Floating-point arithmetic: Revision history

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curprev 13:4313:43, 25 August 2025 Cloudream talk contribs m 123,949 bytes +55 →Other notable floating-point formats undo Tag: Visual edit

curprev 15:0715:07, 7 August 2025 NOTAROBOT1101 talk contribs 123,894 bytes +240 Expand section on FPU; add softfloat+hardfloat undo Tag: Visual edit

curprev 17:3317:33, 19 July 2025 Vincent Lefèvre talk contribs 123,654 bytes +14 →Incidents: Though the issue did not come from floating point, it is still due to the careless use of approximations: if they had use an exact arithmetic (thus not needing to approximate 0.1) or wrote their code based on an error analysis, this would not have happened. undo

curprev 13:2113:21, 17 July 2025 Taylor Riastradh Campbell talk contribs 123,640 bytes +106 →Incidents: Adjust phrasing after discussion on talk page: https://en.wikipedia.org/wiki/Talk:Floating-point_arithmetic#c-Vincent_Lef%C3%A8vre-20250717123000-Taylor_Riastradh_Campbell-20250717041600 Is this better? undo
curprev 05:0405:04, 17 July 2025 Taylor Riastradh Campbell talk contribs 123,534 bytes +15 →Incidents: Clarify. Change "error" since the earlier text no longer uses that word. undo
curprev 04:2204:22, 17 July 2025 Taylor Riastradh Campbell talk contribs 123,519 bytes 0 Fix reference name in previous change. undo
curprev 04:2104:21, 17 July 2025 Taylor Riastradh Campbell talk contribs 123,519 bytes +183 Restore conclusion about the actual nature of the Patriot missile failure: incomplete software change causing subtraction of incommensurate units, not floating-point error. See discussion on talk page for rationale: https://en.wikipedia.org/wiki/Talk:Floating-point_arithmetic#Patriot_missile_incident undo

curprev 11:3011:30, 9 July 2025 Vincent Lefèvre talk contribs 123,336 bytes −146 →Incidents: The intent is that there is a single time unit: 0.1s. The issue is that the software assumed that its accuracy did not matter; Skeel says: "this time difference should be in error by only 0.0001%, a truly insignificant amount". Something that may remain true... until a cancellation occurs like here. undo
curprev 01:1201:12, 9 July 2025 Taylor Riastradh Campbell talk contribs 123,482 bytes +957 →Incidents: Clarify what happened with the Patriot missile battery, which was, despite popular wisdom, not caused by using floating-point, but rather by using two different unit conversions that disagreed, with a discrepancy that increased with uptime. undo

curprev 00:0100:01, 30 June 2025 InfoManiac297 talk contribs 122,525 bytes 0 →Incidents: ce undo Tags: Mobile edit Mobile web edit Advanced mobile edit

curprev 01:3001:30, 20 June 2025 173.79.19.248 talk 122,525 bytes −34 has never been such an article undo

curprev 16:5316:53, 15 June 2025 Jacobolus talk contribs m 122,559 bytes −10 →Floating-point numbers: re-align long equation following typographic conventions, and manually size parens around summation sign (LaTeX default is too big) undo

curprev 21:5121:51, 9 June 2025 Vincent Lefèvre talk contribs 122,569 bytes +185 →History: clarification: it must be clear that the rounding is to the destination precision and that there is a single rounding (i.e. there are no intermediate results, these are the exact results that are directly rounded to the destination precision); also warn about the possible wider exponent range (which is explicitly allowed by IEEE 754-1985). undo
curprev 21:0521:05, 9 June 2025 Taylor Riastradh Campbell talk contribs 122,384 bytes −201 Only one copy of the canonical Goldberg citation is needed. undo
curprev 17:0817:08, 9 June 2025 Artoria2e5 talk contribs 122,585 bytes +3 →History: ~ undo
curprev 17:0817:08, 9 June 2025 Artoria2e5 talk contribs 122,582 bytes +518 →History: ~ undo

curprev 10:0110:01, 5 April 2025 Vincent Lefèvre talk contribs 121,610 bytes −29 Undid revision 1283908313 by Dominic3203 (talk) This was correct. undo Tag: Undo

curprev 11:3711:37, 4 April 2025 Dominic3203 talk contribs 121,639 bytes +29 →top undo Tags: Reverted Mobile edit Mobile app edit Android app edit App full source

curprev 17:5517:55, 3 April 2025 MrSwedishMeatballs talk contribs 121,610 bytes 0 →Other notable floating-point formats undo Tags: Mobile edit Mobile web edit Advanced mobile edit
curprev 17:5117:51, 3 April 2025 MrSwedishMeatballs talk contribs 121,610 bytes +1 →History undo Tags: Mobile edit Mobile web edit Advanced mobile edit

curprev 21:2021:20, 26 March 2025 MrSwedishMeatballs talk contribs 121,299 bytes +32 →Representable numbers, conversion and rounding undo Tags: Mobile edit Mobile web edit Advanced mobile edit
curprev 21:1521:15, 26 March 2025 MrSwedishMeatballs talk contribs 121,267 bytes +114 →Other notable floating-point formats undo Tags: Mobile edit Mobile web edit Advanced mobile edit

curprev 08:4608:46, 12 March 2025 Johnuniq talk contribs m 121,153 bytes +5 Reverted edit by 154.73.27.28 (talk) to last version by Vincent Lefèvre undo Tag: Rollback
curprev 08:2908:29, 12 March 2025 154.73.27.28 talk 121,148 bytes −5 →Floating-point numbers undo Tag: Reverted

curprev 13:2813:28, 11 March 2025 Vincent Lefèvre talk contribs m 121,153 bytes 0 →Internal representation: updated "x86 extended precision" link due to change in Special:Diff/1258191731 undo

curprev 12:2812:28, 26 February 2025 Cedar101 talk contribs m 121,153 bytes +8 →Minimizing the effect of accuracy problems: {{val}} undo

curprev 01:5601:56, 29 January 2025 Fgnievinski talk contribs 121,145 bytes +6 No edit summary undo

curprev 23:2823:28, 28 January 2025 Vincent Lefèvre talk contribs 121,139 bytes 0 Undid revision 1272486019 by Fgnievinski (talk) dashes inside sentences are completely unclear (not standard typography). undo Tag: Undo
curprev 21:3421:34, 28 January 2025 Fgnievinski talk contribs 121,139 bytes 0 →top undo Tag: Reverted

curprev 18:2718:27, 24 January 2025 Jacobolus talk contribs m 121,139 bytes −41 link should be to radix not base (exponentiation). also directly link to power of 10 undo

curprev 17:5617:56, 11 January 2025 Vincent Lefèvre talk contribs 121,180 bytes +22 →See also: updated an article title undo
curprev 15:0815:08, 11 January 2025 Scs talk contribs 121,158 bytes +85 →See also: +SANE undo

Floating-point arithmetic: Revision history

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