stillwater-sc / universal / 26360409851
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feat(ereal): refactor math/constants/ tests to standard pattern (#949) (#972)

Bring both files in elastic/ereal/math/constants/ up to the standard
regression framework (MANUAL_TESTING + REGRESSION_LEVEL guards +
ReportTestSuiteHeader/ReportTestResult/ReportTestSuiteResults, anonymous-
namespace Verify* functions, reportTestCases-gated output).

reference_constants.cpp:
- Wrap the qd cross-checks into VerifyReferenceConstants(reportTestCases);
  the parse/compare helpers now take reportTestCases and emit standard
  "    FAIL ..." lines instead of unconditional std::cerr.
- Group checks (pi/e/phi/roots/logs/erf) and fold the as-double sanity
  checks into a check_double helper. Validation logic unchanged (80-digit
  truncated parse vs the 4-component qd expansion, per #913).

constant_generation.cpp (demo -> regression test):
- Keep the generators (Machin pi, Taylor e, Newton-Raphson sqrt, artanh
  ln2) but strip all std::cout narration, the qd-table printing, the
  console_utf8 dependency, and every non-ASCII character (pi/sqrt/~=/*/^2).
- Add a priest_nonoverlap() predicate (|e[i+1]| <= ulp(e[i])/2, no interior
  zeros) and VerifyConstantGeneration(reportTestCases) that checks each
  generated constant against (1) its known double and (2) the non-overlap
  invariant, plus the algebraic round-trip identities.

Verified both targets build and pass on gcc-13 and clang-18.

Relates to #944
Resolves #949

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

47315 of 56349 relevant lines covered (83.97%)

5377705.79 hits per line

Coverage Regressions

Lines Coverage ∆ File
8
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 -0.47% include/sw/universal/number/cfloat/cfloat_impl.hpp
3
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 0.0% include/sw/universal/number/posit1/specialized/posit_16_1.hpp
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 -0.55% include/sw/universal/number/posito/posito_impl.hpp
Jobs
ID Job ID Ran Files Coverage
1 26360409851.1 657
83.97
 GitHub Action Run
Source Files on build 26360409851