Tridiagonal matrix algorithm: Revision history

8 April 2024

• curprev 21:0021:00, 8 April 2024 169.231.25.141 talk 20,400 bytes +33 The previous code wouldn't have run. You can see this because the loop is from ix = 1 to X-1 inclusive, and accesses c[ix], but c only has elements from 0 to X-2. This causes an error on the ix = X-1 iteration, however, note that scratch[X-1] is never used in the computation, so we can simply only execute the line when ix is less than X-1. undo

19 January 2024

• curprev 23:3023:30, 19 January 2024 2602:61:71b4:1202:4cd9:9e58:ade6:de5a talk 20,367 bytes +598 →Variants: replace C-like pseudocode that counts from 1 with C that counts from zero, and does not divide in the back substitution undo
• curprev 21:4221:42, 19 January 2024 2602:61:71b4:1202:4cd9:9e58:ade6:de5a talk 19,769 bytes +60 replaced bitrotted comment undo
• curprev 21:4021:40, 19 January 2024 2602:61:71b4:1202:4cd9:9e58:ade6:de5a talk 19,709 bytes +1,052 →Variants: replace C-like pseudocode with actual C that indexes from zero, and does not divide in the back substitution undo
• curprev 19:1119:11, 19 January 2024 2602:61:71b4:1202:5524:ce74:52a9:84c talk 18,657 bytes +854 →Method: replace VB script example with a cleaned up C based example from the article history, without the expensive division in the back substitution undo
• curprev 16:2916:29, 19 January 2024 2602:61:71b4:1202:5524:ce74:52a9:84c talk 17,803 bytes +284 →Variants: whitespace for readability undo
• curprev 15:0015:00, 19 January 2024 2602:61:71b4:1202:5524:ce74:52a9:84c talk 17,519 bytes −216 →Variants: remove struct from example, which would force n to be known at compile time undo
• curprev 14:5714:57, 19 January 2024 2602:61:71b4:1202:5524:ce74:52a9:84c talk 17,735 bytes −6 →Variants undo

1 November 2023

• curprev 01:5901:59, 1 November 2023 Rickinasia talk contribs m 17,741 bytes +41 Internal link undo

2 October 2023

• curprev 15:2415:24, 2 October 2023 129.16.76.237 talk 17,700 bytes 0 fix code standard undo

10 August 2023

• curprev 04:3804:38, 10 August 2023 Citation bot talk contribs 17,700 bytes +33 Add: doi, authors 1-1. Removed parameters. Some additions/deletions were parameter name changes. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | #UCB_webform 365/990 undo

30 June 2023

• curprev 00:1400:14, 30 June 2023 Cedar101 talk contribs 17,667 bytes +6 →Method: fix syntaxhighlight error undo

22 February 2023

• curprev 15:1315:13, 22 February 2023 163.118.184.137 talk 17,661 bytes +22 →Variants: The listing does not make use of C++ constructs, is valid C undo
• curprev 15:1115:11, 22 February 2023 163.118.184.137 talk 17,639 bytes −2 →Variants: Dev-C++ is an IDE, unrelated to the language undo

19 October 2022

• curprev 12:5812:58, 19 October 2022 Hellacioussatyr talk contribs 17,641 bytes +104 No edit summary undo Tag: 2017 wikitext editor

15 September 2022

• curprev 11:0711:07, 15 September 2022 D.Lazard talk contribs 17,537 bytes −36 WP:SD40 undo Tag: Shortdesc helper
• curprev 09:0509:05, 15 September 2022 Qwertyxp2000 talk contribs 17,573 bytes +99 Adding short description: "Variant of Gaussian elimination for solving tridiagonal systems of equations" undo Tag: Shortdesc helper

24 June 2022

• curprev 13:1913:19, 24 June 2022 Mporterp talk contribs 17,474 bytes 0 In the periodic boundary section, B^-1u is simplified to y, but it should actually be q. (y is B^-1d in the formula above this line). As is, the formula and example code give the wrong results. undo

28 May 2022

• curprev 06:0406:04, 28 May 2022 WikiCleanerBot talk contribs m 17,474 bytes 0 v2.04b - Bot T20 CW#61 - Fix errors for CW project (Reference before punctuation) undo Tag: WPCleaner

27 May 2022

• curprev 08:3508:35, 27 May 2022 GiuliaLupi talk contribs 17,474 bytes +197 →Variants undo Tag: Visual edit

25 May 2022

• curprev 14:5114:51, 25 May 2022 147.175.31.29 talk 17,277 bytes 0 →Variants undo Tag: Visual edit
• curprev 13:2913:29, 25 May 2022 147.175.31.29 talk 17,277 bytes +6,488 →Variants: Two different methods to solve "almost" tri-diagonal systems of equations. Dev-C++ implementation of the two methods undo Tag: Visual edit

6 April 2022

• curprev 12:3712:37, 6 April 2022 157.193.2.238 talk 10,789 bytes −2 →Derivation: Removed a plus sign at the beginning of the line undo Tag: Visual edit

23 November 2021

• curprev 23:2923:29, 23 November 2021 Citation bot talk contribs 10,791 bytes +30 Alter: template type. Add: doi. | Use this bot. Report bugs. | Suggested by AManWithNoPlan | #UCB_webform 156/280 undo

11 July 2021

• curprev 21:0021:00, 11 July 2021 Mikhail Ryazanov talk contribs m 10,761 bytes +15 →References: punct. undo
• curprev 20:5820:58, 11 July 2021 Mikhail Ryazanov talk contribs m 10,746 bytes −44 →Method: punct., fmt., style undo
• curprev 20:5220:52, 11 July 2021 Mikhail Ryazanov talk contribs m 10,790 bytes −39 →top: fmt. undo

1 June 2021

• curprev 08:3808:38, 1 June 2021 InverseHypercube talk contribs 10,829 bytes +46 added Category:Articles with example BASIC code using HotCat undo

28 May 2021

• curprev 22:4622:46, 28 May 2021 RainerBlome talk contribs m 10,783 bytes +2 →Variants: Replaced hyphen in Sherman-Morrison formula with en-dash -> Sherman–Morrison formula undo

11 November 2020

• curprev 10:1310:13, 11 November 2020 D.Lazard talk contribs 10,781 bytes −185 Reverted 2 edits by HamidrezanorouziAUT (talk): WP:ELNO: no need to mention a non-notable implementation when thousands are available undo Tags: Twinkle Undo

10 November 2020

• curprev 22:0122:01, 10 November 2020 HamidrezanorouziAUT talk contribs m 10,966 bytes +12 No edit summary undo Tags: Reverted Visual edit
• curprev 22:0022:00, 10 November 2020 HamidrezanorouziAUT talk contribs m 10,954 bytes +173 added links to matlab and python implementations. undo Tags: Reverted Visual edit

20 October 2020

• curprev 07:5007:50, 20 October 2020 Monkbot talk contribs m 10,781 bytes +2 →References: Task 17 (BRFA trial): replace deprecated: |last-author-amp= (1× replaced; usage: 1 of 6); undo Tag: AWB

18 September 2020

• curprev 08:4408:44, 18 September 2020 HerrHartmuth talk contribs 10,779 bytes −35 →Derivation: aligned equations undo Tag: Visual edit
• curprev 08:4308:43, 18 September 2020 HerrHartmuth talk contribs 10,814 bytes +48 →Variants: aligned equations undo Tag: Visual edit
• curprev 08:3508:35, 18 September 2020 HerrHartmuth talk contribs 10,766 bytes +96 →Derivation: aligned equations undo Tag: Visual edit

11 May 2020

• curprev 18:5518:55, 11 May 2020 DannyS712 bot talk contribs m 10,670 bytes +18 Task 70: Update syntaxhighlight tags - remove use of deprecated <source> tags undo Tag: AWB

6 May 2020

• curprev 05:0505:05, 6 May 2020 67.165.250.221 talk 10,652 bytes −19 Clear up comments and clean up algorithm undo

2 April 2020

• curprev 02:4902:49, 2 April 2020 Citation bot talk contribs 10,671 bytes −166 Alter: pages, template type. Add: location. Removed parameters. Formatted dashes. Some additions/deletions were actually parameter name changes. | You can use this bot yourself. Report bugs here. | Activated by AManWithNoPlan | All pages linked from User:AManWithNoPlan/sandbox2 | via #UCB_webform_linked undo

27 February 2020

• curprev 19:4419:44, 27 February 2020 AnomieBOT talk contribs m 10,837 bytes +38 Dating maintenance tags: {{Opinion}} {{Clarify}} undo
• curprev 19:2419:24, 27 February 2020 D.Lazard talk contribs 10,799 bytes +11 →Method: "much simpler" is a dubious opinion undo
• curprev 19:1019:10, 27 February 2020 D.Lazard talk contribs 10,788 bytes +75 →Method: {{clarify}} + minor ce undo
• curprev 18:2818:28, 27 February 2020 128.115.190.36 talk 10,713 bytes −181 →Derivation undo
• curprev 18:1218:12, 27 February 2020 128.115.190.36 talk 10,894 bytes −9 →Derivation undo
• curprev 18:1118:11, 27 February 2020 128.115.190.36 talk 10,903 bytes −1 →Derivation undo
• curprev 18:1018:10, 27 February 2020 128.115.190.36 talk 10,904 bytes −226 →Derivation undo
• curprev 18:0618:06, 27 February 2020 128.115.190.36 talk 11,130 bytes +15 →Derivation undo
• curprev 18:0318:03, 27 February 2020 128.115.190.36 talk 11,115 bytes +14 →Derivation undo

17 December 2019

• curprev 15:3115:31, 17 December 2019 Frap talk contribs 11,101 bytes +57 →Method: syntax highlight undo

18 November 2019

• curprev 22:4922:49, 18 November 2019 InternetArchiveBot talk contribs 11,044 bytes +81 Bluelink 1 book for verifiability.) #IABot (v2.0) (GreenC bot undo