Fix benchmark logic as per issue #5862

[akash8843]

Resolves #{{TODO: add issue number}}.

Description

What is the purpose of this pull request?

This pull request:

• This pull request fixes the benchmark logic for the Binet function in the C implementation. The previous logic had inconsistencies, which I have corrected as per the discussion in issue Address commit comments (commit 9b2d78d) #5862

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves #{{Address commit comments (commit 9b2d78d) #5862}}

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No.

Other

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Coverage Report

Package	Statements	Branches	Functions	Lines
math/base/special/binet	$250/250$ $+100.00\mathrm{\%}$	$9/9$ $+100.00\mathrm{\%}$	$2/2$ $+100.00\mathrm{\%}$	$250/250$ $+100.00\mathrm{\%}$

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

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