Replace most binary constant masks

[mborland]

Closes: #1205

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.9%. Comparing base (1def358) to head (2222b4a).
⚠️ Report is 17 commits behind head on develop.

Additional details and impacted files

@@            Coverage Diff            @@
##           develop   #1298     +/-   ##
=========================================
+ Coverage     98.9%   98.9%   +0.1%     
=========================================
  Files          270     270             
  Lines        17956   17956             
  Branches      1998    1998             
=========================================
+ Hits         17742   17745      +3     
+ Misses         214     211      -3     

Files with missing lines	Coverage Δ
include/boost/decimal/decimal128_t.hpp	96.8% <100.0%> (ø)
include/boost/decimal/decimal32_t.hpp	96.7% <ø> (ø)
include/boost/decimal/decimal64_t.hpp	95.3% <ø> (ø)
include/boost/decimal/decimal_fast128_t.hpp	95.2% <100.0%> (ø)
include/boost/decimal/dpd_conversion.hpp	99.2% <100.0%> (ø)

... and 2 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1def358...2222b4a. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.