stillwater-sc / universal / 28473943872

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Commit Message

feat(efloat): implement mathematical exponential library (#1130)

* feat(efloat): consolidate and implement mathematical exponential library (#1119)

Consolidate all exponential functions (exp, exp2, exp10, expm1) into a single, clean
math/exponent.hpp header file.

Prune redundant exp2, exp10, and expm1 declarations from math/pow.hpp to maintain
proper structural namespace layout.

Create exponent.cpp inside elastic/efloat/math/ to verify all exponential functions
against zero-inputs, infinities, NaNs, and small Taylor range cancellation protections.

Resolves #1119
Relates to parent Issue #1092, Epic #1101

* fix(efloat): resolve CodeRabbit review comments on exponent library

Implement the check 'if (term.iszero()) break;' inside the expm1() Taylor series
loop in math/exponent.hpp. This guarantees that when the term underflows to
zero, the loop short-circuits safely, preventing infinite spins and ensuring
clean, standard-compliant convergence.

Resolves #1119, PR #1130

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8 existing lines in 1 file now uncovered.

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