add truncate for explicit tangent

[pepijndevos]

No description provided.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.06% ⚠️

Comparison is base (3b4e59f) 55.09% compared to head (a39ef12) 55.03%.
Report is 1 commits behind head on main.

❗ Current head a39ef12 differs from pull request most recent head ee36daa. Consider uploading reports for the commit ee36daa to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #215      +/-   ##
==========================================
- Coverage   55.09%   55.03%   -0.06%     
==========================================
  Files          28       28              
  Lines        2797     2800       +3     
==========================================
  Hits         1541     1541              
- Misses       1256     1259       +3     

Files Changed	Coverage Δ
src/tangent.jl	51.12% <0.00%> (-1.18%)	⬇️

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[oxinabox]

This seems right to me, can we just add some unit tests?
like just directly calling the method.

[pepijndevos]

done