Orkuncakilkaya
bd6b12d2ea
Types phase 2 — the "money problem". A splice-on-demand bignum engine (runtime/native/bignum.ludic, self-contained, only intrinsics) exposed as two namespaces: - BigInt.* — arbitrary-precision integer (sign-magnitude, base-1e9 limbs): from/parse, add/sub/mul/pow, div/mod (by int), cmp/eq/is_zero, to_int, str. For idle counters and exact huge currencies that overflow a 32/64-bit int. - Decimal.* — exact base-10 fixed point (BigInt mantissa + decimal scale): from/parse, exact add/sub/mul, cmp/eq, scale/rescale (truncate), str. So 0.10 + 0.20 is exactly 0.30 — no binary rounding. Both exact => deterministic; no f32/f64. Wired: parser splice trigger (g_uses_bignum), emit_call dispatch, reseeded seed, a self-asserting example (examples/library/bignum.ludic + feat_case), and per-symbol docs + inventory. All suites green incl. golden renders byte-identical and the bootstrap fixpoint. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
22 lines
512 B
Markdown
22 lines
512 B
Markdown
---
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id: decimal-rescale
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name: Decimal.rescale
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category: decimal
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kind: namespace-method
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tokens: Decimal.rescale
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sig: Decimal.rescale(d, places) -> Decimal
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tip: Change precision (truncates toward zero).
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order: 9
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ns: Decimal
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member: rescale
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---
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Changes the number of fractional digits. Increasing precision is exact; decreasing it truncates toward zero — how you round a computed price down to whole cents.
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```ludic
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program Demo {
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handler Step phase Update {
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let cents = Decimal.rescale(raw, 2)
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}
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}
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```
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