Files
el/lang/runtime
bigmerge edafd8cce8
El SDK CI - dev / build-and-test (pull_request) Failing after 10m8s
runtime: math_log is base-10, not natural log
el_val_t math_log(el_val_t f) { return el_from_float(log(el_to_float(f))); }
    el_val_t math_ln(el_val_t f)  { return el_from_float(log(el_to_float(f))); }

Both were natural log, so math_log and math_ln were the same function.
log10(100) returned 4.605 instead of 2.

Three sources already agreed it should be base-10 and were being contradicted
by this one line:
  - runtime/math.el:55  "// math_log — base-10 logarithm."
  - el_seed.c:1278      __log_f -> log10()  (the path math.el actually calls)
  - tests/native/test_math.el:133  asserts log10(100) == 2

FOUND BY THE NEW TEST FRAMEWORK ON ITS FIRST RUN (el #133). The assertion had
been sitting in the suite the whole time; nothing could report it. The old
harness printed "N passed, M failed" with no per-test detail, and half the
suites were not compiling at all — so a failing assertion in a suite nobody
could run was indistinguishable from no failure.

That is the entire argument for the framework, demonstrated on day one: this is
not a bug the framework introduced, it is a bug the framework made VISIBLE.

Verified: tests/native/test_math.el goes 12/13 -> 13/13, math-log passing.
2026-08-15 21:33:20 -05:00
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