ludic/docs/language/angle/angle-diff.md
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feat(types): Huge + Angle + Percent polish numeric types (#55)
Types phase 5 (polish). A splice-on-demand numeric runtime
(runtime/native/numeric.ludic, built on the inline Math.* trig) behind three
namespaces:

- Huge.* — idle big numbers (normalized mantissa x 10^exponent): from/add/
  sub/mul/neg/cmp/sign/mantissa/exp/str (scientific 1.23e45). Display-scale,
  not lockstep-exact (BigInt/Decimal for exactness).
- Angle.* — auto-wrapping radians: from_degrees/to_degrees/wrap/sin/cos/add/
  diff (shortest signed rotation)/lerp (shortest arc).
- Percent.* — clamped [0,1]: clamp/of/lerp/apply.

Remaining phase-5 items are already covered (duration=Duration.*,
rune=Unicode.*, i64=long) or need a type-checking pass (handle, typed name,
other sized ints) — tracked for later.

Wired: parser splice trigger (g_uses_numeric), emit_call dispatch, reseeded
seed, a self-asserting example (examples/library/numeric.ludic + feat_case),
per-symbol docs + inventory. All suites green incl. golden renders byte-
identical and the bootstrap fixpoint.

NOTE: fixed `const`s lower to raw-int-typed values (emit_call N_CONST), which
breaks fixed comparisons — the runtime uses inline fixed literals instead.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-08-31 19:04:37 +03:00

452 B

id name category kind tokens sig tip order ns member
angle-diff Angle.diff angle namespace-method Angle.diff Angle.diff(a, b) -> fixed Shortest signed rotation from a to b. 6 Angle diff

Returns the shortest signed rotation from a to b, in [-pi, pi) — positive to turn one way, negative the other.

program Demo {
  handler Step phase Update {
    let steer = Angle.diff(facing, target)
  }
}