feat(stats): add C implementation for stats/base/dists/degenerate/mean

[anandkaranubc]

Resolves

#3540

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Description

Purpose of this pull request

This pull request:

• Adds a C implementation of the degenerate mean.
• Includes benchmarks for the C implementation.
• Provides examples demonstrating the usage of the degenerate mean in C.

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Related Issues

Does this pull request have any related issues?

This pull request:

• Resolves Issue #3540.

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Questions

Any questions for reviewers of this pull request?

No.

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Other Information

Any other relevant information?

No.

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Checklist

Please ensure the following tasks are completed before submitting this pull request:

• Read, understood, and followed the contributing guidelines.

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@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/degenerate/mean	$\color{green}153/153$ $\color{green}+100.00\%$	$\color{green}5/5$ $\color{green}+100.00\%$	$\color{green}2/2$ $\color{green}+100.00\%$	$\color{green}153/153$ $\color{green}+100.00\%$

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

[anandkaranubc]

Made the changes, taking feedback from #4593

[anandkaranubc]

/stdlib lint-autofix

[Planeshifter]

Thanks!

[Planeshifter]

Suggested change

	#include "stdlib/math/base/assert/is_nan.h"
	#include "stdlib/stats/base/dists/degenerate/mean.h"
	#include "stdlib/stats/base/dists/degenerate/mean.h"
	#include "stdlib/math/base/assert/is_nan.h"

[Planeshifter]

Suggested change

	* Returns the mean (expected value) of a degenerate distribution with constant value `mu`.
	*
	* @private
	* @param {number} mu - constant value of the distribution
	* @returns {number} mean
	* Returns the expected value of a degenerate distribution with constant value `mu`.
	*
	* @private
	* @param {number} mu - constant value of the distribution
	* @returns {number} expected value

[Planeshifter]

Suggested change

	/**
	* Returns the mean (expected value) of a degenerate distribution with constant value `mu`.
	*
	* @param mu constant value of the distribution
	* @return mean of the distribution
	*/
	/**
	* Returns the expected value of a degenerate distribution with constant value `mu`.
	*/