feat: add C implementation for `@stdlib/stats/base/dists/lognormal/logcdf` #4716

saurabhraghuvanshii · 2025-01-12T10:31:19Z

Resolves #3750 .

Description

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This pull request:

Add C implementation for @stdlib/stats/base/dists/lognormal/logcdf

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This pull request:

resolves [RFC]: Add C implementation for @stdlib/stats/base/dists/lognormal/logcdf #3750

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No.

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test case failed , I try multiple things.

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saurabhraghuvanshii · 2025-01-12T10:54:52Z

some errors are showing in readme section, And I don't know to tackle with that, I need help and review and Tests are failed as I done every type of possible solution by my side .

saurabhraghuvanshii · 2025-01-12T13:48:37Z

@Planeshifter @kgryte review this , I have some doubt with this.

Neerajpathak07 · 2025-01-12T17:22:27Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/src/main.c

+* double y = stdlib_base_lognormal_logcdf( 2.0, 0.0, 1.0 );
+* // returns ~-0.2799
+*/
+double stdlib_base_dists_lognormal_logcdf( const double x, const double mu, const double sigma ) {


@saurabhraghuvanshii The test cases are throwing errors because your implementation for main.c file does not resonate with the lib/main.js
According to the lib/main.js you'll be needing C implementations for nlogcdf

means return NINF / ln(x), if yes then how import ln it show there is no directory

Neerajpathak07 · 2025-01-12T17:24:36Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/src/main.c

+		stdlib_base_is_nan( sigma ) ||
+		sigma <= 0.0
+	) {
+		return 0.0 / 0.0; // NaN


it should be returning NINF when true and

ln(x)

while false

`#include "stdlib/stats/base/dists/lognormal/logcdf.h"
#include "stdlib/math/base/special/ln.h"
#include "stdlib/constants/float64/ninf.h"

/**

Returns the logcdf for a lognormal distribution with mean mu and standard deviation sigma.

@param x input value

@param mu mean

@param sigma standard deviation

@return logcdf

@example

double y = stdlib_base_lognormal_logcdf( 2.0, 0.0, 1.0 );

// returns ~-0.2799
*/
double stdlib_base_dists_lognormal_logcdf( const double x, const double mu, const double sigma ) {
double lx = ( x <= 0.0 ) ? ninf : ln( x );
return nlogcdf( lx, mu, sigma );
}
`
error on building

fatal error: stdlib/math/base/special/ln.h: No such file or directory

did you add those header files in manifest.json also that's not how you write ninf it should be STDLIB_CONSTANT_FLOAT64_NINF

Similarly instead of ln(x) write stdlib_base_ln(x)
same goes for nlogcdf

same error happen

can you go through files annd check why all this happens

I am comiting with new changes check it .

now you can check,

saurabhraghuvanshii · 2025-01-12T22:38:51Z

I have to clean up , I don't how all these commit comes from

--- type: pre_push_report description: Results of running various checks prior to pushing changes. report: - task: run_javascript_examples status: na - task: run_c_examples status: na - task: run_cpp_examples status: na - task: run_javascript_readme_examples status: na - task: run_c_benchmarks status: na - task: run_cpp_benchmarks status: na - task: run_fortran_benchmarks status: na - task: run_javascript_benchmarks status: na - task: run_julia_benchmarks status: na - task: run_python_benchmarks status: na - task: run_r_benchmarks status: na - task: run_javascript_tests status: na --- --- type: pre_push_report description: Results of running various checks prior to pushing changes. report: - task: run_javascript_examples status: na - task: run_c_examples status: na - task: run_cpp_examples status: na - task: run_javascript_readme_examples status: na - task: run_c_benchmarks status: na - task: run_cpp_benchmarks status: na - task: run_fortran_benchmarks status: na - task: run_javascript_benchmarks status: na - task: run_julia_benchmarks status: na - task: run_python_benchmarks status: na - task: run_r_benchmarks status: na - task: run_javascript_tests status: na --- --- type: pre_push_report description: Results of running various checks prior to pushing changes. report: - task: run_javascript_examples status: na - task: run_c_examples status: na - task: run_cpp_examples status: na - task: run_javascript_readme_examples status: na - task: run_c_benchmarks status: na - task: run_cpp_benchmarks status: na - task: run_fortran_benchmarks status: na - task: run_javascript_benchmarks status: na - task: run_julia_benchmarks status: na - task: run_python_benchmarks status: na - task: run_r_benchmarks status: na - task: run_javascript_tests status: na --- --- type: pre_push_report description: Results of running various checks prior to pushing changes. report: - task: run_javascript_examples status: na - task: run_c_examples status: na - task: run_cpp_examples status: na - task: run_javascript_readme_examples status: na - task: run_c_benchmarks status: na - task: run_cpp_benchmarks status: na - task: run_fortran_benchmarks status: na - task: run_javascript_benchmarks status: na - task: run_julia_benchmarks status: na - task: run_python_benchmarks status: na - task: run_r_benchmarks status: na - task: run_javascript_tests status: na ---

--- type: pre_push_report description: Results of running various checks prior to pushing changes. report: - task: run_javascript_examples status: passed - task: run_c_examples status: na - task: run_cpp_examples status: na - task: run_javascript_readme_examples status: passed - task: run_c_benchmarks status: na - task: run_cpp_benchmarks status: na - task: run_fortran_benchmarks status: na - task: run_javascript_benchmarks status: passed - task: run_julia_benchmarks status: na - task: run_python_benchmarks status: na - task: run_r_benchmarks status: na - task: run_javascript_tests status: passed ---

Neerajpathak07 · 2025-01-13T07:21:13Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/manifest.json

+        "dependencies": [
+          "@stdlib/math/base/napi/binary",
+          "@stdlib/math/base/assert/is-nan",
+          "@stdlib/math/base/special/exp"


remove is-nan and exp and add the header files for ln and NINF

Neerajpathak07 · 2025-01-13T07:22:28Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/manifest.json

+          "@stdlib/math/base/special/exp",
+          "@stdlib/math/base/special/asin",
+          "@stdlib/math/base/special/sqrt",
+          "@stdlib/constants/float64/pi"


you'll have to remove all of these as it has not been used anywhere instead add the files suggested above.

Neerajpathak07 · 2025-01-13T07:26:18Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/src/main.c

+#include "stdlib/stats/base/dists/lognormal/logcdf.h"
+#include "stdlib/math/base/special/ln.h"
+#include "stdlib/constants/float64/ninf.h"
+


need to add #include "stdlib/stats/base/dists/normal/logcdf.h" in order to reference stdlib_base_dists_normal_logcdf
But stdlib/stats/base/dists/normal/logcdf does not have C implementation so this PR will have to wait till we have that.
You can go ahead and draft this PR for the time being

Neerajpathak07 · 2025-01-13T07:27:39Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/src/main.c

+*/
+double stdlib_base_dists_lognormal_logcdf( const double x, const double mu, const double sigma ) {
+	double lx = ( x <= 0.0 ) ? STDLIB_CONSTANT_FLOAT64_NINF : stdlib_base_ln( x );
+	return stdlib_base_nlogcdf( lx, mu, sigma );


This reference is incorrect it should be stdlib_base_dists_normal_logcdf as it comes from stats/base/dists/normal/logcdf

but we implement for stats/base/dists/lognormal/logcdf

I'm sorry I didn't understand your point

sorry, I take it wrong, for now I am leaving this pr . in future see

Though I would suggest you to draft this PR for now

today I try once more and change in manifest from binary to ternary so old error no showing new error are code: 'MODULE_NOT_FOUND', requireStack: [ '/home/saurabh/Gsoc/stdlib-gs/lib/node_modules/@stdlib/utils/library-manifest/lib/main.js', '/home/saurabh/Gsoc/stdlib-gs/lib/node_modules/@stdlib/utils/library-manifest/lib/index.js', '/home/saurabh/Gsoc/stdlib-gs/lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/[eval]' ] }

Neerajpathak07 · 2025-01-15T09:05:58Z

lib/node_modules/@stdlib/math/base/special/ln/manifest.json

      "libraries": [],
      "libpath": [],
      "dependencies": [
-        "@stdlib/math/base/napi/unary",


There is no need to make these changes in the manifest.json of math/base/special/ln,

there is nothing show like this in manifest.json of math/base/special/ln in repo

What I meant was that there was no need to change the block of code in math/base/special/ln so it will be good to revert it back.

It is depends on base/dists/normal/logcdf , which is not implement at that moment.

Neerajpathak07 · 2025-01-15T09:07:20Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/manifest.json

+        "libpath": [],
+        "dependencies": [
+          "@stdlib/math/base/napi/binary",
+          "@stdlib/math/base/assert/is-nan",


Suggested change

"@stdlib/math/base/assert/is-nan",

"@stdlib/math/base/special/ln",

This is what I meant by adding the header file for manifest.json

Neerajpathak07 · 2025-01-15T09:09:07Z

lib/node_modules/@stdlib/stats/base/dists/lognormal/logcdf/manifest.json

+        "dependencies": [
+          "@stdlib/math/base/napi/binary",
+          "@stdlib/math/base/assert/is-nan",
+          "@stdlib/math/base/special/exp"


Suggested change

"@stdlib/math/base/special/exp"

"@stdlib/constants/float64/ninf"

saurabhraghuvanshii · 2025-05-13T20:10:01Z

closing, outdated and merge conflicts

stdlib-bot added Statistics Issue or pull request related to statistical functionality. Needs Review A pull request which needs code review. labels Jan 12, 2025

Neerajpathak07 reviewed Jan 12, 2025

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saurabhraghuvanshii added 3 commits January 13, 2025 12:33

feat: add C implementation for base/dists/lognormal/logcdf

469aa3a

saurabhraghuvanshii force-pushed the lognormal-logcdf branch from 2bfa5ac to e025c63 Compare January 13, 2025 07:13

Neerajpathak07 reviewed Jan 13, 2025

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saurabhraghuvanshii marked this pull request as draft January 13, 2025 12:46

stdlib-bot removed the Needs Review A pull request which needs code review. label Jan 13, 2025

Neerajpathak07 reviewed Jan 15, 2025

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saurabhraghuvanshii closed this May 13, 2025

saurabhraghuvanshii deleted the lognormal-logcdf branch May 13, 2025 20:10

stdlib-bot added the Good First PR A pull request resolving a Good First Issue. label May 13, 2025

	"@stdlib/math/base/assert/is-nan",
	"@stdlib/math/base/special/ln",

	"@stdlib/math/base/special/exp"
	"@stdlib/constants/float64/ninf"

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feat: add C implementation for @stdlib/stats/base/dists/lognormal/logcdf #4716

feat: add C implementation for @stdlib/stats/base/dists/lognormal/logcdf #4716

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saurabhraghuvanshii commented Jan 12, 2025

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feat: add C implementation for `@stdlib/stats/base/dists/lognormal/logcdf` #4716

feat: add C implementation for `@stdlib/stats/base/dists/lognormal/logcdf` #4716

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