Add tests for IEEE 754-2019 compliance

## Checklist

> Please ensure the following tasks are completed before filing a bug report.

- [x] Read and understood the [Code of Conduct][code-of-conduct].
- [x] Searched for existing issues and pull requests.

## Description

> Description of the issue.

To ensure conformance of `@stdlib/math/base/special/*` functions with [IEEE 754-2019](http://www.dsc.ufcg.edu.br/~cnum/modulos/Modulo2/IEEE754_2008.pdf), we should explicitly include compliance tests in the various test suites of the mathematical functions (e.g., `pow`, `exp`, etc) present in the standard. The IEEE 754 [standard](http://www.dsc.ufcg.edu.br/~cnum/modulos/Modulo2/IEEE754_2008.pdf) explicitly states behavior for various edge cases for each mathematical function. By including these tests, we can ensure that the underlying implementations, should they change, always remain IEEE 754 compliant.

## Related Issues

> Does this issue have any related issues?

None.

## Questions

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No.

## Other

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No.

[code-of-conduct]: https://github.com/stdlib-js/stdlib/blob/develop/CODE_OF_CONDUCT.md

Start by reading the test suites for functions under @stdlib/math/base/special/*, using pow and exp as examples, and consult the linked IEEE 754-2019 standard for required edge-case behavior. Add explicit compliance tests across the relevant mathematical functions and run their test suites to confirm the implementations remain compliant.

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