Mercurial > ~dholland > hg > ag > index.cgi
annotate tests/agcl/ffcalc/ffcm-b.syn @ 9:60b08b68c750
Switch to static inline as an expedient build fix.
Should probably set this up with working C99 inline but for the moment
I don't have the energy.
author | David A. Holland |
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date | Mon, 30 May 2022 23:56:45 -0400 |
parents | 13d2b8934445 |
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rev | line source |
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1 {/* FOUR FUNCTION CALCULATOR: FFCALC.SYN */} |
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2 |
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3 // -- CONFIGURATION SECTION ---------------------------- |
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4 [ |
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5 default token type = double |
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6 disregard white space |
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7 distinguish lexemes |
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8 lexeme { real, name} |
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9 case sensitive = off |
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10 ] |
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11 |
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12 // -- FOUR FUNCTION CALCULATOR ------------------------- |
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13 (void) calculator $ |
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14 -> [calculation?, '\n']..., eof |
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15 |
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16 (void) calculation |
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17 -> expression:x =printf("%g\n",x); |
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18 -> name:n, '=', expression:x ={ |
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19 printf("%c = %g\n",n+'A',value[n]=x);} |
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20 -> "ADD", expression, "TO", name |
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21 |
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22 -> error |
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23 |
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24 expression |
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25 -> term |
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26 -> expression:x, '+', term:t = x+t; |
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27 -> expression:x, '-', term:t = x-t; |
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28 |
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29 term |
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30 -> factor |
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31 -> term:t, '*', factor:f = t*f; |
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32 -> term:t, '/', factor:f = t/f; |
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33 |
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34 factor |
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35 -> name:n = value[n]; |
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36 -> real |
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37 -> '(', expression:x, ')' = x; |
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38 -> '-', factor:f = -f; |
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39 |
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40 // -- LEXICAL UNITS ------------------------------------ |
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41 digit = '0-9' |
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42 eof = -1 |
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43 letter = 'a-z' |
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44 |
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45 (void) white space |
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46 -> ' ' + '\t' + '\r' + '\f' + '\v' |
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47 -> "/*", ~eof?..., "*/" |
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48 |
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49 real |
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50 -> integer part:i, '.', fraction part:f = i+f; |
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51 -> integer part, '.'? |
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52 -> '.', fraction part:f = f; |
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53 |
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54 integer part |
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55 -> digit:d = d-'0'; |
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56 -> integer part:x, digit:d = 10*x + d-'0'; |
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57 |
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58 fraction part |
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59 -> digit:d =(d-'0')/10.; |
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60 -> digit:d, fraction part:f =(d-'0' + f)/10.; |
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61 |
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62 name |
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63 -> letter: c =n_chars = 0, name[n_chars++]=c; |
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64 -> name, letter+digit: c =name[n_chars++]=c; |
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65 |
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66 { /* -- EMBEDDED C ---------------------------------- */ |
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67 double value[64]; /* registers */ |
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68 void main(void) { |
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69 ffcalc(); |
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70 } |
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71 } // -- END OF EMBEDDED C ------------------------------ |