[feat/fix/docs]: Improved on conversion code , length variable , asserts added

[lazy-dude]

Description of Change

References

Checklist

• [x] Added description of change
• [x] Added file name matches File name guidelines
• [x] Added tests and example, test must pass
• [x] Relevant documentation/comments is changed or added
• [x] PR title follows semantic commit guidelines
• [x] Search previous suggestions before making a new one, as yours may be a duplicate.
• [x] I acknowledge that all my contributions will be made under the project's license.

Notes:

[lazy-dude]

I changed the code. Added tests and basic documentation. How should I send the file ?

[lazy-dude]

I pushed the commit.