error = 0) & (n > 0) DO |
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271 | IF opFloat2(exp10, 10.0, "*") THEN |
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272 | DEC(n) |
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273 | ELSE |
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274 | error := 4 |
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275 | END |
||
276 | END; |
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277 | |||
278 | IF error = 0 THEN |
||
279 | IF minus THEN |
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280 | IF ~opFloat2(value, exp10, "/") THEN |
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281 | error := 4 |
||
282 | END |
||
283 | ELSE |
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284 | IF ~opFloat2(value, exp10, "*") THEN |
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285 | error := 4 |
||
286 | END |
||
287 | END |
||
288 | END; |
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289 | |||
290 | IF error = 0 THEN |
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291 | v.float := value; |
||
292 | v.typ := tREAL; |
||
293 | IF ~check(v) THEN |
||
294 | error := 4 |
||
295 | END |
||
296 | END |
||
297 | |||
298 | END fconv; |
||
299 | |||
300 | |||
301 | PROCEDURE setChar* (VAR v: VALUE; ord: INTEGER); |
||
302 | BEGIN |
||
303 | v.typ := tCHAR; |
||
304 | v.int := ord |
||
305 | END setChar; |
||
306 | |||
307 | |||
308 | PROCEDURE setWChar* (VAR v: VALUE; ord: INTEGER); |
||
309 | BEGIN |
||
310 | v.typ := tWCHAR; |
||
311 | v.int := ord |
||
312 | END setWChar; |
||
313 | |||
314 | |||
315 | PROCEDURE addInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
316 | VAR |
||
317 | error: BOOLEAN; |
||
318 | |||
319 | BEGIN |
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320 | IF (a > 0) & (b > 0) THEN |
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321 | error := a > UTILS.maxint - b |
||
322 | ELSIF (a < 0) & (b < 0) THEN |
||
323 | error := a < UTILS.minint - b |
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324 | ELSE |
||
325 | error := FALSE |
||
326 | END; |
||
327 | |||
328 | IF ~error THEN |
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329 | a := a + b |
||
330 | ELSE |
||
331 | a := 0 |
||
332 | END |
||
333 | |||
334 | RETURN ~error |
||
335 | END addInt; |
||
336 | |||
337 | |||
338 | PROCEDURE subInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
339 | VAR |
||
340 | error: BOOLEAN; |
||
341 | |||
342 | BEGIN |
||
343 | IF (a > 0) & (b < 0) THEN |
||
344 | error := a > UTILS.maxint + b |
||
345 | ELSIF (a < 0) & (b > 0) THEN |
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346 | error := a < UTILS.minint + b |
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347 | ELSIF (a = 0) & (b < 0) THEN |
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348 | error := b = UTILS.minint |
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349 | ELSE |
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350 | error := FALSE |
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351 | END; |
||
352 | |||
353 | IF ~error THEN |
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354 | a := a - b |
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355 | ELSE |
||
356 | a := 0 |
||
357 | END |
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358 | |||
359 | RETURN ~error |
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360 | END subInt; |
||
361 | |||
362 | |||
363 | PROCEDURE lg2 (x: INTEGER): INTEGER; |
||
364 | VAR |
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365 | n: INTEGER; |
||
366 | |||
367 | BEGIN |
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368 | ASSERT(x > 0); |
||
369 | |||
7983 | leency | 370 | n := UTILS.Log2(x); |
371 | IF n = -1 THEN |
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7597 | akron1 | 372 | n := 255 |
373 | END |
||
374 | |||
375 | RETURN n |
||
376 | END lg2; |
||
377 | |||
378 | |||
379 | PROCEDURE mulInt* (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
380 | VAR |
||
381 | error: BOOLEAN; |
||
382 | min, max: INTEGER; |
||
383 | |||
384 | BEGIN |
||
385 | min := UTILS.minint; |
||
386 | max := UTILS.maxint; |
||
387 | |||
388 | IF ((a > 1) & (b > 1)) OR ((a < 0) & (b < 0)) THEN |
||
389 | error := (a = min) OR (b = min) OR (ABS(a) > max DIV ABS(b)) |
||
390 | |||
391 | ELSIF ((a > 1) & (b < 0)) OR ((a < 0) & (b > 1)) THEN |
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392 | error := (a = min) OR (b = min); |
||
393 | IF ~error THEN |
||
394 | IF lg2(ABS(a)) + lg2(ABS(b)) >= UTILS.bit_depth THEN |
||
395 | error := ABS(a) > max DIV ABS(b) |
||
396 | END |
||
397 | END |
||
398 | |||
399 | ELSE |
||
400 | error := FALSE |
||
401 | END; |
||
402 | |||
403 | IF ~error THEN |
||
404 | a := a * b |
||
405 | ELSE |
||
406 | a := 0 |
||
407 | END |
||
408 | |||
409 | RETURN ~error |
||
410 | END mulInt; |
||
411 | |||
412 | |||
413 | PROCEDURE _ASR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 414 | RETURN ASR(UTILS.Long(x), n) |
7597 | akron1 | 415 | END _ASR; |
416 | |||
417 | |||
418 | PROCEDURE _LSR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 419 | RETURN UTILS.Long(LSR(UTILS.Short(x), n)) |
7597 | akron1 | 420 | END _LSR; |
421 | |||
422 | |||
423 | PROCEDURE _LSL (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 424 | RETURN UTILS.Long(LSL(x, n)) |
7597 | akron1 | 425 | END _LSL; |
426 | |||
427 | |||
428 | PROCEDURE _ROR1_32 (x: INTEGER): INTEGER; |
||
429 | BEGIN |
||
7693 | akron1 | 430 | x := UTILS.Short(x); |
7597 | akron1 | 431 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 31))) |
7693 | akron1 | 432 | RETURN UTILS.Long(x) |
7597 | akron1 | 433 | END _ROR1_32; |
434 | |||
435 | |||
7693 | akron1 | 436 | PROCEDURE _ROR1_16 (x: INTEGER): INTEGER; |
437 | BEGIN |
||
438 | x := x MOD 65536; |
||
439 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 15))) |
||
440 | RETURN UTILS.Long(x) |
||
441 | END _ROR1_16; |
||
442 | |||
443 | |||
7597 | akron1 | 444 | PROCEDURE _ROR (x, n: INTEGER): INTEGER; |
445 | BEGIN |
||
7693 | akron1 | 446 | |
447 | CASE UTILS.bit_diff OF |
||
448 | |0: x := ROR(x, n) |
||
449 | |16, 48: |
||
450 | n := n MOD 16; |
||
451 | WHILE n > 0 DO |
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452 | x := _ROR1_16(x); |
||
453 | DEC(n) |
||
454 | END |
||
455 | |32: |
||
7597 | akron1 | 456 | n := n MOD 32; |
457 | WHILE n > 0 DO |
||
458 | x := _ROR1_32(x); |
||
459 | DEC(n) |
||
460 | END |
||
461 | END |
||
462 | |||
463 | RETURN x |
||
464 | END _ROR; |
||
465 | |||
466 | |||
467 | PROCEDURE opInt* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
468 | VAR |
||
469 | success: BOOLEAN; |
||
470 | |||
471 | BEGIN |
||
472 | success := TRUE; |
||
473 | |||
474 | CASE op OF |
||
475 | |"+": success := addInt(a.int, b.int) |
||
476 | |"-": success := subInt(a.int, b.int) |
||
477 | |"*": success := mulInt(a.int, b.int) |
||
478 | |"/": success := FALSE |
||
7983 | leency | 479 | |"D": a.int := a.int DIV b.int |
7597 | akron1 | 480 | |"M": a.int := a.int MOD b.int |
481 | |"L": a.int := _LSL(a.int, b.int) |
||
482 | |"A": a.int := _ASR(a.int, b.int) |
||
483 | |"O": a.int := _ROR(a.int, b.int) |
||
484 | |"R": a.int := _LSR(a.int, b.int) |
||
485 | |"m": a.int := MIN(a.int, b.int) |
||
486 | |"x": a.int := MAX(a.int, b.int) |
||
487 | END; |
||
488 | a.typ := tINTEGER |
||
489 | |||
490 | RETURN success & check(a) |
||
491 | END opInt; |
||
492 | |||
493 | |||
494 | PROCEDURE charToStr* (c: VALUE; VAR s: ARRAY OF CHAR); |
||
495 | BEGIN |
||
496 | s[0] := CHR(c.int); |
||
497 | s[1] := 0X |
||
498 | END charToStr; |
||
499 | |||
500 | |||
501 | PROCEDURE opSet* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
502 | BEGIN |
||
503 | CASE op OF |
||
504 | |"+": a.set := a.set + b.set |
||
505 | |"-": a.set := a.set - b.set |
||
506 | |"*": a.set := a.set * b.set |
||
507 | |"/": a.set := a.set / b.set |
||
508 | END; |
||
509 | a.typ := tSET |
||
510 | END opSet; |
||
511 | |||
512 | |||
513 | PROCEDURE opFloat* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
514 | BEGIN |
||
515 | a.typ := tREAL |
||
516 | RETURN opFloat2(a.float, b.float, op) & check(a) |
||
517 | END opFloat; |
||
518 | |||
519 | |||
520 | PROCEDURE ord* (VAR v: VALUE); |
||
521 | BEGIN |
||
522 | CASE v.typ OF |
||
523 | |tCHAR, tWCHAR: |
||
524 | |tBOOLEAN: v.int := ORD(v.bool) |
||
7693 | akron1 | 525 | |tSET: v.int := UTILS.Long(ORD(v.set)) |
7597 | akron1 | 526 | END; |
527 | v.typ := tINTEGER |
||
528 | END ord; |
||
529 | |||
530 | |||
531 | PROCEDURE odd* (VAR v: VALUE); |
||
532 | BEGIN |
||
533 | v.typ := tBOOLEAN; |
||
534 | v.bool := ODD(v.int) |
||
535 | END odd; |
||
536 | |||
537 | |||
538 | PROCEDURE bits* (VAR v: VALUE); |
||
539 | BEGIN |
||
540 | v.typ := tSET; |
||
541 | v.set := BITS(v.int) |
||
542 | END bits; |
||
543 | |||
544 | |||
545 | PROCEDURE abs* (VAR v: VALUE): BOOLEAN; |
||
546 | VAR |
||
547 | res: BOOLEAN; |
||
548 | |||
549 | BEGIN |
||
7693 | akron1 | 550 | res := FALSE; |
7597 | akron1 | 551 | |
552 | CASE v.typ OF |
||
553 | |tREAL: |
||
554 | v.float := ABS(v.float); |
||
555 | res := TRUE |
||
556 | |tINTEGER: |
||
557 | IF v.int # UTILS.minint THEN |
||
558 | v.int := ABS(v.int); |
||
559 | res := TRUE |
||
560 | END |
||
7693 | akron1 | 561 | END |
562 | |||
7597 | akron1 | 563 | RETURN res |
564 | END abs; |
||
565 | |||
566 | |||
567 | PROCEDURE floor* (VAR v: VALUE): BOOLEAN; |
||
568 | VAR |
||
569 | res: BOOLEAN; |
||
570 | |||
571 | BEGIN |
||
572 | v.typ := tINTEGER; |
||
573 | res := (FLT(UTILS.minint) <= v.float) & (v.float <= FLT(UTILS.maxint)); |
||
574 | IF res THEN |
||
575 | v.int := FLOOR(v.float) |
||
576 | END |
||
577 | |||
578 | RETURN res |
||
579 | END floor; |
||
580 | |||
581 | |||
582 | PROCEDURE flt* (VAR v: VALUE); |
||
583 | BEGIN |
||
584 | v.typ := tREAL; |
||
585 | v.float := FLT(v.int) |
||
586 | END flt; |
||
587 | |||
588 | |||
589 | PROCEDURE neg* (VAR v: VALUE): BOOLEAN; |
||
590 | VAR |
||
591 | z: VALUE; |
||
592 | res: BOOLEAN; |
||
593 | |||
594 | BEGIN |
||
595 | res := TRUE; |
||
596 | |||
597 | z.typ := tINTEGER; |
||
598 | z.int := 0; |
||
599 | |||
600 | CASE v.typ OF |
||
601 | |tREAL: v.float := -v.float |
||
602 | |tSET: v.set := -v.set |
||
603 | |tINTEGER: res := opInt(z, v, "-"); v := z |
||
604 | |tBOOLEAN: v.bool := ~v.bool |
||
605 | END |
||
606 | |||
607 | RETURN res |
||
608 | END neg; |
||
609 | |||
610 | |||
611 | PROCEDURE setbool* (VAR v: VALUE; b: BOOLEAN); |
||
612 | BEGIN |
||
613 | v.bool := b; |
||
614 | v.typ := tBOOLEAN |
||
615 | END setbool; |
||
616 | |||
617 | |||
618 | PROCEDURE opBoolean* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
619 | BEGIN |
||
620 | CASE op OF |
||
621 | |"&": a.bool := a.bool & b.bool |
||
622 | |"|": a.bool := a.bool OR b.bool |
||
623 | END; |
||
624 | a.typ := tBOOLEAN |
||
625 | END opBoolean; |
||
626 | |||
627 | |||
628 | PROCEDURE less (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
629 | VAR |
||
630 | res: BOOLEAN; |
||
631 | |||
632 | BEGIN |
||
633 | res := FALSE; |
||
634 | |||
635 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
636 | CASE v.typ OF |
||
637 | |tINTEGER, |
||
638 | tWCHAR, |
||
639 | tCHAR: res := v.int < v2.int |
||
640 | |tREAL: res := v.float < v2.float |
||
641 | |tBOOLEAN, |
||
642 | tSET: error := 1 |
||
643 | END |
||
644 | ELSE |
||
645 | error := 1 |
||
646 | END |
||
647 | |||
648 | RETURN res |
||
649 | END less; |
||
650 | |||
651 | |||
652 | PROCEDURE equal (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
653 | VAR |
||
654 | res: BOOLEAN; |
||
655 | |||
656 | BEGIN |
||
657 | res := FALSE; |
||
658 | |||
659 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
660 | CASE v.typ OF |
||
661 | |tINTEGER, |
||
662 | tWCHAR, |
||
663 | tCHAR: res := v.int = v2.int |
||
664 | |tREAL: res := v.float = v2.float |
||
665 | |tBOOLEAN: res := v.bool = v2.bool |
||
666 | |tSET: res := v.set = v2.set |
||
667 | END |
||
668 | ELSE |
||
669 | error := 1 |
||
670 | END |
||
671 | |||
672 | RETURN res |
||
673 | END equal; |
||
674 | |||
675 | |||
8097 | maxcodehac | 676 | PROCEDURE relation* (VAR v: VALUE; v2: VALUE; op: INTEGER; VAR error: INTEGER); |
7597 | akron1 | 677 | VAR |
678 | res: BOOLEAN; |
||
679 | |||
680 | BEGIN |
||
681 | error := 0; |
||
682 | |||
683 | res := FALSE; |
||
684 | |||
8097 | maxcodehac | 685 | CASE op OF |
7597 | akron1 | 686 | |
8097 | maxcodehac | 687 | |opEQ: |
7597 | akron1 | 688 | res := equal(v, v2, error) |
689 | |||
8097 | maxcodehac | 690 | |opNE: |
7597 | akron1 | 691 | res := ~equal(v, v2, error) |
692 | |||
8097 | maxcodehac | 693 | |opLT: |
694 | res := less(v, v2, error) |
||
7597 | akron1 | 695 | |
8097 | maxcodehac | 696 | |opLE: |
697 | res := less(v, v2, error); |
||
698 | IF error = 0 THEN |
||
699 | res := equal(v, v2, error) OR res |
||
7597 | akron1 | 700 | END |
701 | |||
8097 | maxcodehac | 702 | |opGE: |
703 | res := ~less(v, v2, error) |
||
704 | |||
705 | |opGT: |
||
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 | |||
712 | |opIN: |
||
7597 | akron1 | 713 | IF (v.typ = tINTEGER) & (v2.typ = tSET) THEN |
7693 | akron1 | 714 | IF range(v, 0, UTILS.target.maxSet) THEN |
7597 | akron1 | 715 | res := v.int IN v2.set |
716 | ELSE |
||
717 | error := 2 |
||
718 | END |
||
719 | ELSE |
||
720 | error := 1 |
||
721 | END |
||
722 | |||
723 | END; |
||
724 | |||
725 | IF error = 0 THEN |
||
726 | v.bool := res; |
||
727 | v.typ := tBOOLEAN |
||
728 | END |
||
729 | |||
730 | END relation; |
||
731 | |||
732 | |||
733 | PROCEDURE emptySet* (VAR v: VALUE); |
||
734 | BEGIN |
||
735 | v.typ := tSET; |
||
736 | v.set := {} |
||
737 | END emptySet; |
||
738 | |||
739 | |||
740 | PROCEDURE constrSet* (VAR v: VALUE; a, b: VALUE); |
||
741 | BEGIN |
||
742 | v.typ := tSET; |
||
743 | v.set := {a.int .. b.int} |
||
744 | END constrSet; |
||
745 | |||
746 | |||
747 | PROCEDURE getInt* (v: VALUE): INTEGER; |
||
748 | BEGIN |
||
749 | ASSERT(check(v)) |
||
750 | |||
751 | RETURN v.int |
||
752 | END getInt; |
||
753 | |||
754 | |||
755 | PROCEDURE setInt* (VAR v: VALUE; i: INTEGER): BOOLEAN; |
||
756 | BEGIN |
||
757 | v.int := i; |
||
758 | v.typ := tINTEGER |
||
759 | |||
760 | RETURN check(v) |
||
761 | END setInt; |
||
762 | |||
763 | |||
8097 | maxcodehac | 764 | PROCEDURE concat* (VAR s: ARRAY OF CHAR; s1: ARRAY OF CHAR): BOOLEAN; |
765 | VAR |
||
766 | res: BOOLEAN; |
||
767 | |||
768 | BEGIN |
||
769 | res := LENGTH(s) + LENGTH(s1) < LEN(s); |
||
770 | IF res THEN |
||
771 | STRINGS.append(s, s1) |
||
772 | END |
||
773 | |||
774 | RETURN res |
||
775 | END concat; |
||
776 | |||
777 | |||
7597 | akron1 | 778 | PROCEDURE init; |
779 | VAR |
||
780 | i: INTEGER; |
||
781 | |||
782 | BEGIN |
||
783 | FOR i := 0 TO LEN(digit) - 1 DO |
||
784 | digit[i] := -1 |
||
785 | END; |
||
786 | |||
787 | FOR i := ORD("0") TO ORD("9") DO |
||
788 | digit[i] := i - ORD("0") |
||
789 | END; |
||
790 | |||
791 | FOR i := ORD("A") TO ORD("F") DO |
||
792 | digit[i] := i - ORD("A") + 10 |
||
793 | END |
||
794 | END init; |
||
795 | |||
796 | |||
797 | BEGIN |
||
798 | init |
||
7983 | leency | 799 | END ARITH.>>>=>=>>>>>>>>>>>>=>=>=>=>=>=>=>=> |