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  1. <html><head><style>
    2. 

  2.   .str { color: #0d3; }
    3. 

  3.   .comm { color: #888; }
    4. 

  4.   .prep { color: #00f; }
    5. 

  5.   .ptr { color: #b80; }
    6. 

  6.   .dir { color: #08e; }
    7. 

  7.   .name { color: #da0; }
    8. 

  8.   .con { color: #f00; }
    9. 

  9. </style></head><body>
    10. 

  10. 

  11. <p>Example of syntax-highlighted comun program (highlighted with a comun program in example directory):</p>
    12. 

  12. 

  13. <pre>
    14. 

  14. <span class='comm'># small comun library of generally useful functions</span>
    15. 

  15. <span class='comm'># by drummyfish, released under CC0 1.0, public domain</span>
    16. 

  16. 

  17. <span class='comm'># TODO: exp? strfind</span>
    18. 

  18. 

  19. <span class='comm'># internal library pointers</span>
    20. 

  20. <span class='dir'>~_mLibPtrA:0</span>   <span class='comm'># tmp pointer</span>
    21. 

  21. <span class='dir'>~_mLibPtrB:0</span>   <span class='comm'># tmp pointer</span>
    22. 

  22. <span class='dir'>~_mLibTmpMem:3</span> <span class='comm'># tiny tmp memory</span>
    23. 

  23. <span class='dir'>~_mLibVarA:0</span>   <span class='comm'># tmp variable, 2nd cell of tmp memory</span>
    24. 

  24. <span class='dir'>~_mLibVarB:0</span>   <span class='comm'># tmp variable, 3rd cell of tmp memory</span>
    25. 

  25. 

  26. <span class='ptr'>$_mLibTmpMem&gt;_mLibVarA</span>
    27. 

  27. <span class='ptr'>$&gt;_mLibVarA</span>
    28. 

  28. <span class='ptr'>$_mLibVarA&gt;_mLibVarB</span>
    29. 

  29. <span class='ptr'>$&gt;_mLibVarB</span>
    30. 

  30. 

  31. <span class='comm'># ========== GENERAL ===========================================================</span>
    32. 

  32. 

  33. <span class='name'>abs:</span> <span class='ptr'>$0</span> -1</span> &lt;&lt;</span> <span class='con'>?</span> -1</span> *</span> <span class='con'>.</span> <span class='con'>.</span> <span class='comm'># Absolute value.</span>
    34. 

  34. <span class='name'>min:</span> &gt;'</span> <span class='con'>?</span> &gt;&lt;</span> <span class='con'>.</span> ^</span> <span class='con'>.</span>       <span class='comm'># Minimum of two values.</span>
    35. 

  35. <span class='name'>max:</span> &lt;'</span> <span class='con'>?</span> &gt;&lt;</span> <span class='con'>.</span> ^</span> <span class='con'>.</span>       <span class='comm'># Maximum of two vlaues.</span>
    36. 

  36. <span class='name'>minS:</span> &gt;&gt;'</span> <span class='con'>?</span> &gt;&lt;</span> <span class='con'>.</span> ^</span> <span class='con'>.</span>     <span class='comm'># Minimum of two signed values.</span>
    37. 

  37. <span class='name'>maxS:</span> &lt;&lt;'</span> <span class='con'>?</span> &gt;&lt;</span> <span class='con'>.</span> ^</span> <span class='con'>.</span>     <span class='comm'># Maximum of two signed values.</span>
    38. 

  38. <span class='name'>min3:</span> <span class='name'>min</span> <span class='name'>min</span> <span class='con'>.</span>          <span class='comm'># Minimum of three values.</span>
    39. 

  39. <span class='name'>max3:</span> <span class='name'>max</span> <span class='name'>max</span> <span class='con'>.</span>          <span class='comm'># Maximum of three values.</span>
    40. 

  40. 

  41. <span class='comm'># Interpolates from $3 to $2 by a factor of $1/$0.</span>
    42. 

  42. <span class='name'>lerp:</span>
    43. 

  43.   <span class='ptr'>$3</span> <span class='ptr'>$3</span> &gt;</span> <span class='con'>?</span> <span class='comm'># if going from higher to lower, swap</span>
    44. 

  44.     <span class='ptr'>$3</span> <span class='ptr'>$3</span> <span class='ptr'>$:5</span> <span class='ptr'>$:3</span>
    45. 

  45.     <span class='ptr'>$0</span> <span class='ptr'>$2</span> -</span> <span class='ptr'>$:2</span>
    46. 

  46.   <span class='con'>.</span>
    47. 

  47. 

  48.   &gt;&lt;</span> <span class='ptr'>$2</span> <span class='ptr'>$4</span> -</span> *</span> &gt;&lt;</span> /</span> &gt;&lt;</span> ^</span> +</span>
    49. 

  49. <span class='con'>.</span>
    50. 

  50. 

  51. <span class='comm'># Hashes input number to a 16 bit value, can also be used as a pseudorandom</span>
    52. 

  52. <span class='comm'># generator.</span>
    53. 

  53. <span class='name'>hash:</span>
    54. 

  54.   <span class='ptr'>$0</span> +b010000000</span> *</span> +</span>  +xffff</span> %</span>
    55. 

  55.   <span class='ptr'>$0</span> +b100000000</span> /</span> |!</span> +xffff</span> %</span>
    56. 

  56.   <span class='ptr'>$0</span> +b000001000</span> *</span> +</span>  +xffff</span> %</span>
    57. 

  57.   <span class='ptr'>$0</span> +b000000100</span> /</span> |!</span> +xffff</span> %</span>
    58. 

  58.   <span class='ptr'>$0</span> +b000010000</span> *</span> +</span>  +xffff</span> %</span>
    59. 

  59.   <span class='ptr'>$0</span> +b100000000</span> /</span> |!</span> +xffff</span> %</span>
    60. 

  60. <span class='con'>.</span>
    61. 

  61. 

  62. <span class='comm'># ========== STRINGS ===========================================================</span>
    63. 

  63. <span class='comm'># String is a sequence of ASCII character codes, considered starting stack top</span>
    64. 

  64. <span class='comm'># and continuing downwards, ending with value 0.</span>
    65. 

  65. 

  66. <span class='comm'># Reads newline-terminated string from input, pushes it as a zero terminated</span>
    67. 

  67. <span class='comm'># string in reversed order, without the newline.</span>
    68. 

  68. <span class='name'>strRead:</span>
    69. 

  69.   0</span>
    70. 

  70. 

  71.   <span class='con'>@@</span>
    72. 

  72.     &lt;-</span>
    73. 

  73. 

  74.     <span class='ptr'>$0</span> 10</span> =</span> <span class='con'>?</span>
    75. 

  75.       ^</span> !@</span>
    76. 

  76.     <span class='con'>.</span>
    77. 

  77.   <span class='con'>.</span>
    78. 

  78. 

  79.   <span class='name'>strReverse</span>
    80. 

  80. <span class='con'>.</span>
    81. 

  81. 

  82. <span class='comm'># Prints values from memory stack up to stack top.</span>
    83. 

  83. <span class='name'>stackPrint:</span>
    84. 

  84.   <span class='ptr'>$$</span> <span class='name'>arrayPrint</span>
    85. 

  85. <span class='con'>.</span>
    86. 

  86. 

  87. <span class='comm'># Computes string length.</span>
    88. 

  88. <span class='name'>strLen:</span>
    89. 

  89.   <span class='ptr'>$0&gt;_mLibPtrA</span>
    90. 

  90.   0</span>
    91. 

  91. 

  92.   <span class='con'>@@</span>
    93. 

  93.     <span class='ptr'>$_mLibPtrA</span> 0</span> =</span> <span class='con'>?</span>
    94. 

  94.       !@</span>
    95. 

  95.     <span class='con'>.</span>
    96. 

  96. 

  97.     ++</span>
    98. 

  98.     <span class='ptr'>$&lt;_mLibPtrA</span>
    99. 

  99.   <span class='con'>.</span>
    100. 

  100. <span class='con'>.</span>
    101. 

  101. 

  102. <span class='comm'># Expects two strings which won't be popped, pushes 1 if they're equal, else 0.</span>
    103. 

  103. <span class='name'>strEq:</span>
    104. 

  104.   <span class='ptr'>$0&gt;_mLibPtrA</span>
    105. 

  105.   <span class='ptr'>$0&gt;_mLibPtrB</span>
    106. 

  106. 

  107.   <span class='con'>@@</span>
    108. 

  108.     <span class='ptr'>$_mLibPtrB</span> 0</span> =</span> <span class='con'>?</span>
    109. 

  109.       !@</span>
    110. 

  110.     <span class='con'>.</span>
    111. 

  111. 

  112.     <span class='ptr'>$&lt;_mLibPtrB</span>
    113. 

  113.   <span class='con'>.</span>
    114. 

  114. 

  115.   <span class='ptr'>$&lt;_mLibPtrB</span>
    116. 

  116. 

  117.   <span class='con'>@@</span>
    118. 

  118.     <span class='ptr'>$_mLibPtrA</span> <span class='ptr'>$_mLibPtrB</span> !=</span> <span class='con'>?</span>
    119. 

  119.       0</span> !.</span>
    120. 

  120.     <span class='con'>.</span>
    121. 

  121. 

  122.     <span class='ptr'>$_mLibPtrA</span> 0</span> =</span> <span class='con'>?</span>
    123. 

  123.       1</span> !.</span>
    124. 

  124.     <span class='con'>.</span>
    125. 

  125. 

  126.     <span class='ptr'>$&lt;_mLibPtrA</span>
    127. 

  127.     <span class='ptr'>$&lt;_mLibPtrB</span>
    128. 

  128.   <span class='con'>.</span>
    129. 

  129. <span class='con'>.</span>
    130. 

  130. 

  131. <span class='comm'># Left-pads a string to length $1 with character $0.</span>
    132. 

  132. <span class='name'>strPad:</span>
    133. 

  133.   <span class='ptr'>$:_mLibVarA</span>
    134. 

  134.   <span class='ptr'>$:_mLibVarB</span>
    135. 

  135. 

  136.   <span class='name'>strLen</span> <span class='ptr'>$_mLibVarB</span> &gt;&lt;</span> -</span>
    137. 

  137. 

  138.   <span class='con'>@@</span>
    139. 

  139.     <span class='ptr'>$0</span> 0</span> &lt;&lt;=</span> <span class='con'>?</span>
    140. 

  140.       ^</span> !@</span>
    141. 

  141.     <span class='con'>.</span>
    142. 

  142. 

  143.     <span class='ptr'>$_mLibVarA</span> &gt;&lt;</span>
    144. 

  144.     --</span>
    145. 

  145.   <span class='con'>.</span>
    146. 

  146. <span class='con'>.</span>
    147. 

  147. 

  148. <span class='comm'># Reverses a zero-terminated string.</span>
    149. 

  149. <span class='name'>strReverse:</span>
    150. 

  150.   <span class='name'>strLen</span> <span class='name'>arrayReverse</span> ^</span>
    151. 

  151. <span class='con'>.</span>
    152. 

  152. 

  153. <span class='comm'># ========== MATH ==============================================================</span>
    154. 

  154. 

  155. <span class='comm'># Power: pops 2, pushes $1 raised to $0.</span>
    156. 

  156. <span class='name'>pow:</span>
    157. 

  157.   1</span> &gt;&lt;</span>
    158. 

  158. 

  159.   <span class='con'>@'</span>
    160. 

  160.     &gt;&lt;</span> <span class='ptr'>$2</span> *</span> &gt;&lt;</span>
    161. 

  161.     --</span>
    162. 

  162.   <span class='con'>.</span>
    163. 

  163.  
    164. 

  164.   ^</span> &gt;&lt;</span> ^</span> 
    165. 

  165. <span class='con'>.</span>
    166. 

  166. 

  167. <span class='comm'># Square roots a number using binary search.</span>
    168. 

  168. <span class='name'>sqrt:</span>
    169. 

  169.   0</span> <span class='ptr'>$1</span> 2</span> /</span>  <span class='comm'># stack: x lower upper</span>
    170. 

  170. 

  171.   <span class='con'>@@</span>
    172. 

  172.     <span class='ptr'>$0</span> <span class='ptr'>$2</span> -</span> 1</span> &lt;=</span> <span class='con'>?</span>
    173. 

  173.       !@</span>
    174. 

  174.     <span class='con'>.</span>
    175. 

  175. 

  176.     <span class='ptr'>$1</span> <span class='ptr'>$1</span> +</span> 2</span> /</span>
    177. 

  177.     <span class='ptr'>$0</span> <span class='ptr'>$0</span> *</span>    <span class='comm'># stack: x lower upper middle middle^2</span>
    178. 

  178. 

  179.     <span class='ptr'>$4</span> &gt;</span> <span class='con'>?</span>
    180. 

  180.       <span class='ptr'>$:1</span>
    181. 

  181.       <span class='con'>;</span>
    182. 

  182.       <span class='ptr'>$:2</span>
    183. 

  183.     <span class='con'>.</span>
    184. 

  184.   <span class='con'>.</span>
    185. 

  185. 

  186.   <span class='ptr'>$0</span> <span class='ptr'>$0</span> *</span> <span class='ptr'>$3</span> &lt;=</span> <span class='con'>?</span>  
    187. 

  187.     &gt;&lt;</span>
    188. 

  188.   <span class='con'>.</span>
    189. 

  189. 

  190.   ^</span> &gt;&lt;</span> ^</span>
    191. 

  191. <span class='con'>.</span>
    192. 

  192. 

  193. <span class='comm'># Computes integer logarithm of $0 with base $1.</span>
    194. 

  194. <span class='name'>log:</span>
    195. 

  195.   0</span> <span class='comm'># result</span>
    196. 

  196.   1</span> <span class='comm'># exponentiated value</span>
    197. 

  197.   1</span> <span class='comm'># previous exponentiated value</span>
    198. 

  198. 

  199.   <span class='con'>@@</span>
    200. 

  200.     <span class='ptr'>$1</span> <span class='ptr'>$4</span> =</span> <span class='con'>?</span> <span class='comm'># equality has to be checked, considering overflow may happen next</span>
    201. 

  201.       !@</span>
    202. 

  202.     <span class='con'>.</span>
    203. 

  203. 

  204.     <span class='ptr'>$2</span> ++</span> <span class='ptr'>$:3</span>    <span class='comm'># compute next power</span>
    205. 

  205.     <span class='ptr'>$1</span> <span class='ptr'>$5</span> *</span> <span class='ptr'>$:2</span>
    206. 

  206. 

  207.     <span class='ptr'>$1</span> <span class='ptr'>$4</span> &gt;</span> <span class='ptr'>$2</span> <span class='ptr'>$2</span> &lt;=</span> ||</span> <span class='con'>?</span> <span class='comm'># new power &gt; x or new &lt;= previous (overflow)?</span>
    208. 

  208.       <span class='ptr'>$2</span> --</span> <span class='ptr'>$:3</span>
    209. 

  209.       !@</span>      
    210. 

  210.     <span class='con'>.</span>
    211. 

  211. 

  212.     <span class='ptr'>$1</span> <span class='ptr'>$:1</span>       <span class='comm'># current -&gt; previous</span>
    213. 

  213.   <span class='con'>.</span>
    214. 

  214. 

  215.   ^</span> ^</span> &gt;&lt;</span> ^</span> &gt;&lt;</span> ^</span>
    216. 

  216. <span class='con'>.</span>
    217. 

  217. 

  218. <span class='comm'># Computes 8bit sine function approximation with quadratic curve, value 256 on</span>
    219. 

  219. <span class='comm'># input represents the whole period (2 * pi), output value is between 0 and 255.</span>
    220. 

  220. <span class='name'>sin8:</span>
    221. 

  221.   <span class='ptr'>$0</span> 256</span> %</span> 64</span> /</span> <span class='comm'># quadrant</span>
    222. 

  222.   &gt;&lt;</span> 64</span> %</span>
    223. 

  223. 

  224.   <span class='ptr'>$1</span> 2</span> %</span> 1</span> =</span> <span class='con'>?</span>
    225. 

  225.     63</span> &gt;&lt;</span> -</span>
    226. 

  226.   <span class='con'>.</span>
    227. 

  227. 

  228.   63</span> -</span> <span class='ptr'>$0</span> *</span> 32</span> /</span>
    229. 

  229. 

  230.   &gt;&lt;</span> 1</span> &lt;=</span> <span class='con'>?</span>
    231. 

  231.     255</span> &gt;&lt;</span> -</span>
    232. 

  232.   <span class='con'>.</span>
    233. 

  233. <span class='con'>.</span>
    234. 

  234. 

  235. <span class='comm'># Computes 8bit cosine function approximation.</span>
    236. 

  236. <span class='name'>cos8:</span>
    237. 

  237.   64</span> +</span> <span class='name'>sin8</span>
    238. 

  238. <span class='con'>.</span>
    239. 

  239. 

  240. <span class='comm'># Computes factorial recursively.</span>
    241. 

  241. <span class='name'>fact:</span>
    242. 

  242.   <span class='con'>?'</span>
    243. 

  243.     <span class='ptr'>$0</span> --</span> <span class='name'>fact</span> *</span>
    244. 

  244.   <span class='con'>;</span>
    245. 

  245.     ^</span> 1</span>
    246. 

  246.   <span class='con'>.</span>
    247. 

  247. <span class='con'>.</span>
    248. 

  248. 

  249. <span class='comm'># Checkes if number is a prime.</span>
    250. 

  250. <span class='name'>isPrime:</span>
    251. 

  251.   <span class='ptr'>$0</span> 1</span> &lt;=</span>
    252. 

  252.   <span class='con'>?</span>
    253. 

  253.     ^</span> 0</span> <span class='comm'># 0 and 1 are not primes</span>
    254. 

  254.   <span class='con'>;</span>
    255. 

  255.     <span class='ptr'>$0</span> 2</span> /</span>
    256. 

  256. 

  257.     <span class='con'>@@</span>
    258. 

  258.       <span class='ptr'>$0</span> 1</span> &lt;=</span>
    259. 

  259.       <span class='con'>?</span>
    260. 

  260.         ^</span> ^</span> 1</span> !.</span>
    261. 

  261.       <span class='con'>.</span>
    262. 

  262. 

  263.       <span class='ptr'>$1</span> <span class='ptr'>$1</span> %</span> 0</span> =</span>
    264. 

  264.       <span class='con'>?</span>
    265. 

  265.         ^</span> ^</span> 0</span> !.</span>
    266. 

  266.       <span class='con'>.</span>
    267. 

  267. 

  268.       --</span>
    269. 

  269.     <span class='con'>.</span>
    270. 

  270.   <span class='con'>.</span>
    271. 

  271. <span class='con'>.</span>
    272. 

  272. 

  273. <span class='comm'># ========== NUMBER PRINTING AND CONVERSION TO/FROM STRINGS ====================</span>
    274. 

  274. 

  275. <span class='comm'># Internal function, converts number to base passed in variable A.</span>
    276. 

  276. <span class='name'>_numToStrBase:</span>
    277. 

  277.   0</span> &gt;&lt;</span>
    278. 

  278.   <span class='con'>@@</span>
    279. 

  279.     <span class='ptr'>$0</span> <span class='ptr'>$_mLibVarA</span> %</span> 
    280. 

  280. 

  281.     <span class='ptr'>$0</span> 10</span> &lt;</span> <span class='con'>?</span> <span class='str'>"0"</span> <span class='con'>;</span> <span class='str'>"A"</span> 10</span> -</span> <span class='con'>.</span>
    282. 

  282.     +</span> &gt;&lt;</span>
    283. 

  283.     <span class='ptr'>$_mLibVarA</span> /</span>
    284. 

  284. 

  285.     <span class='ptr'>$0</span> 0</span> =</span> <span class='con'>?</span>
    286. 

  286.       !@</span>
    287. 

  287.     <span class='con'>.</span>
    288. 

  288.   <span class='con'>.</span>
    289. 

  289.   ^</span>
    290. 

  290. <span class='con'>.</span>
    291. 

  291. 

  292. <span class='name'>numToStrBin:</span> 2</span> <span class='ptr'>$:_mLibVarA</span> <span class='name'>_numToStrBase</span> <span class='con'>.</span>
    293. 

  293. <span class='name'>numToStrHex:</span> 16</span> <span class='ptr'>$:_mLibVarA</span> <span class='name'>_numToStrBase</span> <span class='con'>.</span>
    294. 

  294. <span class='name'>numToStr:</span> 10</span> <span class='ptr'>$:_mLibVarA</span> <span class='name'>_numToStrBase</span> <span class='con'>.</span>
    295. 

  295. 

  296. <span class='comm'># Converts a signed number to zero-terminated string.</span>
    297. 

  297. <span class='name'>numToStrS:</span>
    298. 

  298.   <span class='ptr'>$0</span> 0</span> &lt;&lt;</span>
    299. 

  299.   <span class='con'>?</span>
    300. 

  300.     -1</span> &gt;&lt;</span> -</span> 1</span> +</span>
    301. 

  301.     <span class='name'>numToStr</span>
    302. 

  302.     <span class='str'>"-"</span>
    303. 

  303.   <span class='con'>;</span>
    304. 

  304.     <span class='name'>numToStr</span>
    305. 

  305.   <span class='con'>.</span>
    306. 

  306. <span class='con'>.</span>
    307. 

  307. 

  308. <span class='name'>numPrint:</span> <span class='name'>numToStr</span> --&gt;</span> <span class='con'>.</span>
    309. 

  309. <span class='name'>numPrintS:</span> <span class='name'>numToStrS</span> --&gt;</span> <span class='con'>.</span>
    310. 

  310. <span class='name'>numPrintHex:</span> <span class='name'>numToStrHex</span> --&gt;</span> <span class='con'>.</span>
    311. 

  311. <span class='name'>numPrintBin:</span> <span class='name'>numToStrBin</span> --&gt;</span> <span class='con'>.</span>
    312. 

  312. 

  313. <span class='comm'># Converts number from decadic string (zero terminated reverse pushed on stack),</span>
    314. 

  314. <span class='comm'># negative numbers are also supported, validity is not checked.</span>
    315. 

  315. <span class='name'>numFromStr:</span>
    316. 

  316.   <span class='ptr'>$0</span> <span class='str'>"-"</span> =</span> <span class='con'>?</span>
    317. 

  317.     ^</span> <span class='name'>numFromStr</span> -1</span> *</span>
    318. 

  318.   <span class='con'>;</span>
    319. 

  319.     0</span>
    320. 

  320. 

  321.     <span class='con'>@@</span>
    322. 

  322.       <span class='ptr'>$1</span> 0</span> =</span> <span class='con'>?</span>
    323. 

  323.         !@</span>
    324. 

  324.       <span class='con'>.</span>
    325. 

  325. 

  326.       10</span> *</span>
    327. 

  327. 

  328.       <span class='str'>"0"</span> -</span> +</span>
    329. 

  329.     <span class='con'>.</span>
    330. 

  330. 

  331.     &gt;&lt;</span> ^</span>
    332. 

  332.   <span class='con'>.</span>
    333. 

  333. <span class='con'>.</span>
    334. 

  334. 

  335. <span class='comm'># ========== ARRAYS ============================================================</span>
    336. 

  336. <span class='comm'># Array here means N valus on the stack and the value N pushed afterwards.</span>
    337. 

  337. <span class='comm'># Functions working with arrays normally leave this unchanged without popping,</span>
    338. 

  338. <span class='comm'># e.g. sorting an array will just change orders of the items in the array.</span>
    339. 

  339. 

  340. <span class='comm'># Prints out given array (from lowest memory address towards stack top).</span>
    341. 

  341. <span class='name'>arrayPrint:</span>
    342. 

  342.   <span class='ptr'>$0&gt;_mLibPtrA</span>
    343. 

  343.   <span class='ptr'>$:_mLibVarA'</span>
    344. 

  344. 

  345.   <span class='con'>@@</span> <span class='comm'># move pointer A to bottom of array</span>
    346. 

  346.     <span class='ptr'>$_mLibVarA</span>
    347. 

  347. 

  348.     <span class='con'>?'</span>
    349. 

  349.       --</span> <span class='ptr'>$:_mLibVarA</span>
    350. 

  350.       <span class='ptr'>$&lt;_mLibPtrA</span>
    351. 

  351.     <span class='con'>;</span>
    352. 

  352.       ^</span> !@</span>
    353. 

  353.     <span class='con'>.</span>
    354. 

  354.   <span class='con'>.</span>
    355. 

  355. 

  356.   <span class='con'>@@</span> <span class='comm'># now go up and print</span>
    357. 

  357.     <span class='ptr'>$_mLibPtrA=0</span> 0</span> =</span> <span class='con'>?</span>
    358. 

  358.       !@</span>
    359. 

  359.     <span class='con'>.</span>
    360. 

  360. 

  361.     <span class='ptr'>$_mLibPtrA</span> <span class='name'>printNum</span> <span class='str'>" "</span> -&gt;</span>
    362. 

  362.     <span class='ptr'>$&gt;_mLibPtrA</span>
    363. 

  363.   <span class='con'>.</span>
    364. 

  364. <span class='con'>.</span>
    365. 

  365. 

  366. <span class='comm'># Reverses items in given array.</span>
    367. 

  367. <span class='name'>arrayReverse:</span>
    368. 

  368.   <span class='ptr'>$0&gt;_mLibPtrA</span>
    369. 

  369.   <span class='ptr'>$:_mLibVarA'</span>
    370. 

  370. 

  371.   <span class='con'>@@</span>
    372. 

  372.     <span class='ptr'>$_mLibVarA</span>
    373. 

  373. 

  374.     <span class='con'>?'</span>
    375. 

  375.       --</span> <span class='ptr'>$:_mLibVarA</span>
    376. 

  376.       <span class='ptr'>$&lt;_mLibPtrA</span>
    377. 

  377.     <span class='con'>;</span>
    378. 

  378.       ^</span> !@</span>
    379. 

  379.     <span class='con'>.</span>
    380. 

  380.   <span class='con'>.</span>
    381. 

  381. 

  382.   <span class='ptr'>$0&gt;_mLibPtrB</span>
    383. 

  383.   <span class='ptr'>$&lt;_mLibPtrB</span>
    384. 

  384. 

  385.   <span class='con'>@@</span>
    386. 

  386.     <span class='ptr'>$_mLibPtrA=_mLibPtrB</span> 2</span> !=</span> <span class='con'>?</span>
    387. 

  387.       !.</span>
    388. 

  388.     <span class='con'>.</span>
    389. 

  389. 

  390.     <span class='ptr'>$_mLibPtrA</span> <span class='ptr'>$_mLibPtrB</span>
    391. 

  391.     <span class='ptr'>$:_mLibPtrA</span> <span class='ptr'>$:_mLibPtrB</span>
    392. 

  392. 

  393.     <span class='ptr'>$&gt;_mLibPtrA</span>
    394. 

  394.     <span class='ptr'>$&lt;_mLibPtrB</span>
    395. 

  395.   <span class='con'>.</span>
    396. 

  396. <span class='con'>.</span>
    397. 

  397. 

  398. <span class='comm'># Sorts an array in ascending order (towards stack top) with bubble sort.</span>
    399. 

  399. <span class='name'>arraySort:</span>
    400. 

  400.   <span class='ptr'>$0</span> --</span>
    401. 

  401. 

  402.   <span class='con'>@'</span>
    403. 

  403.     <span class='ptr'>$0&gt;_mLibPtrA</span>
    404. 

  404.     <span class='ptr'>$&lt;_mLibPtrA</span>
    405. 

  405.     <span class='ptr'>$&lt;_mLibPtrA</span>
    406. 

  406. 

  407.     <span class='ptr'>$0</span>
    408. 

  408.     <span class='con'>@'</span>
    409. 

  409.       <span class='ptr'>$_mLibPtrA</span> <span class='ptr'>$&lt;_mLibPtrA</span> <span class='ptr'>$_mLibPtrA</span>
    410. 

  410. 

  411.       &lt;'</span> <span class='con'>?</span>
    412. 

  412.         &gt;&lt;</span>
    413. 

  413.         <span class='ptr'>$:_mLibPtrA</span> <span class='ptr'>$&gt;_mLibPtrA</span> <span class='ptr'>$:_mLibPtrA</span> <span class='ptr'>$&lt;_mLibPtrA</span>
    414. 

  414.       <span class='con'>;</span>
    415. 

  415.         ^</span> ^</span>
    416. 

  416.       <span class='con'>.</span>
    417. 

  417. 

  418.       --</span>
    419. 

  419.     <span class='con'>.</span>
    420. 

  420. 

  421.     ^</span>
    422. 

  422.     --</span>
    423. 

  423.   <span class='con'>.</span>
    424. 

  424.   ^</span>
    425. 

  425. <span class='con'>.</span>
    426. 

  426. 

  427. <span class='comm'># Sorts an array in descending order.</span>
    428. 

  428. <span class='name'>arraySortDesc:</span>
    429. 

  429.   <span class='name'>arraySort</span> <span class='name'>arrayReverse</span>
    430. 

  430. <span class='con'>.</span>
    431. 

  431. 

  432. </pre></body></html>
    433. 

  433.