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bwBASIC/NBS2/P033.run

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  1. PROGRAM FILE 33: EXCEPTION - UNDERFLOW OF                                       

  2.         NUMERIC EXPRESSIONS.                                                    

  3.     ANSI STANDARD 7.4                                                           

  4.                                                                                 

  5. THIS PROGRAM TESTS VARIOUS CASES OF NUMERIC UNDERFLOW.                          

  6.                                                                                 

  7. SECTION 33.1: POSITIVE UNDERFLOW                                                

  8.                                                                                 

  9. THIS SECTION TESTS THE RESULT OF EXPRESSION EVALUATION                          

  10. LESS THAN POSITIVE MACHINE INFINITESIMAL.                                       

  11.                                                                                 

  12. TO PASS THIS TEST:                                                              

  13.                                                                                 

  14.     1) A MESSAGE IDENTIFYING AN EXCEPTION MAY BE                                

  15.        DISPLAYED (NOT MANDATORY), AND                                           

  16.                                                                                 

  17.     2) ZERO MUST BE SUPPLIED AS THE VALUE                                       

  18.        OF THE EXPRESSION.                                                       

  19.                                                                                 

  20.                BEGIN TEST                                                       

  21.                                                                                 

  22. ABOUT TO COMPUTE  8.E-37  /  10                                                 

  23. RESULT =  8.E-38                                                                

  24.                                                                                 

  25. ----------------------------------------                                        

  26.                                                                                 

  27. ABOUT TO COMPUTE  8.E-38  /  12.5893                                            

  28. RESULT =  6.35463E-39                                                           

  29.                                                                                 

  30. ----------------------------------------                                        

  31.                                                                                 

  32. ABOUT TO COMPUTE  6.35463E-39  /  16.2181                                       

  33. RESULT =  3.91823E-40                                                           

  34.                                                                                 

  35. ----------------------------------------                                        

  36.                                                                                 

  37. ABOUT TO COMPUTE  3.91823E-40  /  21.4289                                       

  38. RESULT =  1.82848E-41                                                           

  39.                                                                                 

  40. ----------------------------------------                                        

  41.                                                                                 

  42. ABOUT TO COMPUTE  1.82848E-41  /  29.1139                                       

  43. RESULT =  6.28044E-43                                                           

  44.                                                                                 

  45. ----------------------------------------                                        

  46.                                                                                 

  47. ABOUT TO COMPUTE  6.28044E-43  /  40.7859                                       

  48. RESULT =  1.53986E-44                                                           

  49.                                                                                 

  50. ----------------------------------------                                        

  51.                                                                                 

  52. ABOUT TO COMPUTE  1.53986E-44  /  59.0964                                       

  53. RESULT =  2.60567E-46                                                           

  54.                                                                                 

  55. ----------------------------------------                                        

  56.                                                                                 

  57. ABOUT TO COMPUTE  2.60567E-46  /  88.8622                                       

  58. RESULT =  2.93226E-48                                                           

  59.                                                                                 

  60. ----------------------------------------                                        

  61.                                                                                 

  62. ABOUT TO COMPUTE  2.93226E-48  /  139.184                                       

  63. RESULT =  2.10675E-50                                                           

  64.                                                                                 

  65. ----------------------------------------                                        

  66.                                                                                 

  67. ABOUT TO COMPUTE  2.10675E-50  /  228.007                                       

  68. RESULT =  9.23986E-53                                                           

  69.                                                                                 

  70. ----------------------------------------                                        

  71.                                                                                 

  72. ABOUT TO COMPUTE  9.23986E-53  /  392.412                                       

  73. RESULT =  2.35463E-55                                                           

  74.                                                                                 

  75. ----------------------------------------                                        

  76.                                                                                 

  77. ABOUT TO COMPUTE  2.35463E-55  /  713.045                                       

  78. RESULT =  3.30222E-58                                                           

  79.                                                                                 

  80. ----------------------------------------                                        

  81.                                                                                 

  82. ABOUT TO COMPUTE  3.30222E-58  /  1375.4                                        

  83. RESULT =  2.40092E-61                                                           

  84.                                                                                 

  85. ----------------------------------------                                        

  86.                                                                                 

  87. ABOUT TO COMPUTE  2.40092E-61  /  2833.16                                       

  88. RESULT =  8.47435E-65                                                           

  89.                                                                                 

  90. ----------------------------------------                                        

  91.                                                                                 

  92. ABOUT TO COMPUTE  8.47435E-65  /  6273.33                                       

  93. RESULT =  1.35085E-68                                                           

  94.                                                                                 

  95. ----------------------------------------                                        

  96.                                                                                 

  97. ABOUT TO COMPUTE  1.35085E-68  /  15040.                                        

  98. RESULT =  8.98173E-73                                                           

  99.                                                                                 

  100. ----------------------------------------                                        

  101.                                                                                 

  102. ABOUT TO COMPUTE  8.98173E-73  /  39352.6                                       

  103. RESULT =  2.28238E-77                                                           

  104.                                                                                 

  105. ----------------------------------------                                        

  106.                                                                                 

  107. ABOUT TO COMPUTE  2.28238E-77  /  113363.                                       

  108. RESULT =  2.01334E-82                                                           

  109.                                                                                 

  110. ----------------------------------------                                        

  111.                                                                                 

  112. ABOUT TO COMPUTE  2.01334E-82  /  363009.                                       

  113. RESULT =  5.54625E-88                                                           

  114.                                                                                 

  115. ----------------------------------------                                        

  116.                                                                                 

  117. ABOUT TO COMPUTE  5.54625E-88  /  1.3059E+6                                     

  118. RESULT =  4.24708E-94                                                           

  119.                                                                                 

  120. ----------------------------------------                                        

  121.                                                                                 

  122. ABOUT TO COMPUTE  4.24708E-94  /  5.33949E+6                                    

  123. RESULT =  7.95409E-101                                                          

  124.                                                                                 

  125. ----------------------------------------                                        

  126.                                                                                 

  127. ABOUT TO COMPUTE  7.95409E-101  /  2.51333E+7                                   

  128. RESULT =  3.16476E-108                                                          

  129.                                                                                 

  130. ----------------------------------------                                        

  131.                                                                                 

  132. ABOUT TO COMPUTE  3.16476E-108  /  1.38126E+8                                   

  133. RESULT =  2.29121E-116                                                          

  134.                                                                                 

  135. ----------------------------------------                                        

  136.                                                                                 

  137. ABOUT TO COMPUTE  2.29121E-116  /  9.00124E+8                                   

  138. RESULT =  2.54544E-125                                                          

  139.                                                                                 

  140. ----------------------------------------                                        

  141.                                                                                 

  142. ABOUT TO COMPUTE  2.54544E-125  /  7.0751E+9                                    

  143. RESULT =  3.59775E-135                                                          

  144.                                                                                 

  145. ----------------------------------------                                        

  146.                                                                                 

  147. ABOUT TO COMPUTE  3.59775E-135  /  6.83449E+10                                  

  148. RESULT =  5.26411E-146                                                          

  149.                                                                                 

  150. ----------------------------------------                                        

  151.                                                                                 

  152. ABOUT TO COMPUTE  5.26411E-146  /  8.28279E+11                                  

  153. RESULT =  6.35548E-158                                                          

  154.                                                                                 

  155. ----------------------------------------                                        

  156.                                                                                 

  157. ABOUT TO COMPUTE  6.35548E-158  /  1.28823E+13                                  

  158. RESULT =  4.93349E-171                                                          

  159.                                                                                 

  160. ----------------------------------------                                        

  161.                                                                                 

  162. ABOUT TO COMPUTE  4.93349E-171  /  2.63629E+14                                  

  163. RESULT =  1.87137E-185                                                          

  164.                                                                                 

  165. ----------------------------------------                                        

  166.                                                                                 

  167. ABOUT TO COMPUTE  1.87137E-185  /  7.29614E+15                                  

  168. RESULT =  2.56488E-201                                                          

  169.                                                                                 

  170. ----------------------------------------                                        

  171.                                                                                 

  172. ABOUT TO COMPUTE  2.56488E-201  /  2.81451E+17                                  

  173. RESULT =  9.11308E-219                                                          

  174.                                                                                 

  175. ----------------------------------------                                        

  176.                                                                                 

  177. ABOUT TO COMPUTE  9.11308E-219  /  1.56438E+19                                  

  178. RESULT =  5.82536E-238                                                          

  179.                                                                                 

  180. ----------------------------------------                                        

  181.                                                                                 

  182. ABOUT TO COMPUTE  5.82536E-238  /  1.2995E+21                                   

  183. RESULT =  4.48276E-259                                                          

  184.                                                                                 

  185. ----------------------------------------                                        

  186.                                                                                 

  187. ABOUT TO COMPUTE  4.48276E-259  /  1.6794E+23                                   

  188. RESULT =  2.66926E-282                                                          

  189.                                                                                 

  190. ----------------------------------------                                        

  191.                                                                                 

  192. ABOUT TO COMPUTE  2.66926E-282  /  3.52915E+25                                  

  193. RESULT =  7.56348E-308                                                          

  194.                                                                                 

  195. ----------------------------------------                                        

  196.                                                                                 

  197. ABOUT TO COMPUTE  7.56348E-308  /  1.26601E+28                                  

  198. RESULT =  0                                                                     

  199.                                                                                 

  200. ----------------------------------------                                        

  201.                                                                                 

  202. *** TEST PASSED ***                                                             

  203.                                                                                 

  204.                 END TEST                                                        

  205.                                                                                 

  206. SECTION 33.2: NEGATIVE UNDERFLOW                                                

  207.                                                                                 

  208. THIS SECTION TESTS THE RESULT OF EXPRESSION EVALUATION                          

  209. GREATER THAN NEGATIVE MACHINE INFINITESIMAL.                                    

  210.                                                                                 

  211. TO PASS THIS TEST:                                                              

  212.                                                                                 

  213.     1) A MESSAGE IDENTIFYING AN EXCEPTION MAY BE                                

  214.        DISPLAYED (NOT MANDATORY), AND                                           

  215.                                                                                 

  216.     2) ZERO MUST BE SUPPLIED AS THE VALUE                                       

  217.        OF THE EXPRESSION.                                                       

  218.                                                                                 

  219.                BEGIN TEST                                                       

  220.                                                                                 

  221. ABOUT TO COMPUTE -8.E-37  /  10                                                 

  222. RESULT = -8.E-38                                                                

  223.                                                                                 

  224. ----------------------------------------                                        

  225.                                                                                 

  226. ABOUT TO COMPUTE -8.E-38  /  12.5893                                            

  227. RESULT = -6.35463E-39                                                           

  228.                                                                                 

  229. ----------------------------------------                                        

  230.                                                                                 

  231. ABOUT TO COMPUTE -6.35463E-39  /  16.2181                                       

  232. RESULT = -3.91823E-40                                                           

  233.                                                                                 

  234. ----------------------------------------                                        

  235.                                                                                 

  236. ABOUT TO COMPUTE -3.91823E-40  /  21.4289                                       

  237. RESULT = -1.82848E-41                                                           

  238.                                                                                 

  239. ----------------------------------------                                        

  240.                                                                                 

  241. ABOUT TO COMPUTE -1.82848E-41  /  29.1139                                       

  242. RESULT = -6.28044E-43                                                           

  243.                                                                                 

  244. ----------------------------------------                                        

  245.                                                                                 

  246. ABOUT TO COMPUTE -6.28044E-43  /  40.7859                                       

  247. RESULT = -1.53986E-44                                                           

  248.                                                                                 

  249. ----------------------------------------                                        

  250.                                                                                 

  251. ABOUT TO COMPUTE -1.53986E-44  /  59.0964                                       

  252. RESULT = -2.60567E-46                                                           

  253.                                                                                 

  254. ----------------------------------------                                        

  255.                                                                                 

  256. ABOUT TO COMPUTE -2.60567E-46  /  88.8622                                       

  257. RESULT = -2.93226E-48                                                           

  258.                                                                                 

  259. ----------------------------------------                                        

  260.                                                                                 

  261. ABOUT TO COMPUTE -2.93226E-48  /  139.184                                       

  262. RESULT = -2.10675E-50                                                           

  263.                                                                                 

  264. ----------------------------------------                                        

  265.                                                                                 

  266. ABOUT TO COMPUTE -2.10675E-50  /  228.007                                       

  267. RESULT = -9.23986E-53                                                           

  268.                                                                                 

  269. ----------------------------------------                                        

  270.                                                                                 

  271. ABOUT TO COMPUTE -9.23986E-53  /  392.412                                       

  272. RESULT = -2.35463E-55                                                           

  273.                                                                                 

  274. ----------------------------------------                                        

  275.                                                                                 

  276. ABOUT TO COMPUTE -2.35463E-55  /  713.045                                       

  277. RESULT = -3.30222E-58                                                           

  278.                                                                                 

  279. ----------------------------------------                                        

  280.                                                                                 

  281. ABOUT TO COMPUTE -3.30222E-58  /  1375.4                                        

  282. RESULT = -2.40092E-61                                                           

  283.                                                                                 

  284. ----------------------------------------                                        

  285.                                                                                 

  286. ABOUT TO COMPUTE -2.40092E-61  /  2833.16                                       

  287. RESULT = -8.47435E-65                                                           

  288.                                                                                 

  289. ----------------------------------------                                        

  290.                                                                                 

  291. ABOUT TO COMPUTE -8.47435E-65  /  6273.33                                       

  292. RESULT = -1.35085E-68                                                           

  293.                                                                                 

  294. ----------------------------------------                                        

  295.                                                                                 

  296. ABOUT TO COMPUTE -1.35085E-68  /  15040.                                        

  297. RESULT = -8.98173E-73                                                           

  298.                                                                                 

  299. ----------------------------------------                                        

  300.                                                                                 

  301. ABOUT TO COMPUTE -8.98173E-73  /  39352.6                                       

  302. RESULT = -2.28238E-77                                                           

  303.                                                                                 

  304. ----------------------------------------                                        

  305.                                                                                 

  306. ABOUT TO COMPUTE -2.28238E-77  /  113363.                                       

  307. RESULT = -2.01334E-82                                                           

  308.                                                                                 

  309. ----------------------------------------                                        

  310.                                                                                 

  311. ABOUT TO COMPUTE -2.01334E-82  /  363009.                                       

  312. RESULT = -5.54625E-88                                                           

  313.                                                                                 

  314. ----------------------------------------                                        

  315.                                                                                 

  316. ABOUT TO COMPUTE -5.54625E-88  /  1.3059E+6                                     

  317. RESULT = -4.24708E-94                                                           

  318.                                                                                 

  319. ----------------------------------------                                        

  320.                                                                                 

  321. ABOUT TO COMPUTE -4.24708E-94  /  5.33949E+6                                    

  322. RESULT = -7.95409E-101                                                          

  323.                                                                                 

  324. ----------------------------------------                                        

  325.                                                                                 

  326. ABOUT TO COMPUTE -7.95409E-101  /  2.51333E+7                                   

  327. RESULT = -3.16476E-108                                                          

  328.                                                                                 

  329. ----------------------------------------                                        

  330.                                                                                 

  331. ABOUT TO COMPUTE -3.16476E-108  /  1.38126E+8                                   

  332. RESULT = -2.29121E-116                                                          

  333.                                                                                 

  334. ----------------------------------------                                        

  335.                                                                                 

  336. ABOUT TO COMPUTE -2.29121E-116  /  9.00124E+8                                   

  337. RESULT = -2.54544E-125                                                          

  338.                                                                                 

  339. ----------------------------------------                                        

  340.                                                                                 

  341. ABOUT TO COMPUTE -2.54544E-125  /  7.0751E+9                                    

  342. RESULT = -3.59775E-135                                                          

  343.                                                                                 

  344. ----------------------------------------                                        

  345.                                                                                 

  346. ABOUT TO COMPUTE -3.59775E-135  /  6.83449E+10                                  

  347. RESULT = -5.26411E-146                                                          

  348.                                                                                 

  349. ----------------------------------------                                        

  350.                                                                                 

  351. ABOUT TO COMPUTE -5.26411E-146  /  8.28279E+11                                  

  352. RESULT = -6.35548E-158                                                          

  353.                                                                                 

  354. ----------------------------------------                                        

  355.                                                                                 

  356. ABOUT TO COMPUTE -6.35548E-158  /  1.28823E+13                                  

  357. RESULT = -4.93349E-171                                                          

  358.                                                                                 

  359. ----------------------------------------                                        

  360.                                                                                 

  361. ABOUT TO COMPUTE -4.93349E-171  /  2.63629E+14                                  

  362. RESULT = -1.87137E-185                                                          

  363.                                                                                 

  364. ----------------------------------------                                        

  365.                                                                                 

  366. ABOUT TO COMPUTE -1.87137E-185  /  7.29614E+15                                  

  367. RESULT = -2.56488E-201                                                          

  368.                                                                                 

  369. ----------------------------------------                                        

  370.                                                                                 

  371. ABOUT TO COMPUTE -2.56488E-201  /  2.81451E+17                                  

  372. RESULT = -9.11308E-219                                                          

  373.                                                                                 

  374. ----------------------------------------                                        

  375.                                                                                 

  376. ABOUT TO COMPUTE -9.11308E-219  /  1.56438E+19                                  

  377. RESULT = -5.82536E-238                                                          

  378.                                                                                 

  379. ----------------------------------------                                        

  380.                                                                                 

  381. ABOUT TO COMPUTE -5.82536E-238  /  1.2995E+21                                   

  382. RESULT = -4.48276E-259                                                          

  383.                                                                                 

  384. ----------------------------------------                                        

  385.                                                                                 

  386. ABOUT TO COMPUTE -4.48276E-259  /  1.6794E+23                                   

  387. RESULT = -2.66926E-282                                                          

  388.                                                                                 

  389. ----------------------------------------                                        

  390.                                                                                 

  391. ABOUT TO COMPUTE -2.66926E-282  /  3.52915E+25                                  

  392. RESULT = -7.56348E-308                                                          

  393.                                                                                 

  394. ----------------------------------------                                        

  395.                                                                                 

  396. ABOUT TO COMPUTE -7.56348E-308  /  1.26601E+28                                  

  397. RESULT =  0                                                                     

  398.                                                                                 

  399. ----------------------------------------                                        

  400.                                                                                 

  401. *** TEST PASSED ***                                                             

  402.                                                                                 

  403.                 END TEST                                                        

  404.                                                                                 

  405. END PROGRAM 33