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Rev | Author | Line No. | Line |
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7983 | leency | 1 | (* |
7597 | akron1 | 2 | BSD 2-Clause License |
3 | |||
8859 | leency | 4 | Copyright (c) 2018-2021, Anton Krotov |
7597 | akron1 | 5 | All rights reserved. |
6 | *) |
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7 | |||
8 | MODULE ARITH; |
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9 | |||
8859 | leency | 10 | IMPORT STRINGS, UTILS, LISTS; |
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 | |||
8859 | leency | 34 | string*: LISTS.ITEM |
7597 | akron1 | 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; |
||
47 | |||
48 | BEGIN |
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49 | |||
7696 | akron1 | 50 | CASE v.typ OF |
51 | |tINTEGER, tCHAR, tWCHAR: |
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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 |
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133 | END; |
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134 | |||
135 | IF error = 0 THEN |
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136 | v.int := value; |
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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; |
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160 | i := 0; |
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8859 | leency | 161 | WHILE (s[i] # "H") & (s[i] # "X") & (s[i] # "h") & (s[i] # "x") & (error = 0) DO |
7597 | akron1 | 162 | |
163 | d := digit[ORD(s[i])]; |
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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 | |
8859 | leency | 179 | IF ((s[i] = "X") OR (s[i] = "x")) & (n # -1) & (i - n > 4) THEN |
7597 | akron1 | 180 | error := 3 |
181 | END; |
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182 | |||
183 | IF error = 0 THEN |
||
184 | v.int := value; |
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8859 | leency | 185 | IF (s[i] = "X") OR (s[i] = "x") THEN |
7597 | akron1 | 186 | v.typ := tCHAR; |
187 | IF ~check(v) THEN |
||
188 | v.typ := tWCHAR; |
||
189 | IF ~check(v) THEN |
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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 |
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198 | END |
||
199 | END |
||
200 | |||
201 | END hconv; |
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202 | |||
203 | |||
204 | PROCEDURE opFloat2 (VAR a: REAL; b: REAL; op: CHAR): BOOLEAN; |
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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; |
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8859 | leency | 220 | frac: REAL; |
7597 | akron1 | 221 | exp10: REAL; |
222 | i, n, d: INTEGER; |
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223 | minus: BOOLEAN; |
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224 | |||
225 | BEGIN |
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226 | error := 0; |
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227 | value := 0.0; |
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8859 | leency | 228 | frac := 0.0; |
229 | exp10 := 1.0; |
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7597 | akron1 | 230 | minus := FALSE; |
231 | n := 0; |
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232 | |||
233 | i := 0; |
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234 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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235 | IF opFloat2(value, 10.0, "*") & opFloat2(value, FLT(digit[ORD(s[i])]), "+") THEN |
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236 | INC(i) |
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237 | ELSE |
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238 | error := 4 |
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239 | END |
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240 | END; |
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241 | |||
242 | INC(i); |
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243 | |||
244 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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8859 | leency | 245 | IF opFloat2(frac, 10.0, "*") & opFloat2(frac, FLT(digit[ORD(s[i])]), "+") THEN |
246 | exp10 := exp10 * 10.0; |
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7597 | akron1 | 247 | INC(i) |
248 | ELSE |
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249 | error := 4 |
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250 | END |
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251 | END; |
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252 | |||
8859 | leency | 253 | IF ~opFloat2(value, frac / exp10, "+") THEN |
254 | error := 4 |
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255 | END; |
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256 | |||
257 | IF (s[i] = "E") OR (s[i] = "e") THEN |
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7597 | akron1 | 258 | INC(i) |
259 | END; |
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260 | |||
261 | IF (s[i] = "-") OR (s[i] = "+") THEN |
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262 | minus := s[i] = "-"; |
||
263 | INC(i) |
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264 | END; |
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265 | |||
266 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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267 | d := digit[ORD(s[i])]; |
||
268 | IF n <= (UTILS.maxint - d) DIV 10 THEN |
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269 | n := n * 10 + d; |
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270 | INC(i) |
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271 | ELSE |
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272 | error := 5 |
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273 | END |
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274 | END; |
||
275 | |||
276 | exp10 := 1.0; |
||
277 | WHILE (error = 0) & (n > 0) DO |
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278 | IF opFloat2(exp10, 10.0, "*") THEN |
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279 | DEC(n) |
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280 | ELSE |
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281 | error := 4 |
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282 | END |
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283 | END; |
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284 | |||
285 | IF error = 0 THEN |
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286 | IF minus THEN |
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287 | IF ~opFloat2(value, exp10, "/") THEN |
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288 | error := 4 |
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289 | END |
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290 | ELSE |
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291 | IF ~opFloat2(value, exp10, "*") THEN |
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292 | error := 4 |
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293 | END |
||
294 | END |
||
295 | END; |
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296 | |||
297 | IF error = 0 THEN |
||
298 | v.float := value; |
||
299 | v.typ := tREAL; |
||
300 | IF ~check(v) THEN |
||
301 | error := 4 |
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302 | END |
||
303 | END |
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304 | |||
305 | END fconv; |
||
306 | |||
307 | |||
308 | PROCEDURE setChar* (VAR v: VALUE; ord: INTEGER); |
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309 | BEGIN |
||
310 | v.typ := tCHAR; |
||
311 | v.int := ord |
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312 | END setChar; |
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313 | |||
314 | |||
315 | PROCEDURE setWChar* (VAR v: VALUE; ord: INTEGER); |
||
316 | BEGIN |
||
317 | v.typ := tWCHAR; |
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318 | v.int := ord |
||
319 | END setWChar; |
||
320 | |||
321 | |||
322 | PROCEDURE addInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
323 | VAR |
||
324 | error: BOOLEAN; |
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325 | |||
326 | BEGIN |
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327 | IF (a > 0) & (b > 0) THEN |
||
328 | error := a > UTILS.maxint - b |
||
329 | ELSIF (a < 0) & (b < 0) THEN |
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330 | error := a < UTILS.minint - b |
||
331 | ELSE |
||
332 | error := FALSE |
||
333 | END; |
||
334 | |||
335 | IF ~error THEN |
||
336 | a := a + b |
||
337 | ELSE |
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338 | a := 0 |
||
339 | END |
||
340 | |||
341 | RETURN ~error |
||
342 | END addInt; |
||
343 | |||
344 | |||
345 | PROCEDURE subInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
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346 | VAR |
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347 | error: BOOLEAN; |
||
348 | |||
349 | BEGIN |
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350 | IF (a > 0) & (b < 0) THEN |
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351 | error := a > UTILS.maxint + b |
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352 | ELSIF (a < 0) & (b > 0) THEN |
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353 | error := a < UTILS.minint + b |
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354 | ELSIF (a = 0) & (b < 0) THEN |
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355 | error := b = UTILS.minint |
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356 | ELSE |
||
357 | error := FALSE |
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358 | END; |
||
359 | |||
360 | IF ~error THEN |
||
361 | a := a - b |
||
362 | ELSE |
||
363 | a := 0 |
||
364 | END |
||
365 | |||
366 | RETURN ~error |
||
367 | END subInt; |
||
368 | |||
369 | |||
370 | PROCEDURE lg2 (x: INTEGER): INTEGER; |
||
371 | VAR |
||
372 | n: INTEGER; |
||
373 | |||
374 | BEGIN |
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375 | ASSERT(x > 0); |
||
376 | |||
7983 | leency | 377 | n := UTILS.Log2(x); |
378 | IF n = -1 THEN |
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7597 | akron1 | 379 | n := 255 |
380 | END |
||
381 | |||
382 | RETURN n |
||
383 | END lg2; |
||
384 | |||
385 | |||
386 | PROCEDURE mulInt* (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
387 | VAR |
||
388 | error: BOOLEAN; |
||
389 | min, max: INTEGER; |
||
390 | |||
391 | BEGIN |
||
392 | min := UTILS.minint; |
||
393 | max := UTILS.maxint; |
||
394 | |||
395 | IF ((a > 1) & (b > 1)) OR ((a < 0) & (b < 0)) THEN |
||
396 | error := (a = min) OR (b = min) OR (ABS(a) > max DIV ABS(b)) |
||
397 | |||
398 | ELSIF ((a > 1) & (b < 0)) OR ((a < 0) & (b > 1)) THEN |
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399 | error := (a = min) OR (b = min); |
||
400 | IF ~error THEN |
||
401 | IF lg2(ABS(a)) + lg2(ABS(b)) >= UTILS.bit_depth THEN |
||
402 | error := ABS(a) > max DIV ABS(b) |
||
403 | END |
||
404 | END |
||
405 | |||
406 | ELSE |
||
407 | error := FALSE |
||
408 | END; |
||
409 | |||
410 | IF ~error THEN |
||
411 | a := a * b |
||
412 | ELSE |
||
413 | a := 0 |
||
414 | END |
||
415 | |||
416 | RETURN ~error |
||
417 | END mulInt; |
||
418 | |||
419 | |||
420 | PROCEDURE _ASR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 421 | RETURN ASR(UTILS.Long(x), n) |
7597 | akron1 | 422 | END _ASR; |
423 | |||
424 | |||
425 | PROCEDURE _LSR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 426 | RETURN UTILS.Long(LSR(UTILS.Short(x), n)) |
7597 | akron1 | 427 | END _LSR; |
428 | |||
429 | |||
430 | PROCEDURE _LSL (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 431 | RETURN UTILS.Long(LSL(x, n)) |
7597 | akron1 | 432 | END _LSL; |
433 | |||
434 | |||
435 | PROCEDURE _ROR1_32 (x: INTEGER): INTEGER; |
||
436 | BEGIN |
||
7693 | akron1 | 437 | x := UTILS.Short(x); |
7597 | akron1 | 438 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 31))) |
7693 | akron1 | 439 | RETURN UTILS.Long(x) |
7597 | akron1 | 440 | END _ROR1_32; |
441 | |||
442 | |||
7693 | akron1 | 443 | PROCEDURE _ROR1_16 (x: INTEGER): INTEGER; |
444 | BEGIN |
||
445 | x := x MOD 65536; |
||
446 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 15))) |
||
447 | RETURN UTILS.Long(x) |
||
448 | END _ROR1_16; |
||
449 | |||
450 | |||
7597 | akron1 | 451 | PROCEDURE _ROR (x, n: INTEGER): INTEGER; |
452 | BEGIN |
||
7693 | akron1 | 453 | |
454 | CASE UTILS.bit_diff OF |
||
455 | |0: x := ROR(x, n) |
||
456 | |16, 48: |
||
457 | n := n MOD 16; |
||
458 | WHILE n > 0 DO |
||
459 | x := _ROR1_16(x); |
||
460 | DEC(n) |
||
461 | END |
||
462 | |32: |
||
7597 | akron1 | 463 | n := n MOD 32; |
464 | WHILE n > 0 DO |
||
465 | x := _ROR1_32(x); |
||
466 | DEC(n) |
||
467 | END |
||
468 | END |
||
469 | |||
470 | RETURN x |
||
471 | END _ROR; |
||
472 | |||
473 | |||
474 | PROCEDURE opInt* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
475 | VAR |
||
476 | success: BOOLEAN; |
||
477 | |||
478 | BEGIN |
||
479 | success := TRUE; |
||
480 | |||
481 | CASE op OF |
||
482 | |"+": success := addInt(a.int, b.int) |
||
483 | |"-": success := subInt(a.int, b.int) |
||
484 | |"*": success := mulInt(a.int, b.int) |
||
485 | |"/": success := FALSE |
||
7983 | leency | 486 | |"D": a.int := a.int DIV b.int |
7597 | akron1 | 487 | |"M": a.int := a.int MOD b.int |
488 | |"L": a.int := _LSL(a.int, b.int) |
||
489 | |"A": a.int := _ASR(a.int, b.int) |
||
490 | |"O": a.int := _ROR(a.int, b.int) |
||
491 | |"R": a.int := _LSR(a.int, b.int) |
||
492 | |"m": a.int := MIN(a.int, b.int) |
||
493 | |"x": a.int := MAX(a.int, b.int) |
||
494 | END; |
||
495 | a.typ := tINTEGER |
||
496 | |||
497 | RETURN success & check(a) |
||
498 | END opInt; |
||
499 | |||
500 | |||
501 | PROCEDURE charToStr* (c: VALUE; VAR s: ARRAY OF CHAR); |
||
502 | BEGIN |
||
503 | s[0] := CHR(c.int); |
||
504 | s[1] := 0X |
||
505 | END charToStr; |
||
506 | |||
507 | |||
508 | PROCEDURE opSet* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
509 | BEGIN |
||
510 | CASE op OF |
||
511 | |"+": a.set := a.set + b.set |
||
512 | |"-": a.set := a.set - b.set |
||
513 | |"*": a.set := a.set * b.set |
||
514 | |"/": a.set := a.set / b.set |
||
515 | END; |
||
516 | a.typ := tSET |
||
517 | END opSet; |
||
518 | |||
519 | |||
520 | PROCEDURE opFloat* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
521 | BEGIN |
||
522 | a.typ := tREAL |
||
523 | RETURN opFloat2(a.float, b.float, op) & check(a) |
||
524 | END opFloat; |
||
525 | |||
526 | |||
527 | PROCEDURE ord* (VAR v: VALUE); |
||
528 | BEGIN |
||
529 | CASE v.typ OF |
||
530 | |tCHAR, tWCHAR: |
||
531 | |tBOOLEAN: v.int := ORD(v.bool) |
||
7693 | akron1 | 532 | |tSET: v.int := UTILS.Long(ORD(v.set)) |
7597 | akron1 | 533 | END; |
534 | v.typ := tINTEGER |
||
535 | END ord; |
||
536 | |||
537 | |||
538 | PROCEDURE odd* (VAR v: VALUE); |
||
539 | BEGIN |
||
540 | v.typ := tBOOLEAN; |
||
541 | v.bool := ODD(v.int) |
||
542 | END odd; |
||
543 | |||
544 | |||
545 | PROCEDURE bits* (VAR v: VALUE); |
||
546 | BEGIN |
||
547 | v.typ := tSET; |
||
548 | v.set := BITS(v.int) |
||
549 | END bits; |
||
550 | |||
551 | |||
552 | PROCEDURE abs* (VAR v: VALUE): BOOLEAN; |
||
553 | VAR |
||
554 | res: BOOLEAN; |
||
555 | |||
556 | BEGIN |
||
7693 | akron1 | 557 | res := FALSE; |
7597 | akron1 | 558 | |
559 | CASE v.typ OF |
||
560 | |tREAL: |
||
561 | v.float := ABS(v.float); |
||
562 | res := TRUE |
||
563 | |tINTEGER: |
||
564 | IF v.int # UTILS.minint THEN |
||
565 | v.int := ABS(v.int); |
||
566 | res := TRUE |
||
567 | END |
||
7693 | akron1 | 568 | END |
569 | |||
7597 | akron1 | 570 | RETURN res |
571 | END abs; |
||
572 | |||
573 | |||
574 | PROCEDURE floor* (VAR v: VALUE): BOOLEAN; |
||
575 | VAR |
||
576 | res: BOOLEAN; |
||
577 | |||
578 | BEGIN |
||
579 | v.typ := tINTEGER; |
||
580 | res := (FLT(UTILS.minint) <= v.float) & (v.float <= FLT(UTILS.maxint)); |
||
581 | IF res THEN |
||
582 | v.int := FLOOR(v.float) |
||
583 | END |
||
584 | |||
585 | RETURN res |
||
586 | END floor; |
||
587 | |||
588 | |||
589 | PROCEDURE flt* (VAR v: VALUE); |
||
590 | BEGIN |
||
591 | v.typ := tREAL; |
||
592 | v.float := FLT(v.int) |
||
593 | END flt; |
||
594 | |||
595 | |||
596 | PROCEDURE neg* (VAR v: VALUE): BOOLEAN; |
||
597 | VAR |
||
598 | z: VALUE; |
||
599 | res: BOOLEAN; |
||
600 | |||
601 | BEGIN |
||
602 | res := TRUE; |
||
603 | |||
604 | z.typ := tINTEGER; |
||
605 | z.int := 0; |
||
606 | |||
607 | CASE v.typ OF |
||
608 | |tREAL: v.float := -v.float |
||
609 | |tSET: v.set := -v.set |
||
610 | |tINTEGER: res := opInt(z, v, "-"); v := z |
||
611 | |tBOOLEAN: v.bool := ~v.bool |
||
612 | END |
||
613 | |||
614 | RETURN res |
||
615 | END neg; |
||
616 | |||
617 | |||
618 | PROCEDURE setbool* (VAR v: VALUE; b: BOOLEAN); |
||
619 | BEGIN |
||
620 | v.bool := b; |
||
621 | v.typ := tBOOLEAN |
||
622 | END setbool; |
||
623 | |||
624 | |||
625 | PROCEDURE opBoolean* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
626 | BEGIN |
||
627 | CASE op OF |
||
628 | |"&": a.bool := a.bool & b.bool |
||
629 | |"|": a.bool := a.bool OR b.bool |
||
630 | END; |
||
631 | a.typ := tBOOLEAN |
||
632 | END opBoolean; |
||
633 | |||
634 | |||
635 | PROCEDURE less (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
636 | VAR |
||
637 | res: BOOLEAN; |
||
638 | |||
639 | BEGIN |
||
640 | res := FALSE; |
||
641 | |||
642 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
643 | CASE v.typ OF |
||
644 | |tINTEGER, |
||
645 | tWCHAR, |
||
646 | tCHAR: res := v.int < v2.int |
||
647 | |tREAL: res := v.float < v2.float |
||
648 | |tBOOLEAN, |
||
649 | tSET: error := 1 |
||
650 | END |
||
651 | ELSE |
||
652 | error := 1 |
||
653 | END |
||
654 | |||
655 | RETURN res |
||
656 | END less; |
||
657 | |||
658 | |||
659 | PROCEDURE equal (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
660 | VAR |
||
661 | res: BOOLEAN; |
||
662 | |||
663 | BEGIN |
||
664 | res := FALSE; |
||
665 | |||
666 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
667 | CASE v.typ OF |
||
668 | |tINTEGER, |
||
669 | tWCHAR, |
||
670 | tCHAR: res := v.int = v2.int |
||
671 | |tREAL: res := v.float = v2.float |
||
672 | |tBOOLEAN: res := v.bool = v2.bool |
||
673 | |tSET: res := v.set = v2.set |
||
674 | END |
||
675 | ELSE |
||
676 | error := 1 |
||
677 | END |
||
678 | |||
679 | RETURN res |
||
680 | END equal; |
||
681 | |||
682 | |||
8097 | maxcodehac | 683 | PROCEDURE relation* (VAR v: VALUE; v2: VALUE; op: INTEGER; VAR error: INTEGER); |
7597 | akron1 | 684 | VAR |
685 | res: BOOLEAN; |
||
686 | |||
687 | BEGIN |
||
688 | error := 0; |
||
689 | |||
690 | res := FALSE; |
||
691 | |||
8097 | maxcodehac | 692 | CASE op OF |
7597 | akron1 | 693 | |
8097 | maxcodehac | 694 | |opEQ: |
7597 | akron1 | 695 | res := equal(v, v2, error) |
696 | |||
8097 | maxcodehac | 697 | |opNE: |
7597 | akron1 | 698 | res := ~equal(v, v2, error) |
699 | |||
8097 | maxcodehac | 700 | |opLT: |
701 | res := less(v, v2, error) |
||
7597 | akron1 | 702 | |
8097 | maxcodehac | 703 | |opLE: |
704 | res := less(v, v2, error); |
||
705 | IF error = 0 THEN |
||
706 | res := equal(v, v2, error) OR res |
||
7597 | akron1 | 707 | END |
708 | |||
8097 | maxcodehac | 709 | |opGE: |
710 | res := ~less(v, v2, error) |
||
711 | |||
712 | |opGT: |
||
713 | res := less(v, v2, error); |
||
714 | IF error = 0 THEN |
||
715 | res := equal(v, v2, error) OR res |
||
716 | END; |
||
717 | res := ~res |
||
718 | |||
719 | |opIN: |
||
7597 | akron1 | 720 | IF (v.typ = tINTEGER) & (v2.typ = tSET) THEN |
7693 | akron1 | 721 | IF range(v, 0, UTILS.target.maxSet) THEN |
7597 | akron1 | 722 | res := v.int IN v2.set |
723 | ELSE |
||
724 | error := 2 |
||
725 | END |
||
726 | ELSE |
||
727 | error := 1 |
||
728 | END |
||
729 | |||
730 | END; |
||
731 | |||
732 | IF error = 0 THEN |
||
733 | v.bool := res; |
||
734 | v.typ := tBOOLEAN |
||
735 | END |
||
736 | |||
737 | END relation; |
||
738 | |||
739 | |||
740 | PROCEDURE emptySet* (VAR v: VALUE); |
||
741 | BEGIN |
||
742 | v.typ := tSET; |
||
743 | v.set := {} |
||
744 | END emptySet; |
||
745 | |||
746 | |||
747 | PROCEDURE constrSet* (VAR v: VALUE; a, b: VALUE); |
||
748 | BEGIN |
||
749 | v.typ := tSET; |
||
750 | v.set := {a.int .. b.int} |
||
751 | END constrSet; |
||
752 | |||
753 | |||
754 | PROCEDURE getInt* (v: VALUE): INTEGER; |
||
755 | BEGIN |
||
756 | ASSERT(check(v)) |
||
757 | |||
758 | RETURN v.int |
||
759 | END getInt; |
||
760 | |||
761 | |||
762 | PROCEDURE setInt* (VAR v: VALUE; i: INTEGER): BOOLEAN; |
||
763 | BEGIN |
||
764 | v.int := i; |
||
765 | v.typ := tINTEGER |
||
766 | |||
767 | RETURN check(v) |
||
768 | END setInt; |
||
769 | |||
770 | |||
8097 | maxcodehac | 771 | PROCEDURE concat* (VAR s: ARRAY OF CHAR; s1: ARRAY OF CHAR): BOOLEAN; |
772 | VAR |
||
773 | res: BOOLEAN; |
||
774 | |||
775 | BEGIN |
||
776 | res := LENGTH(s) + LENGTH(s1) < LEN(s); |
||
777 | IF res THEN |
||
778 | STRINGS.append(s, s1) |
||
779 | END |
||
780 | |||
781 | RETURN res |
||
782 | END concat; |
||
783 | |||
784 | |||
7597 | akron1 | 785 | PROCEDURE init; |
786 | VAR |
||
787 | i: INTEGER; |
||
788 | |||
789 | BEGIN |
||
790 | FOR i := 0 TO LEN(digit) - 1 DO |
||
791 | digit[i] := -1 |
||
792 | END; |
||
793 | |||
794 | FOR i := ORD("0") TO ORD("9") DO |
||
795 | digit[i] := i - ORD("0") |
||
796 | END; |
||
797 | |||
798 | FOR i := ORD("A") TO ORD("F") DO |
||
799 | digit[i] := i - ORD("A") + 10 |
||
800 | END |
||
801 | END init; |
||
802 | |||
803 | |||
804 | BEGIN |
||
805 | init |
||
7983 | leency | 806 | END ARITH.>>>=>=>>>>>>>>>>>>=>=>=>=>=>=>=>=> |