Arithmetic and comparisons lowered to raw Chez ops, so an operand outside
Chez's tower (BigDecimal) crashed with a raw condition, and Chez contagion
leaked: (* 1.0 0) gave exact 0 where the JVM gives 0.0, (* ##Inf 0) gave 0
instead of ##NaN, (/ 1 0) raised an untyped error.
One seam now (host/chez/seq.ss): call position emits jolt-n* macros with the
both-Chez-numbers fast path open-coded; value position folds through the same
binary ops. Anything outside the tower falls to per-op slow hooks that
java/bigdec.ss extends, so bigdec arithmetic works in every position (the old
static-only :bigdec typing limitation is gone). JVM rules patched into the
fast path: a double operand wins, an exact zero divisor throws
ArithmeticException while a double zero divisor yields Inf/NaN, quot/rem/mod
cover ratios and doubles, min/max return the original operand with NaN
winning, a nil operand is NPE and a non-number CCE, zero-arg -// throw
ArityException at runtime instead of failing expansion.
Also: with-precision now binds *math-context* and bigdec results round with
real RoundingMode semantics (UNNECESSARY throws; division rounds to precision
instead of throwing); rationalize goes through the shortest decimal print
like BigDecimal.valueOf (the identity stub is gone); ratios coerce to bigdec
like Numbers.toBigDecimal; min/max int-literal operands no longer coerce to
flonum in the numeric pass.
Perf neutral: fib and seq benches unchanged (the fast path is two type checks
the optimizer folds); hinted fl/fx paths untouched. 19 JVM-certified corpus
rows; cts baseline 5614->5730 pass, 192->88 errors, 84->79 baselined
namespaces.
are let-bound its template vars, so a var inside quote never substituted:
(are [x] (special-symbol? 'x) if def) tested the literal symbol x twice.
Rebuild are on clojure.template/do-template (postwalk substitution), the
same architecture as upstream, with the same arg-count check.
This un-aborts every suite namespace whose are rows need substitution:
cts baseline moves 5302->5614 pass, 236->192 errors, 88->84 baselined
namespaces. The newly-reachable assertions also surface real divergences
now baselined and filed (edn reader strictness, Boolean ctor).
jank-lang/clojure-test-suite (per-core-fn clojure.test suites shared across
Clojure dialects) joins the default gate as vendor/clojure-test-suite, run by
host/chez/cts.sh: one joltc process per test namespace (a hang or crash is
contained by a per-process timeout), through the test/chez/cts-app project and
its cts-run runner, parallel workers.
Gating is exact per namespace against test/chez/cts-known-failures.txt, like
certify's allowlist: a namespace doing worse than the baseline fails, and one
doing better also fails as stale until the baseline is updated in the same
change. JOLT_CTS_WRITE_BASELINE=1 regenerates it; JOLT_CTS_NS runs a subset
verbosely.
Current standing: 243 namespaces, 5302 assertions pass, 340 fail + 236 error
across 88 namespaces pinned in the baseline (dominant clusters: BigDecimal
arithmetic operands, derive/ancestors hierarchy, transients, special-symbol?,
clojure.string case fns, the accepted narrow-int and seq-type-model
divergences). Two consecutive full runs produce identical counts. Wired into
make ci; skips cleanly when the submodule isn't checked out.
