feat: add constants/float16/fourth-root-eps

[aryan7071]

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Description

What is the purpose of this pull request?

This pull request:

• add constants/float16/fourth-root-eps

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: tracking issue for missing float16 constants #9061

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Coverage Report

Package	Statements	Branches	Functions	Lines
constants/float16/fourth-root-eps	$\color{green}53/53$ $\color{green}+100.00%$	$\color{green}1/1$ $\color{green}+100.00%$	$\color{green}0/0$ $\color{green}+100.00%$	$\color{green}53/53$ $\color{green}+100.00%$

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

[Neerajpathak07]

Suggested change

	[Fourth root][nth-root] of [single-precision floating-point epsilon][@stdlib/constants/float16/eps].
	[Fourth root][nth-root] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].

[Neerajpathak07]

Suggested change

	var pow = require( '@stdlib/math/base/special/pow' );
	var sqrtf = require( '@stdlib/math/base/special/sqrtf' );
	var pow = require( '@stdlib/math/base/special/pow' );
	var sqrt = require( '@stdlib/math/base/special/sqrt' );

you need to use the double-precision version for the test and then convert them to float16.

[Neerajpathak07]

This is incorrect sqrtf represents a float dtype and wrapping float64ToFloat16 around doesn't give out the half-precision value.

[Neerajpathak07]

You need to remove the C header files as stdlib_float16_t which cannot be readily supported in a macro as of now.

[Neerajpathak07]

@aryan7071 Left a few comments. Also, do double check if the return value fits the half-precision limit.

[Neerajpathak07]

Ohh turns out this package has been worked on in #9250.

[aryan7071]

Oh okay, @Neerajpathak07. In that case, I’ll close this for now. That PR is already 20 days old if it doesn’t move forward, I’d be happy to make the changes and commit them. Your call.