formatfloat_testcases.txt 7.5 KB

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  1. -- 'f' code formatting, with explicit precision (>= 0). Output always
  2. -- has the given number of places after the point; zeros are added if
  3. -- necessary to make this true.
  4. -- zeros
  5. %.0f 0 -> 0
  6. %.1f 0 -> 0.0
  7. %.2f 0 -> 0.00
  8. %.3f 0 -> 0.000
  9. %.50f 0 -> 0.00000000000000000000000000000000000000000000000000
  10. -- precision 0; result should never include a .
  11. %.0f 1.5 -> 2
  12. %.0f 2.5 -> 2
  13. %.0f 3.5 -> 4
  14. %.0f 0.0 -> 0
  15. %.0f 0.1 -> 0
  16. %.0f 0.001 -> 0
  17. %.0f 10.0 -> 10
  18. %.0f 10.1 -> 10
  19. %.0f 10.01 -> 10
  20. %.0f 123.456 -> 123
  21. %.0f 1234.56 -> 1235
  22. %.0f 1e49 -> 9999999999999999464902769475481793196872414789632
  23. %.0f 9.9999999999999987e+49 -> 99999999999999986860582406952576489172979654066176
  24. %.0f 1e50 -> 100000000000000007629769841091887003294964970946560
  25. -- precision 1
  26. %.1f 0.0001 -> 0.0
  27. %.1f 0.001 -> 0.0
  28. %.1f 0.01 -> 0.0
  29. %.1f 0.04 -> 0.0
  30. %.1f 0.06 -> 0.1
  31. %.1f 0.25 -> 0.2
  32. %.1f 0.75 -> 0.8
  33. %.1f 1.4 -> 1.4
  34. %.1f 1.5 -> 1.5
  35. %.1f 10.0 -> 10.0
  36. %.1f 1000.03 -> 1000.0
  37. %.1f 1234.5678 -> 1234.6
  38. %.1f 1234.7499 -> 1234.7
  39. %.1f 1234.75 -> 1234.8
  40. -- precision 2
  41. %.2f 0.0001 -> 0.00
  42. %.2f 0.001 -> 0.00
  43. %.2f 0.004999 -> 0.00
  44. %.2f 0.005001 -> 0.01
  45. %.2f 0.01 -> 0.01
  46. %.2f 0.125 -> 0.12
  47. %.2f 0.375 -> 0.38
  48. %.2f 1234500 -> 1234500.00
  49. %.2f 1234560 -> 1234560.00
  50. %.2f 1234567 -> 1234567.00
  51. %.2f 1234567.8 -> 1234567.80
  52. %.2f 1234567.89 -> 1234567.89
  53. %.2f 1234567.891 -> 1234567.89
  54. %.2f 1234567.8912 -> 1234567.89
  55. -- alternate form always includes a decimal point. This only
  56. -- makes a difference when the precision is 0.
  57. %#.0f 0 -> 0.
  58. %#.1f 0 -> 0.0
  59. %#.0f 1.5 -> 2.
  60. %#.0f 2.5 -> 2.
  61. %#.0f 10.1 -> 10.
  62. %#.0f 1234.56 -> 1235.
  63. %#.1f 1.4 -> 1.4
  64. %#.2f 0.375 -> 0.38
  65. -- if precision is omitted it defaults to 6
  66. %f 0 -> 0.000000
  67. %f 1230000 -> 1230000.000000
  68. %f 1234567 -> 1234567.000000
  69. %f 123.4567 -> 123.456700
  70. %f 1.23456789 -> 1.234568
  71. %f 0.00012 -> 0.000120
  72. %f 0.000123 -> 0.000123
  73. %f 0.00012345 -> 0.000123
  74. %f 0.000001 -> 0.000001
  75. %f 0.0000005001 -> 0.000001
  76. %f 0.0000004999 -> 0.000000
  77. -- 'e' code formatting with explicit precision (>= 0). Output should
  78. -- always have exactly the number of places after the point that were
  79. -- requested.
  80. -- zeros
  81. %.0e 0 -> 0e+00
  82. %.1e 0 -> 0.0e+00
  83. %.2e 0 -> 0.00e+00
  84. %.10e 0 -> 0.0000000000e+00
  85. %.50e 0 -> 0.00000000000000000000000000000000000000000000000000e+00
  86. -- precision 0. no decimal point in the output
  87. %.0e 0.01 -> 1e-02
  88. %.0e 0.1 -> 1e-01
  89. %.0e 1 -> 1e+00
  90. %.0e 10 -> 1e+01
  91. %.0e 100 -> 1e+02
  92. %.0e 0.012 -> 1e-02
  93. %.0e 0.12 -> 1e-01
  94. %.0e 1.2 -> 1e+00
  95. %.0e 12 -> 1e+01
  96. %.0e 120 -> 1e+02
  97. %.0e 123.456 -> 1e+02
  98. %.0e 0.000123456 -> 1e-04
  99. %.0e 123456000 -> 1e+08
  100. %.0e 0.5 -> 5e-01
  101. %.0e 1.4 -> 1e+00
  102. %.0e 1.5 -> 2e+00
  103. %.0e 1.6 -> 2e+00
  104. %.0e 2.4999999 -> 2e+00
  105. %.0e 2.5 -> 2e+00
  106. %.0e 2.5000001 -> 3e+00
  107. %.0e 3.499999999999 -> 3e+00
  108. %.0e 3.5 -> 4e+00
  109. %.0e 4.5 -> 4e+00
  110. %.0e 5.5 -> 6e+00
  111. %.0e 6.5 -> 6e+00
  112. %.0e 7.5 -> 8e+00
  113. %.0e 8.5 -> 8e+00
  114. %.0e 9.4999 -> 9e+00
  115. %.0e 9.5 -> 1e+01
  116. %.0e 10.5 -> 1e+01
  117. %.0e 14.999 -> 1e+01
  118. %.0e 15 -> 2e+01
  119. -- precision 1
  120. %.1e 0.0001 -> 1.0e-04
  121. %.1e 0.001 -> 1.0e-03
  122. %.1e 0.01 -> 1.0e-02
  123. %.1e 0.1 -> 1.0e-01
  124. %.1e 1 -> 1.0e+00
  125. %.1e 10 -> 1.0e+01
  126. %.1e 100 -> 1.0e+02
  127. %.1e 120 -> 1.2e+02
  128. %.1e 123 -> 1.2e+02
  129. %.1e 123.4 -> 1.2e+02
  130. -- precision 2
  131. %.2e 0.00013 -> 1.30e-04
  132. %.2e 0.000135 -> 1.35e-04
  133. %.2e 0.0001357 -> 1.36e-04
  134. %.2e 0.0001 -> 1.00e-04
  135. %.2e 0.001 -> 1.00e-03
  136. %.2e 0.01 -> 1.00e-02
  137. %.2e 0.1 -> 1.00e-01
  138. %.2e 1 -> 1.00e+00
  139. %.2e 10 -> 1.00e+01
  140. %.2e 100 -> 1.00e+02
  141. %.2e 1000 -> 1.00e+03
  142. %.2e 1500 -> 1.50e+03
  143. %.2e 1590 -> 1.59e+03
  144. %.2e 1598 -> 1.60e+03
  145. %.2e 1598.7 -> 1.60e+03
  146. %.2e 1598.76 -> 1.60e+03
  147. %.2e 9999 -> 1.00e+04
  148. -- omitted precision defaults to 6
  149. %e 0 -> 0.000000e+00
  150. %e 165 -> 1.650000e+02
  151. %e 1234567 -> 1.234567e+06
  152. %e 12345678 -> 1.234568e+07
  153. %e 1.1 -> 1.100000e+00
  154. -- alternate form always contains a decimal point. This only makes
  155. -- a difference when precision is 0.
  156. %#.0e 0.01 -> 1.e-02
  157. %#.0e 0.1 -> 1.e-01
  158. %#.0e 1 -> 1.e+00
  159. %#.0e 10 -> 1.e+01
  160. %#.0e 100 -> 1.e+02
  161. %#.0e 0.012 -> 1.e-02
  162. %#.0e 0.12 -> 1.e-01
  163. %#.0e 1.2 -> 1.e+00
  164. %#.0e 12 -> 1.e+01
  165. %#.0e 120 -> 1.e+02
  166. %#.0e 123.456 -> 1.e+02
  167. %#.0e 0.000123456 -> 1.e-04
  168. %#.0e 123456000 -> 1.e+08
  169. %#.0e 0.5 -> 5.e-01
  170. %#.0e 1.4 -> 1.e+00
  171. %#.0e 1.5 -> 2.e+00
  172. %#.0e 1.6 -> 2.e+00
  173. %#.0e 2.4999999 -> 2.e+00
  174. %#.0e 2.5 -> 2.e+00
  175. %#.0e 2.5000001 -> 3.e+00
  176. %#.0e 3.499999999999 -> 3.e+00
  177. %#.0e 3.5 -> 4.e+00
  178. %#.0e 4.5 -> 4.e+00
  179. %#.0e 5.5 -> 6.e+00
  180. %#.0e 6.5 -> 6.e+00
  181. %#.0e 7.5 -> 8.e+00
  182. %#.0e 8.5 -> 8.e+00
  183. %#.0e 9.4999 -> 9.e+00
  184. %#.0e 9.5 -> 1.e+01
  185. %#.0e 10.5 -> 1.e+01
  186. %#.0e 14.999 -> 1.e+01
  187. %#.0e 15 -> 2.e+01
  188. %#.1e 123.4 -> 1.2e+02
  189. %#.2e 0.0001357 -> 1.36e-04
  190. -- 'g' code formatting.
  191. -- zeros
  192. %.0g 0 -> 0
  193. %.1g 0 -> 0
  194. %.2g 0 -> 0
  195. %.3g 0 -> 0
  196. %.4g 0 -> 0
  197. %.10g 0 -> 0
  198. %.50g 0 -> 0
  199. %.100g 0 -> 0
  200. -- precision 0 doesn't make a lot of sense for the 'g' code (what does
  201. -- it mean to have no significant digits?); in practice, it's interpreted
  202. -- as identical to precision 1
  203. %.0g 1000 -> 1e+03
  204. %.0g 100 -> 1e+02
  205. %.0g 10 -> 1e+01
  206. %.0g 1 -> 1
  207. %.0g 0.1 -> 0.1
  208. %.0g 0.01 -> 0.01
  209. %.0g 1e-3 -> 0.001
  210. %.0g 1e-4 -> 0.0001
  211. %.0g 1e-5 -> 1e-05
  212. %.0g 1e-6 -> 1e-06
  213. %.0g 12 -> 1e+01
  214. %.0g 120 -> 1e+02
  215. %.0g 1.2 -> 1
  216. %.0g 0.12 -> 0.1
  217. %.0g 0.012 -> 0.01
  218. %.0g 0.0012 -> 0.001
  219. %.0g 0.00012 -> 0.0001
  220. %.0g 0.000012 -> 1e-05
  221. %.0g 0.0000012 -> 1e-06
  222. -- precision 1 identical to precision 0
  223. %.1g 1000 -> 1e+03
  224. %.1g 100 -> 1e+02
  225. %.1g 10 -> 1e+01
  226. %.1g 1 -> 1
  227. %.1g 0.1 -> 0.1
  228. %.1g 0.01 -> 0.01
  229. %.1g 1e-3 -> 0.001
  230. %.1g 1e-4 -> 0.0001
  231. %.1g 1e-5 -> 1e-05
  232. %.1g 1e-6 -> 1e-06
  233. %.1g 12 -> 1e+01
  234. %.1g 120 -> 1e+02
  235. %.1g 1.2 -> 1
  236. %.1g 0.12 -> 0.1
  237. %.1g 0.012 -> 0.01
  238. %.1g 0.0012 -> 0.001
  239. %.1g 0.00012 -> 0.0001
  240. %.1g 0.000012 -> 1e-05
  241. %.1g 0.0000012 -> 1e-06
  242. -- precision 2
  243. %.2g 1000 -> 1e+03
  244. %.2g 100 -> 1e+02
  245. %.2g 10 -> 10
  246. %.2g 1 -> 1
  247. %.2g 0.1 -> 0.1
  248. %.2g 0.01 -> 0.01
  249. %.2g 0.001 -> 0.001
  250. %.2g 1e-4 -> 0.0001
  251. %.2g 1e-5 -> 1e-05
  252. %.2g 1e-6 -> 1e-06
  253. %.2g 1234 -> 1.2e+03
  254. %.2g 123 -> 1.2e+02
  255. %.2g 12.3 -> 12
  256. %.2g 1.23 -> 1.2
  257. %.2g 0.123 -> 0.12
  258. %.2g 0.0123 -> 0.012
  259. %.2g 0.00123 -> 0.0012
  260. %.2g 0.000123 -> 0.00012
  261. %.2g 0.0000123 -> 1.2e-05
  262. -- bad cases from http://bugs.python.org/issue9980
  263. %.12g 38210.0 -> 38210
  264. %.12g 37210.0 -> 37210
  265. %.12g 36210.0 -> 36210
  266. -- alternate g formatting: always include decimal point and
  267. -- exactly <precision> significant digits.
  268. %#.0g 0 -> 0.
  269. %#.1g 0 -> 0.
  270. %#.2g 0 -> 0.0
  271. %#.3g 0 -> 0.00
  272. %#.4g 0 -> 0.000
  273. %#.0g 0.2 -> 0.2
  274. %#.1g 0.2 -> 0.2
  275. %#.2g 0.2 -> 0.20
  276. %#.3g 0.2 -> 0.200
  277. %#.4g 0.2 -> 0.2000
  278. %#.10g 0.2 -> 0.2000000000
  279. %#.0g 2 -> 2.
  280. %#.1g 2 -> 2.
  281. %#.2g 2 -> 2.0
  282. %#.3g 2 -> 2.00
  283. %#.4g 2 -> 2.000
  284. %#.0g 20 -> 2.e+01
  285. %#.1g 20 -> 2.e+01
  286. %#.2g 20 -> 20.
  287. %#.3g 20 -> 20.0
  288. %#.4g 20 -> 20.00
  289. %#.0g 234.56 -> 2.e+02
  290. %#.1g 234.56 -> 2.e+02
  291. %#.2g 234.56 -> 2.3e+02
  292. %#.3g 234.56 -> 235.
  293. %#.4g 234.56 -> 234.6
  294. %#.5g 234.56 -> 234.56
  295. %#.6g 234.56 -> 234.560
  296. -- repr formatting. Result always includes decimal point and at
  297. -- least one digit after the point, or an exponent.
  298. %r 0 -> 0.0
  299. %r 1 -> 1.0
  300. %r 0.01 -> 0.01
  301. %r 0.02 -> 0.02
  302. %r 0.03 -> 0.03
  303. %r 0.04 -> 0.04
  304. %r 0.05 -> 0.05
  305. -- values >= 1e16 get an exponent
  306. %r 10 -> 10.0
  307. %r 100 -> 100.0
  308. %r 1e15 -> 1000000000000000.0
  309. %r 9.999e15 -> 9999000000000000.0
  310. %r 9999999999999998 -> 9999999999999998.0
  311. %r 9999999999999999 -> 1e+16
  312. %r 1e16 -> 1e+16
  313. %r 1e17 -> 1e+17
  314. -- as do values < 1e-4
  315. %r 1e-3 -> 0.001
  316. %r 1.001e-4 -> 0.0001001
  317. %r 1.0000000000000001e-4 -> 0.0001
  318. %r 1.000000000000001e-4 -> 0.0001000000000000001
  319. %r 1.00000000001e-4 -> 0.000100000000001
  320. %r 1.0000000001e-4 -> 0.00010000000001
  321. %r 1e-4 -> 0.0001
  322. %r 0.99999999999999999e-4 -> 0.0001
  323. %r 0.9999999999999999e-4 -> 9.999999999999999e-05
  324. %r 0.999999999999e-4 -> 9.99999999999e-05
  325. %r 0.999e-4 -> 9.99e-05
  326. %r 1e-5 -> 1e-05