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Rev | Author | Line No. | Line |
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7983 | leency | 1 | (* |
7597 | akron1 | 2 | BSD 2-Clause License |
3 | |||
9893 | akron1 | 4 | Copyright (c) 2018-2022, 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; |
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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; |
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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; |
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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 |
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188 | v.typ := tWCHAR; |
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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; |
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195 | IF ~check(v) THEN |
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196 | error := 2 |
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197 | END |
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198 | END |
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199 | END |
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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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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 | minus := FALSE; |
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228 | n := 0; |
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229 | |||
9893 | akron1 | 230 | exp10 := 0.0; |
231 | WHILE (error = 0) & (STRINGS.digit(s[i]) OR (s[i] = ".")) DO |
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232 | IF s[i] = "." THEN |
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233 | exp10 := 1.0; |
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7597 | akron1 | 234 | INC(i) |
235 | ELSE |
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9893 | akron1 | 236 | IF opFloat2(value, 10.0, "*") & opFloat2(value, FLT(digit[ORD(s[i])]), "+") & opFloat2(exp10, 10.0, "*") THEN |
237 | INC(i) |
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238 | ELSE |
||
239 | error := 4 |
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240 | END |
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7597 | akron1 | 241 | END |
242 | END; |
||
243 | |||
9893 | akron1 | 244 | IF ~opFloat2(value, exp10, "/") THEN |
8859 | leency | 245 | error := 4 |
246 | END; |
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247 | |||
248 | IF (s[i] = "E") OR (s[i] = "e") THEN |
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7597 | akron1 | 249 | INC(i) |
250 | END; |
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251 | |||
252 | IF (s[i] = "-") OR (s[i] = "+") THEN |
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253 | minus := s[i] = "-"; |
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254 | INC(i) |
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255 | END; |
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256 | |||
257 | WHILE (error = 0) & STRINGS.digit(s[i]) DO |
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258 | d := digit[ORD(s[i])]; |
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259 | IF n <= (UTILS.maxint - d) DIV 10 THEN |
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260 | n := n * 10 + d; |
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261 | INC(i) |
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262 | ELSE |
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263 | error := 5 |
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264 | END |
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265 | END; |
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266 | |||
267 | exp10 := 1.0; |
||
268 | WHILE (error = 0) & (n > 0) DO |
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269 | IF opFloat2(exp10, 10.0, "*") THEN |
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270 | DEC(n) |
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271 | ELSE |
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272 | error := 4 |
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273 | END |
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274 | END; |
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275 | |||
276 | IF error = 0 THEN |
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277 | IF minus THEN |
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278 | IF ~opFloat2(value, exp10, "/") THEN |
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279 | error := 4 |
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280 | END |
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281 | ELSE |
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282 | IF ~opFloat2(value, exp10, "*") THEN |
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283 | error := 4 |
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284 | END |
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285 | END |
||
286 | END; |
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287 | |||
288 | IF error = 0 THEN |
||
289 | v.float := value; |
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290 | v.typ := tREAL; |
||
291 | IF ~check(v) THEN |
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292 | error := 4 |
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293 | END |
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294 | END |
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295 | |||
296 | END fconv; |
||
297 | |||
298 | |||
299 | PROCEDURE setChar* (VAR v: VALUE; ord: INTEGER); |
||
300 | BEGIN |
||
301 | v.typ := tCHAR; |
||
302 | v.int := ord |
||
303 | END setChar; |
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304 | |||
305 | |||
306 | PROCEDURE setWChar* (VAR v: VALUE; ord: INTEGER); |
||
307 | BEGIN |
||
308 | v.typ := tWCHAR; |
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309 | v.int := ord |
||
310 | END setWChar; |
||
311 | |||
312 | |||
313 | PROCEDURE addInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
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314 | VAR |
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315 | error: BOOLEAN; |
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316 | |||
317 | BEGIN |
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318 | IF (a > 0) & (b > 0) THEN |
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319 | error := a > UTILS.maxint - b |
||
320 | ELSIF (a < 0) & (b < 0) THEN |
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321 | error := a < UTILS.minint - b |
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322 | ELSE |
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323 | error := FALSE |
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324 | END; |
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325 | |||
326 | IF ~error THEN |
||
327 | a := a + b |
||
328 | ELSE |
||
329 | a := 0 |
||
330 | END |
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331 | |||
332 | RETURN ~error |
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333 | END addInt; |
||
334 | |||
335 | |||
336 | PROCEDURE subInt (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
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337 | VAR |
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338 | error: BOOLEAN; |
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339 | |||
340 | BEGIN |
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341 | IF (a > 0) & (b < 0) THEN |
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342 | error := a > UTILS.maxint + b |
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343 | ELSIF (a < 0) & (b > 0) THEN |
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344 | error := a < UTILS.minint + b |
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345 | ELSIF (a = 0) & (b < 0) THEN |
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346 | error := b = UTILS.minint |
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347 | ELSE |
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348 | error := FALSE |
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349 | END; |
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350 | |||
351 | IF ~error THEN |
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352 | a := a - b |
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353 | ELSE |
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354 | a := 0 |
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355 | END |
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356 | |||
357 | RETURN ~error |
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358 | END subInt; |
||
359 | |||
360 | |||
361 | PROCEDURE lg2 (x: INTEGER): INTEGER; |
||
362 | VAR |
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363 | n: INTEGER; |
||
364 | |||
365 | BEGIN |
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366 | ASSERT(x > 0); |
||
367 | |||
7983 | leency | 368 | n := UTILS.Log2(x); |
369 | IF n = -1 THEN |
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7597 | akron1 | 370 | n := 255 |
371 | END |
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372 | |||
373 | RETURN n |
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374 | END lg2; |
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375 | |||
376 | |||
377 | PROCEDURE mulInt* (VAR a: INTEGER; b: INTEGER): BOOLEAN; |
||
378 | VAR |
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379 | error: BOOLEAN; |
||
380 | min, max: INTEGER; |
||
381 | |||
382 | BEGIN |
||
383 | min := UTILS.minint; |
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384 | max := UTILS.maxint; |
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385 | |||
386 | IF ((a > 1) & (b > 1)) OR ((a < 0) & (b < 0)) THEN |
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387 | error := (a = min) OR (b = min) OR (ABS(a) > max DIV ABS(b)) |
||
388 | |||
389 | ELSIF ((a > 1) & (b < 0)) OR ((a < 0) & (b > 1)) THEN |
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390 | error := (a = min) OR (b = min); |
||
391 | IF ~error THEN |
||
392 | IF lg2(ABS(a)) + lg2(ABS(b)) >= UTILS.bit_depth THEN |
||
393 | error := ABS(a) > max DIV ABS(b) |
||
394 | END |
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395 | END |
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396 | |||
397 | ELSE |
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398 | error := FALSE |
||
399 | END; |
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400 | |||
401 | IF ~error THEN |
||
402 | a := a * b |
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403 | ELSE |
||
404 | a := 0 |
||
405 | END |
||
406 | |||
407 | RETURN ~error |
||
408 | END mulInt; |
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409 | |||
410 | |||
411 | PROCEDURE _ASR (x, n: INTEGER): INTEGER; |
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7693 | akron1 | 412 | RETURN ASR(UTILS.Long(x), n) |
7597 | akron1 | 413 | END _ASR; |
414 | |||
415 | |||
416 | PROCEDURE _LSR (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 417 | RETURN UTILS.Long(LSR(UTILS.Short(x), n)) |
7597 | akron1 | 418 | END _LSR; |
419 | |||
420 | |||
421 | PROCEDURE _LSL (x, n: INTEGER): INTEGER; |
||
7693 | akron1 | 422 | RETURN UTILS.Long(LSL(x, n)) |
7597 | akron1 | 423 | END _LSL; |
424 | |||
425 | |||
426 | PROCEDURE _ROR1_32 (x: INTEGER): INTEGER; |
||
427 | BEGIN |
||
7693 | akron1 | 428 | x := UTILS.Short(x); |
7597 | akron1 | 429 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 31))) |
7693 | akron1 | 430 | RETURN UTILS.Long(x) |
7597 | akron1 | 431 | END _ROR1_32; |
432 | |||
433 | |||
7693 | akron1 | 434 | PROCEDURE _ROR1_16 (x: INTEGER): INTEGER; |
435 | BEGIN |
||
436 | x := x MOD 65536; |
||
437 | x := ORD(BITS(LSR(x, 1)) + BITS(LSL(x, 15))) |
||
438 | RETURN UTILS.Long(x) |
||
439 | END _ROR1_16; |
||
440 | |||
441 | |||
7597 | akron1 | 442 | PROCEDURE _ROR (x, n: INTEGER): INTEGER; |
443 | BEGIN |
||
7693 | akron1 | 444 | |
445 | CASE UTILS.bit_diff OF |
||
446 | |0: x := ROR(x, n) |
||
447 | |16, 48: |
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448 | n := n MOD 16; |
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449 | WHILE n > 0 DO |
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450 | x := _ROR1_16(x); |
||
451 | DEC(n) |
||
452 | END |
||
453 | |32: |
||
7597 | akron1 | 454 | n := n MOD 32; |
455 | WHILE n > 0 DO |
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456 | x := _ROR1_32(x); |
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457 | DEC(n) |
||
458 | END |
||
459 | END |
||
460 | |||
461 | RETURN x |
||
462 | END _ROR; |
||
463 | |||
464 | |||
465 | PROCEDURE opInt* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
466 | VAR |
||
467 | success: BOOLEAN; |
||
468 | |||
469 | BEGIN |
||
470 | success := TRUE; |
||
471 | |||
472 | CASE op OF |
||
473 | |"+": success := addInt(a.int, b.int) |
||
474 | |"-": success := subInt(a.int, b.int) |
||
475 | |"*": success := mulInt(a.int, b.int) |
||
476 | |"/": success := FALSE |
||
7983 | leency | 477 | |"D": a.int := a.int DIV b.int |
7597 | akron1 | 478 | |"M": a.int := a.int MOD b.int |
479 | |"L": a.int := _LSL(a.int, b.int) |
||
480 | |"A": a.int := _ASR(a.int, b.int) |
||
481 | |"O": a.int := _ROR(a.int, b.int) |
||
482 | |"R": a.int := _LSR(a.int, b.int) |
||
483 | |"m": a.int := MIN(a.int, b.int) |
||
484 | |"x": a.int := MAX(a.int, b.int) |
||
485 | END; |
||
486 | a.typ := tINTEGER |
||
487 | |||
488 | RETURN success & check(a) |
||
489 | END opInt; |
||
490 | |||
491 | |||
492 | PROCEDURE charToStr* (c: VALUE; VAR s: ARRAY OF CHAR); |
||
493 | BEGIN |
||
494 | s[0] := CHR(c.int); |
||
495 | s[1] := 0X |
||
496 | END charToStr; |
||
497 | |||
498 | |||
499 | PROCEDURE opSet* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
500 | BEGIN |
||
501 | CASE op OF |
||
502 | |"+": a.set := a.set + b.set |
||
503 | |"-": a.set := a.set - b.set |
||
504 | |"*": a.set := a.set * b.set |
||
505 | |"/": a.set := a.set / b.set |
||
506 | END; |
||
507 | a.typ := tSET |
||
508 | END opSet; |
||
509 | |||
510 | |||
511 | PROCEDURE opFloat* (VAR a: VALUE; b: VALUE; op: CHAR): BOOLEAN; |
||
512 | BEGIN |
||
513 | a.typ := tREAL |
||
514 | RETURN opFloat2(a.float, b.float, op) & check(a) |
||
515 | END opFloat; |
||
516 | |||
517 | |||
518 | PROCEDURE ord* (VAR v: VALUE); |
||
519 | BEGIN |
||
520 | CASE v.typ OF |
||
521 | |tCHAR, tWCHAR: |
||
522 | |tBOOLEAN: v.int := ORD(v.bool) |
||
7693 | akron1 | 523 | |tSET: v.int := UTILS.Long(ORD(v.set)) |
7597 | akron1 | 524 | END; |
525 | v.typ := tINTEGER |
||
526 | END ord; |
||
527 | |||
528 | |||
529 | PROCEDURE odd* (VAR v: VALUE); |
||
530 | BEGIN |
||
531 | v.typ := tBOOLEAN; |
||
532 | v.bool := ODD(v.int) |
||
533 | END odd; |
||
534 | |||
535 | |||
536 | PROCEDURE bits* (VAR v: VALUE); |
||
537 | BEGIN |
||
538 | v.typ := tSET; |
||
539 | v.set := BITS(v.int) |
||
540 | END bits; |
||
541 | |||
542 | |||
543 | PROCEDURE abs* (VAR v: VALUE): BOOLEAN; |
||
544 | VAR |
||
545 | res: BOOLEAN; |
||
546 | |||
547 | BEGIN |
||
7693 | akron1 | 548 | res := FALSE; |
7597 | akron1 | 549 | |
550 | CASE v.typ OF |
||
551 | |tREAL: |
||
552 | v.float := ABS(v.float); |
||
553 | res := TRUE |
||
554 | |tINTEGER: |
||
555 | IF v.int # UTILS.minint THEN |
||
556 | v.int := ABS(v.int); |
||
557 | res := TRUE |
||
558 | END |
||
7693 | akron1 | 559 | END |
560 | |||
7597 | akron1 | 561 | RETURN res |
562 | END abs; |
||
563 | |||
564 | |||
565 | PROCEDURE floor* (VAR v: VALUE): BOOLEAN; |
||
566 | VAR |
||
567 | res: BOOLEAN; |
||
568 | |||
569 | BEGIN |
||
570 | v.typ := tINTEGER; |
||
571 | res := (FLT(UTILS.minint) <= v.float) & (v.float <= FLT(UTILS.maxint)); |
||
572 | IF res THEN |
||
573 | v.int := FLOOR(v.float) |
||
574 | END |
||
575 | |||
576 | RETURN res |
||
577 | END floor; |
||
578 | |||
579 | |||
580 | PROCEDURE flt* (VAR v: VALUE); |
||
581 | BEGIN |
||
582 | v.typ := tREAL; |
||
583 | v.float := FLT(v.int) |
||
584 | END flt; |
||
585 | |||
586 | |||
587 | PROCEDURE neg* (VAR v: VALUE): BOOLEAN; |
||
588 | VAR |
||
589 | z: VALUE; |
||
590 | res: BOOLEAN; |
||
591 | |||
592 | BEGIN |
||
593 | res := TRUE; |
||
594 | |||
595 | z.typ := tINTEGER; |
||
596 | z.int := 0; |
||
597 | |||
598 | CASE v.typ OF |
||
599 | |tREAL: v.float := -v.float |
||
600 | |tSET: v.set := -v.set |
||
601 | |tINTEGER: res := opInt(z, v, "-"); v := z |
||
602 | |tBOOLEAN: v.bool := ~v.bool |
||
603 | END |
||
604 | |||
605 | RETURN res |
||
606 | END neg; |
||
607 | |||
608 | |||
609 | PROCEDURE setbool* (VAR v: VALUE; b: BOOLEAN); |
||
610 | BEGIN |
||
611 | v.bool := b; |
||
612 | v.typ := tBOOLEAN |
||
613 | END setbool; |
||
614 | |||
615 | |||
616 | PROCEDURE opBoolean* (VAR a: VALUE; b: VALUE; op: CHAR); |
||
617 | BEGIN |
||
618 | CASE op OF |
||
619 | |"&": a.bool := a.bool & b.bool |
||
620 | |"|": a.bool := a.bool OR b.bool |
||
621 | END; |
||
622 | a.typ := tBOOLEAN |
||
623 | END opBoolean; |
||
624 | |||
625 | |||
626 | PROCEDURE less (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
627 | VAR |
||
628 | res: BOOLEAN; |
||
629 | |||
630 | BEGIN |
||
631 | res := FALSE; |
||
632 | |||
633 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
634 | CASE v.typ OF |
||
635 | |tINTEGER, |
||
636 | tWCHAR, |
||
637 | tCHAR: res := v.int < v2.int |
||
638 | |tREAL: res := v.float < v2.float |
||
639 | |tBOOLEAN, |
||
640 | tSET: error := 1 |
||
641 | END |
||
642 | ELSE |
||
643 | error := 1 |
||
644 | END |
||
645 | |||
646 | RETURN res |
||
647 | END less; |
||
648 | |||
649 | |||
650 | PROCEDURE equal (v, v2: VALUE; VAR error: INTEGER): BOOLEAN; |
||
651 | VAR |
||
652 | res: BOOLEAN; |
||
653 | |||
654 | BEGIN |
||
655 | res := FALSE; |
||
656 | |||
657 | IF (v.typ = v2.typ) OR (v.typ IN {tCHAR, tWCHAR}) & (v2.typ IN {tCHAR, tWCHAR}) THEN |
||
658 | CASE v.typ OF |
||
659 | |tINTEGER, |
||
660 | tWCHAR, |
||
661 | tCHAR: res := v.int = v2.int |
||
662 | |tREAL: res := v.float = v2.float |
||
663 | |tBOOLEAN: res := v.bool = v2.bool |
||
664 | |tSET: res := v.set = v2.set |
||
665 | END |
||
666 | ELSE |
||
667 | error := 1 |
||
668 | END |
||
669 | |||
670 | RETURN res |
||
671 | END equal; |
||
672 | |||
673 | |||
8097 | maxcodehac | 674 | PROCEDURE relation* (VAR v: VALUE; v2: VALUE; op: INTEGER; VAR error: INTEGER); |
7597 | akron1 | 675 | VAR |
676 | res: BOOLEAN; |
||
677 | |||
678 | BEGIN |
||
679 | error := 0; |
||
680 | |||
681 | res := FALSE; |
||
682 | |||
8097 | maxcodehac | 683 | CASE op OF |
7597 | akron1 | 684 | |
8097 | maxcodehac | 685 | |opEQ: |
7597 | akron1 | 686 | res := equal(v, v2, error) |
687 | |||
8097 | maxcodehac | 688 | |opNE: |
7597 | akron1 | 689 | res := ~equal(v, v2, error) |
690 | |||
8097 | maxcodehac | 691 | |opLT: |
692 | res := less(v, v2, error) |
||
7597 | akron1 | 693 | |
8097 | maxcodehac | 694 | |opLE: |
695 | res := less(v, v2, error); |
||
696 | IF error = 0 THEN |
||
697 | res := equal(v, v2, error) OR res |
||
7597 | akron1 | 698 | END |
699 | |||
8097 | maxcodehac | 700 | |opGE: |
701 | res := ~less(v, v2, error) |
||
702 | |||
703 | |opGT: |
||
704 | res := less(v, v2, error); |
||
705 | IF error = 0 THEN |
||
706 | res := equal(v, v2, error) OR res |
||
707 | END; |
||
708 | res := ~res |
||
709 | |||
710 | |opIN: |
||
7597 | akron1 | 711 | IF (v.typ = tINTEGER) & (v2.typ = tSET) THEN |
7693 | akron1 | 712 | IF range(v, 0, UTILS.target.maxSet) THEN |
7597 | akron1 | 713 | res := v.int IN v2.set |
714 | ELSE |
||
715 | error := 2 |
||
716 | END |
||
717 | ELSE |
||
718 | error := 1 |
||
719 | END |
||
720 | |||
721 | END; |
||
722 | |||
723 | IF error = 0 THEN |
||
724 | v.bool := res; |
||
725 | v.typ := tBOOLEAN |
||
726 | END |
||
727 | |||
728 | END relation; |
||
729 | |||
730 | |||
731 | PROCEDURE emptySet* (VAR v: VALUE); |
||
732 | BEGIN |
||
733 | v.typ := tSET; |
||
734 | v.set := {} |
||
735 | END emptySet; |
||
736 | |||
737 | |||
738 | PROCEDURE constrSet* (VAR v: VALUE; a, b: VALUE); |
||
739 | BEGIN |
||
740 | v.typ := tSET; |
||
741 | v.set := {a.int .. b.int} |
||
742 | END constrSet; |
||
743 | |||
744 | |||
745 | PROCEDURE getInt* (v: VALUE): INTEGER; |
||
746 | BEGIN |
||
747 | ASSERT(check(v)) |
||
748 | |||
749 | RETURN v.int |
||
750 | END getInt; |
||
751 | |||
752 | |||
753 | PROCEDURE setInt* (VAR v: VALUE; i: INTEGER): BOOLEAN; |
||
754 | BEGIN |
||
755 | v.int := i; |
||
756 | v.typ := tINTEGER |
||
757 | |||
758 | RETURN check(v) |
||
759 | END setInt; |
||
760 | |||
761 | |||
8097 | maxcodehac | 762 | PROCEDURE concat* (VAR s: ARRAY OF CHAR; s1: ARRAY OF CHAR): BOOLEAN; |
763 | VAR |
||
764 | res: BOOLEAN; |
||
765 | |||
766 | BEGIN |
||
767 | res := LENGTH(s) + LENGTH(s1) < LEN(s); |
||
768 | IF res THEN |
||
769 | STRINGS.append(s, s1) |
||
770 | END |
||
771 | |||
772 | RETURN res |
||
773 | END concat; |
||
774 | |||
775 | |||
7597 | akron1 | 776 | PROCEDURE init; |
777 | VAR |
||
778 | i: INTEGER; |
||
779 | |||
780 | BEGIN |
||
781 | FOR i := 0 TO LEN(digit) - 1 DO |
||
782 | digit[i] := -1 |
||
783 | END; |
||
784 | |||
785 | FOR i := ORD("0") TO ORD("9") DO |
||
786 | digit[i] := i - ORD("0") |
||
787 | END; |
||
788 | |||
789 | FOR i := ORD("A") TO ORD("F") DO |
||
790 | digit[i] := i - ORD("A") + 10 |
||
791 | END |
||
792 | END init; |
||
793 | |||
794 | |||
795 | BEGIN |
||
796 | init |
||
7983 | leency | 797 | END ARITH.>>>=>=>>>>>>>>>>>>=>=>=>=>=>=>=>=> |