feat: add `math/base/special/log1pf` #5803

0PrashantYadav0 · 2025-03-05T14:49:28Z

type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes. report:

task: lint_filenames status: passed
task: lint_editorconfig status: passed
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task: lint_javascript_cli status: na
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task: lint_typescript_declarations status: passed
task: lint_typescript_tests status: passed
task: lint_license_headers status: passed ---

Resolves None.

Description

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This pull request:

added base implementation for math/base/special/log1pf
added benchmark, example and test.
added docs and C-implementation.

Related Issues

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This pull request:

ref [RFC]: Add C implementations to base special math functions (tracking issue) #649

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Read, understood, and followed the contributing guidelines.

@stdlib-js/reviewers

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0PrashantYadav0 · 2025-03-05T14:50:43Z

/stdlib update-copyright-years

0PrashantYadav0 · 2025-03-05T14:51:20Z

@gunjjoshi @kgryte Please review this pr as it is important for other packages.

stdlib-bot · 2025-03-05T14:51:28Z

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/log1pf	$\color{red}380/393$ $color{green}+96.69%$	$\color{red}31/35$ $color{green}+88.57%$	$\color{green}3/3$ $color{green}+100.00%$	$\color{red}380/393$ $color{green}+96.69%$

The above coverage report was generated for the changes in this PR.

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lib/node_modules/@stdlib/math/base/special/log1pf/lib/main.js

Signed-off-by: Gunj Joshi <[email protected]>

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0PrashantYadav0 · 2025-03-06T06:09:18Z

@gunjjoshi I made the changes you asked for. Please review also i use freeBSD for my implementation along with the reference of log1p

gunjjoshi · 2025-03-07T05:15:29Z

@0PrashantYadav0 Thanks for working on this, but after commit 46d0f11, there doesn't seem to be any change in the implementation. You should be strictly following the freeBSD reference, rather than trying to port the double-precision netlib reference.

0PrashantYadav0 · 2025-03-07T12:12:35Z

@gunjjoshi I am not sure what you mean will you please explain this to me.

Neerajpathak07 · 2025-03-07T13:18:27Z

@0PrashantYadav0 Refer this msun implementation for log1pf

lib/node_modules/@stdlib/math/base/special/log1pf/src/main.c

0PrashantYadav0 · 2025-03-07T17:05:14Z

I tried to implement the freeBSD completely but i am not sure why i am getting wrong values as an output.

0PrashantYadav0 · 2025-03-08T08:06:18Z

@gunjjoshi I made few changes according to your previous comments. Please review them. Thank you.

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Planeshifter · 2025-03-16T20:23:45Z

⚠️ Tracking Issue Closure Warning ⚠️

I noticed your PR description contains closing keywords ("Resolves", "Closes", or "Fixes") referencing a "Tracking Issue".

Why this matters:
Tracking issues should typically remain open until all related sub-issues are completed. GitHub automatically closes issues with such closing keywords when the PR is merged.

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Use "Progresses:" or "Ref:" instead to reference the tracking issue without automatically closing it.

Thank you for your contribution to the project!

anandkaranubc · 2025-12-02T18:56:17Z

/stdlib merge

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lib/node_modules/@stdlib/math/base/special/log1pf/lib/main.js

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anandkaranubc · 2025-12-03T00:51:42Z

lib/node_modules/@stdlib/math/base/special/log1pf/src/main.c

+		// cppcheck-suppress knownConditionTrueFalse
+		if ( ( hx > 0 ) || ( hx <= SQRT2HALFM1 ) ) { // sqrt(2)/2- <= 1+x < sqrt(2)+
+			k = 0;
+			f = x;
+			hu = 1;
+		}
+	}


Adding the // cppcheck-suppress knownConditionTrueFalse comment because I think cppcheck raises a false positive in here.

I believe it's thinking of it as "If a number is positive or a if it's negative" but this check is more of whether the number lies outside of a given range.

reference: https://github.com/freebsd/freebsd-src/blob/adb4901ac9ae6c2ceb4194d139ed3176f6ed5e55/lib/msun/src/s_log1pf.c#L58-L59

A bit odd that cppcheck is flagging this.

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anandkaranubc

Thanks @0PrashantYadav0 for the valuable contribution! This will unlock a number of other single-precision packages.

lib/node_modules/@stdlib/math/base/special/log1pf/docs/repl.txt

Signed-off-by: Athan <[email protected]>

kgryte

LGTM.

PR-URL: stdlib-js#5803 Ref: stdlib-js#649 Co-authored-by: Athan Reines <[email protected]> Reviewed-by: Athan Reines <[email protected]> Co-authored-by: stdlib-bot <[email protected]> Co-authored-by: Gunj Joshi <[email protected]> Co-authored-by: Karan Anand <[email protected]> Reviewed-by: Gunj Joshi <[email protected]> Reviewed-by: Karan Anand <[email protected]>

stdlib-bot added Math Issue or pull request specific to math functionality. Needs Review A pull request which needs code review. labels Mar 5, 2025

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chore: update copyright years

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0PrashantYadav0 mentioned this pull request Mar 5, 2025

feat: add math/base/special/acoshf #5812

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Update lib/node_modules/@stdlib/math/base/special/log1pf/lib/main.js

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Signed-off-by: Gunj Joshi <[email protected]>

0PrashantYadav0 requested a review from gunjjoshi March 6, 2025 08:26

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kgryte requested a review from anandkaranubc November 14, 2025 18:51

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Merge remote-tracking branch 'upstream/develop' into math-log1pf

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anandkaranubc added 2 commits December 2, 2025 17:11

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style: adjust line wrapping

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feat: add math/base/special/log1pf #5803

feat: add math/base/special/log1pf #5803

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feat: add `math/base/special/log1pf` #5803

feat: add `math/base/special/log1pf` #5803

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