fix: handle end of the number correctly

[tdakkota]

No description provided.

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (5127e9c) compared to base (75ecdde).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 5127e9c differs from pull request most recent head 03c1e5e. Consider uploading reports for the commit 03c1e5e to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##              main       #70    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           38        39     +1     
  Lines         2840      3055   +215     
==========================================
+ Hits          2840      3055   +215     

Impacted Files	Coverage Δ
dec_float.go	100.00% <100.00%> (ø)
dec_float_big.go	100.00% <100.00%> (ø)
dec_int.gen.go	100.00% <100.00%> (ø)
num.go	100.00% <100.00%> (ø)

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