feat: add math/base/special/roundbf

[Amansingh0807]

Resolves None

Description

What is the purpose of this pull request?

This pull request:

• This PR adds math/base/special/roundbf.

Related Issues

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This pull request has the following related issues:

• Resolves None

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/roundbf	$\color{red}198/202$ $\color{green}+0.00%$	$\color{red}22/24$ $\color{green}+0.00%$	$\color{green}2/2$ $\color{green}+0.00%$	$\color{red}198/202$ $\color{green}+0.00%$

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

[Planeshifter]

The type for b in the C documentation doesn't match the actual implementation. The C header and main.c use const float b, but the docs say int32_t.

Suggested change

	- **b**: `[in] int32_t` base.
	- **b**: `[in] float` base.

[Planeshifter]

Same issue here - the actual signature uses const float b, not const int32_t b.

Suggested change

	float stdlib_base_roundbf( const float x, const int32_t n, const int32_t b );
	float stdlib_base_roundbf( const float x, const int32_t n, const float b );

[Planeshifter]

The type should be float to match the actual function signature.

Suggested change

	const int32_t b[] = { 10, 10, 2, 2 };
	const float b[] = { 10.0f, 10.0f, 2.0f, 2.0f };

[Amansingh0807]

Hi @Planeshifter, Thankyou for caching up. I have updated the README to align with the corrected function signature to use const float b also the same was in the example.c
Ready for Re-review.