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 5-- zeros 6%.0f 0 -> 0 7%.1f 0 -> 0.0 8%.2f 0 -> 0.00 9%.3f 0 -> 0.000 10%.50f 0 -> 0.00000000000000000000000000000000000000000000000000 11 12-- precision 0; result should never include a . 13%.0f 1.5 -> 2 14%.0f 2.5 -> 2 15%.0f 3.5 -> 4 16%.0f 0.0 -> 0 17%.0f 0.1 -> 0 18%.0f 0.001 -> 0 19%.0f 10.0 -> 10 20%.0f 10.1 -> 10 21%.0f 10.01 -> 10 22%.0f 123.456 -> 123 23%.0f 1234.56 -> 1235 24%.0f 1e49 -> 9999999999999999464902769475481793196872414789632 25%.0f 9.9999999999999987e+49 -> 99999999999999986860582406952576489172979654066176 26%.0f 1e50 -> 100000000000000007629769841091887003294964970946560 27 28-- precision 1 29%.1f 0.0001 -> 0.0 30%.1f 0.001 -> 0.0 31%.1f 0.01 -> 0.0 32%.1f 0.04 -> 0.0 33%.1f 0.06 -> 0.1 34%.1f 0.25 -> 0.2 35%.1f 0.75 -> 0.8 36%.1f 1.4 -> 1.4 37%.1f 1.5 -> 1.5 38%.1f 10.0 -> 10.0 39%.1f 1000.03 -> 1000.0 40%.1f 1234.5678 -> 1234.6 41%.1f 1234.7499 -> 1234.7 42%.1f 1234.75 -> 1234.8 43 44-- precision 2 45%.2f 0.0001 -> 0.00 46%.2f 0.001 -> 0.00 47%.2f 0.004999 -> 0.00 48%.2f 0.005001 -> 0.01 49%.2f 0.01 -> 0.01 50%.2f 0.125 -> 0.12 51%.2f 0.375 -> 0.38 52%.2f 1234500 -> 1234500.00 53%.2f 1234560 -> 1234560.00 54%.2f 1234567 -> 1234567.00 55%.2f 1234567.8 -> 1234567.80 56%.2f 1234567.89 -> 1234567.89 57%.2f 1234567.891 -> 1234567.89 58%.2f 1234567.8912 -> 1234567.89 59 60-- alternate form always includes a decimal point. This only 61-- makes a difference when the precision is 0. 62%#.0f 0 -> 0. 63%#.1f 0 -> 0.0 64%#.0f 1.5 -> 2. 65%#.0f 2.5 -> 2. 66%#.0f 10.1 -> 10. 67%#.0f 1234.56 -> 1235. 68%#.1f 1.4 -> 1.4 69%#.2f 0.375 -> 0.38 70 71-- if precision is omitted it defaults to 6 72%f 0 -> 0.000000 73%f 1230000 -> 1230000.000000 74%f 1234567 -> 1234567.000000 75%f 123.4567 -> 123.456700 76%f 1.23456789 -> 1.234568 77%f 0.00012 -> 0.000120 78%f 0.000123 -> 0.000123 79%f 0.00012345 -> 0.000123 80%f 0.000001 -> 0.000001 81%f 0.0000005001 -> 0.000001 82%f 0.0000004999 -> 0.000000 83 84-- nans and infinities 85%f nan -> nan 86%f inf -> inf 87%f -infinity -> -inf 88%F nan -> NAN 89%F infinity -> INF 90%F -inf -> -INF 91 92-- 'e' code formatting with explicit precision (>= 0). Output should 93-- always have exactly the number of places after the point that were 94-- requested. 95 96-- zeros 97%.0e 0 -> 0e+00 98%.1e 0 -> 0.0e+00 99%.2e 0 -> 0.00e+00 100%.10e 0 -> 0.0000000000e+00 101%.50e 0 -> 0.00000000000000000000000000000000000000000000000000e+00 102 103-- precision 0. no decimal point in the output 104%.0e 0.01 -> 1e-02 105%.0e 0.1 -> 1e-01 106%.0e 1 -> 1e+00 107%.0e 10 -> 1e+01 108%.0e 100 -> 1e+02 109%.0e 0.012 -> 1e-02 110%.0e 0.12 -> 1e-01 111%.0e 1.2 -> 1e+00 112%.0e 12 -> 1e+01 113%.0e 120 -> 1e+02 114%.0e 123.456 -> 1e+02 115%.0e 0.000123456 -> 1e-04 116%.0e 123456000 -> 1e+08 117%.0e 0.5 -> 5e-01 118%.0e 1.4 -> 1e+00 119%.0e 1.5 -> 2e+00 120%.0e 1.6 -> 2e+00 121%.0e 2.4999999 -> 2e+00 122%.0e 2.5 -> 2e+00 123%.0e 2.5000001 -> 3e+00 124%.0e 3.499999999999 -> 3e+00 125%.0e 3.5 -> 4e+00 126%.0e 4.5 -> 4e+00 127%.0e 5.5 -> 6e+00 128%.0e 6.5 -> 6e+00 129%.0e 7.5 -> 8e+00 130%.0e 8.5 -> 8e+00 131%.0e 9.4999 -> 9e+00 132%.0e 9.5 -> 1e+01 133%.0e 10.5 -> 1e+01 134%.0e 14.999 -> 1e+01 135%.0e 15 -> 2e+01 136 137-- precision 1 138%.1e 0.0001 -> 1.0e-04 139%.1e 0.001 -> 1.0e-03 140%.1e 0.01 -> 1.0e-02 141%.1e 0.1 -> 1.0e-01 142%.1e 1 -> 1.0e+00 143%.1e 10 -> 1.0e+01 144%.1e 100 -> 1.0e+02 145%.1e 120 -> 1.2e+02 146%.1e 123 -> 1.2e+02 147%.1e 123.4 -> 1.2e+02 148 149-- precision 2 150%.2e 0.00013 -> 1.30e-04 151%.2e 0.000135 -> 1.35e-04 152%.2e 0.0001357 -> 1.36e-04 153%.2e 0.0001 -> 1.00e-04 154%.2e 0.001 -> 1.00e-03 155%.2e 0.01 -> 1.00e-02 156%.2e 0.1 -> 1.00e-01 157%.2e 1 -> 1.00e+00 158%.2e 10 -> 1.00e+01 159%.2e 100 -> 1.00e+02 160%.2e 1000 -> 1.00e+03 161%.2e 1500 -> 1.50e+03 162%.2e 1590 -> 1.59e+03 163%.2e 1598 -> 1.60e+03 164%.2e 1598.7 -> 1.60e+03 165%.2e 1598.76 -> 1.60e+03 166%.2e 9999 -> 1.00e+04 167 168-- omitted precision defaults to 6 169%e 0 -> 0.000000e+00 170%e 165 -> 1.650000e+02 171%e 1234567 -> 1.234567e+06 172%e 12345678 -> 1.234568e+07 173%e 1.1 -> 1.100000e+00 174 175-- alternate form always contains a decimal point. This only makes 176-- a difference when precision is 0. 177 178%#.0e 0.01 -> 1.e-02 179%#.0e 0.1 -> 1.e-01 180%#.0e 1 -> 1.e+00 181%#.0e 10 -> 1.e+01 182%#.0e 100 -> 1.e+02 183%#.0e 0.012 -> 1.e-02 184%#.0e 0.12 -> 1.e-01 185%#.0e 1.2 -> 1.e+00 186%#.0e 12 -> 1.e+01 187%#.0e 120 -> 1.e+02 188%#.0e 123.456 -> 1.e+02 189%#.0e 0.000123456 -> 1.e-04 190%#.0e 123456000 -> 1.e+08 191%#.0e 0.5 -> 5.e-01 192%#.0e 1.4 -> 1.e+00 193%#.0e 1.5 -> 2.e+00 194%#.0e 1.6 -> 2.e+00 195%#.0e 2.4999999 -> 2.e+00 196%#.0e 2.5 -> 2.e+00 197%#.0e 2.5000001 -> 3.e+00 198%#.0e 3.499999999999 -> 3.e+00 199%#.0e 3.5 -> 4.e+00 200%#.0e 4.5 -> 4.e+00 201%#.0e 5.5 -> 6.e+00 202%#.0e 6.5 -> 6.e+00 203%#.0e 7.5 -> 8.e+00 204%#.0e 8.5 -> 8.e+00 205%#.0e 9.4999 -> 9.e+00 206%#.0e 9.5 -> 1.e+01 207%#.0e 10.5 -> 1.e+01 208%#.0e 14.999 -> 1.e+01 209%#.0e 15 -> 2.e+01 210%#.1e 123.4 -> 1.2e+02 211%#.2e 0.0001357 -> 1.36e-04 212 213-- nans and infinities 214%e nan -> nan 215%e inf -> inf 216%e -infinity -> -inf 217%E nan -> NAN 218%E infinity -> INF 219%E -inf -> -INF 220 221-- 'g' code formatting. 222 223-- zeros 224%.0g 0 -> 0 225%.1g 0 -> 0 226%.2g 0 -> 0 227%.3g 0 -> 0 228%.4g 0 -> 0 229%.10g 0 -> 0 230%.50g 0 -> 0 231%.100g 0 -> 0 232 233-- precision 0 doesn't make a lot of sense for the 'g' code (what does 234-- it mean to have no significant digits?); in practice, it's interpreted 235-- as identical to precision 1 236%.0g 1000 -> 1e+03 237%.0g 100 -> 1e+02 238%.0g 10 -> 1e+01 239%.0g 1 -> 1 240%.0g 0.1 -> 0.1 241%.0g 0.01 -> 0.01 242%.0g 1e-3 -> 0.001 243%.0g 1e-4 -> 0.0001 244%.0g 1e-5 -> 1e-05 245%.0g 1e-6 -> 1e-06 246%.0g 12 -> 1e+01 247%.0g 120 -> 1e+02 248%.0g 1.2 -> 1 249%.0g 0.12 -> 0.1 250%.0g 0.012 -> 0.01 251%.0g 0.0012 -> 0.001 252%.0g 0.00012 -> 0.0001 253%.0g 0.000012 -> 1e-05 254%.0g 0.0000012 -> 1e-06 255 256-- precision 1 identical to precision 0 257%.1g 1000 -> 1e+03 258%.1g 100 -> 1e+02 259%.1g 10 -> 1e+01 260%.1g 1 -> 1 261%.1g 0.1 -> 0.1 262%.1g 0.01 -> 0.01 263%.1g 1e-3 -> 0.001 264%.1g 1e-4 -> 0.0001 265%.1g 1e-5 -> 1e-05 266%.1g 1e-6 -> 1e-06 267%.1g 12 -> 1e+01 268%.1g 120 -> 1e+02 269%.1g 1.2 -> 1 270%.1g 0.12 -> 0.1 271%.1g 0.012 -> 0.01 272%.1g 0.0012 -> 0.001 273%.1g 0.00012 -> 0.0001 274%.1g 0.000012 -> 1e-05 275%.1g 0.0000012 -> 1e-06 276 277-- precision 2 278%.2g 1000 -> 1e+03 279%.2g 100 -> 1e+02 280%.2g 10 -> 10 281%.2g 1 -> 1 282%.2g 0.1 -> 0.1 283%.2g 0.01 -> 0.01 284%.2g 0.001 -> 0.001 285%.2g 1e-4 -> 0.0001 286%.2g 1e-5 -> 1e-05 287%.2g 1e-6 -> 1e-06 288%.2g 1234 -> 1.2e+03 289%.2g 123 -> 1.2e+02 290%.2g 12.3 -> 12 291%.2g 1.23 -> 1.2 292%.2g 0.123 -> 0.12 293%.2g 0.0123 -> 0.012 294%.2g 0.00123 -> 0.0012 295%.2g 0.000123 -> 0.00012 296%.2g 0.0000123 -> 1.2e-05 297 298-- alternate g formatting: always include decimal point and 299-- exactly <precision> significant digits. 300%#.0g 0 -> 0. 301%#.1g 0 -> 0. 302%#.2g 0 -> 0.0 303%#.3g 0 -> 0.00 304%#.4g 0 -> 0.000 305 306%#.0g 0.2 -> 0.2 307%#.1g 0.2 -> 0.2 308%#.2g 0.2 -> 0.20 309%#.3g 0.2 -> 0.200 310%#.4g 0.2 -> 0.2000 311%#.10g 0.2 -> 0.2000000000 312 313%#.0g 2 -> 2. 314%#.1g 2 -> 2. 315%#.2g 2 -> 2.0 316%#.3g 2 -> 2.00 317%#.4g 2 -> 2.000 318 319%#.0g 20 -> 2.e+01 320%#.1g 20 -> 2.e+01 321%#.2g 20 -> 20. 322%#.3g 20 -> 20.0 323%#.4g 20 -> 20.00 324 325%#.0g 234.56 -> 2.e+02 326%#.1g 234.56 -> 2.e+02 327%#.2g 234.56 -> 2.3e+02 328%#.3g 234.56 -> 235. 329%#.4g 234.56 -> 234.6 330%#.5g 234.56 -> 234.56 331%#.6g 234.56 -> 234.560 332 333-- nans and infinities 334%g nan -> nan 335%g inf -> inf 336%g -infinity -> -inf 337%G nan -> NAN 338%G infinity -> INF 339%G -inf -> -INF 340 341-- for repr formatting see the separate test_short_repr test in 342-- test_float.py. Not all platforms use short repr for floats. 343 344-- str formatting. Result always includes decimal point and at 345-- least one digit after the point, or an exponent. 346%s 0 -> 0.0 347%s 1 -> 1.0 348 349%s 0.01 -> 0.01 350%s 0.02 -> 0.02 351%s 0.03 -> 0.03 352%s 0.04 -> 0.04 353%s 0.05 -> 0.05 354 355-- str truncates to 12 significant digits 356%s 1.234123412341 -> 1.23412341234 357%s 1.23412341234 -> 1.23412341234 358%s 1.2341234123 -> 1.2341234123 359 360-- values >= 1e11 get an exponent 361%s 10 -> 10.0 362%s 100 -> 100.0 363%s 1e10 -> 10000000000.0 364%s 9.999e10 -> 99990000000.0 365%s 99999999999 -> 99999999999.0 366%s 99999999999.9 -> 99999999999.9 367%s 99999999999.99 -> 1e+11 368%s 1e11 -> 1e+11 369%s 1e12 -> 1e+12 370 371-- as do values < 1e-4 372%s 1e-3 -> 0.001 373%s 1.001e-4 -> 0.0001001 374%s 1.000000000001e-4 -> 0.0001 375%s 1.00000000001e-4 -> 0.000100000000001 376%s 1.0000000001e-4 -> 0.00010000000001 377%s 1e-4 -> 0.0001 378%s 0.999999999999e-4 -> 9.99999999999e-05 379%s 0.999e-4 -> 9.99e-05 380%s 1e-5 -> 1e-05 381