| Anonymous | Login | Signup for a new account | 02-09-2010 14:36 UTC |
| Main | My View | View Issues | Change Log | Docs |
| Viewing Issue Simple Details [ Jump to Notes ] | [ View Advanced ] [ Issue History ] [ Print ] | ||||||||
| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0003373 | [Squeak] Kernel | minor | always | 03-28-06 21:14 | 04-30-06 20:55 | ||||
| Reporter | nicolas cellier | View Status | public | ||||||
| Assigned To | |||||||||
| Priority | normal | Resolution | fixed | ||||||
| Status | closed | Product Version | 3.9 | ||||||
| Summary | 0003373: Float asFraction does not handle gradual underflow | ||||||||
| Description |
as explicitely stated in Float>>#asTrueFraction comment "(Does not handle gradual underflow or NANs.)" 1.0e-316 asFraction asFloat. "will answer 1.1125369342536e-308" ouch! |
||||||||
| Additional Information | |||||||||
| Attached Files |
 Float-asFraction-Test.1.cs [^] (350 bytes) 03-28-06 21:38 Float-asFraction-Patch.1.cs [^] (2,300 bytes) 03-28-06 21:40 Float-asFraction-Patch.2.cs [^] (2,327 bytes) 03-29-06 00:59 |
||||||||
|
|
|||||||||
Notes |
|
|
(0004593 - 161 - 173 - 173 - 173 - 173 - 173) nicolas cellier 03-28-06 21:41 |
a test and a patch are included. I did not check that patch was the better possible vis a vis Fraction reduction (gcd: time spent ?), but it seems to work OK. |
|
(0004596 - 270 - 300 - 300 - 300 - 300 - 300) nicolas cellier 03-29-06 01:02 |
Second version of Float>>asTrueFraction is just to speed things up a little. Rationale: i have to use it in Float hash and this will degrade performances... Due to LargeInteger arithmetic, this is not a very efficient algorithm. Should think of writing a primitive. |
|
(0004832 - 11 - 11 - 11 - 11 - 11 - 11) ducasse 04-30-06 20:37 |
in 39a-7027 |
|
(0004833 - 11 - 11 - 11 - 11 - 11 - 11) ducasse 04-30-06 20:55 |
in 39a-7027 |
|
Issue History |
|||
| Date Modified | Username | Field | Change |
| 03-28-06 21:14 | nicolas cellier | New Issue | |
| 03-28-06 21:38 | nicolas cellier | File Added: Float-asFraction-Test.1.cs | |
| 03-28-06 21:40 | nicolas cellier | File Added: Float-asFraction-Patch.1.cs | |
| 03-28-06 21:41 | nicolas cellier | Note Added: 0004593 | |
| 03-29-06 00:59 | nicolas cellier | File Added: Float-asFraction-Patch.2.cs | |
| 03-29-06 01:02 | nicolas cellier | Note Added: 0004596 | |
| 04-30-06 20:37 | ducasse | Status | new => closed |
| 04-30-06 20:37 | ducasse | Note Added: 0004832 | |
| 04-30-06 20:37 | ducasse | Resolution | open => fixed |
| 04-30-06 20:55 | ducasse | Note Added: 0004833 | |
| 03-28-09 01:05 | wiz | Relationship added | related to 0007323 |
| Mantis 1.0.8[^]
Copyright © 2000 - 2007 Mantis Group
58 total queries executed. 38 unique queries executed. |  |
