Rename parameter for clarity

[mborland]

Closes: #1092

[cppalliance-bot]

An automated preview of the documentation is available at https://1147.decimal.prtest3.cppalliance.org/libs/decimal/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2025-10-20 14:29:06 UTC

[codecov]

Codecov Report

❌ Patch coverage is 85.18519% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 99.4%. Comparing base (7cfb824) to head (bd778a3).
⚠️ Report is 11 commits behind head on develop.

Files with missing lines	Patch %	Lines
include/boost/decimal/decimal32_t.hpp	66.7%	2 Missing ⚠️
include/boost/decimal/decimal64_t.hpp	66.7%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #1147   +/-   ##
=======================================
  Coverage     99.4%   99.4%           
=======================================
  Files          252     252           
  Lines        17164   17164           
  Branches      1866    1866           
=======================================
  Hits         17048   17048           
  Misses         116     116           

Files with missing lines	Coverage Δ
include/boost/decimal/decimal128_t.hpp	98.6% <100.0%> (ø)
include/boost/decimal/decimal_fast128_t.hpp	96.0% <100.0%> (ø)
include/boost/decimal/decimal_fast32_t.hpp	100.0% <100.0%> (ø)
include/boost/decimal/decimal_fast64_t.hpp	100.0% <100.0%> (ø)
include/boost/decimal/decimal32_t.hpp	96.8% <66.7%> (ø)
include/boost/decimal/decimal64_t.hpp	96.8% <66.7%> (ø)

... and 1 file with indirect coverage changes

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