rajamesandClaude Opus 5.5
d948e0c1a3
D-10 (ruled 2026-10-02): a Q48.16 value is two cells at every cell width, so every Q word is the same double word on 32- and 64-bit nodes. Recorded in DECOMPOSITION.md section 3 and 5.26; the open note on the Q.+/Q.- row is resolved by it. Q.ABS and Q.NEG are the DABS and DNEGATE words. Checked against v3's q48_abs and 0 - q on the 15 edge Q values and 20000 pseudo-random values, at 32- and 64-bit cells, optimised and ASan+UBSan: - 32-bit cells: bit-for-bit v3, including v3's wrap of Q min to itself. - 64-bit cells: the low cell is v3's; the high cell is the true sign (so ABS and NEG of Q min give +2^63 rather than wrapping), per D-10. Breaking DNEGATE's carry fails Q.NEG, Q.ABS and Q.- checks. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
v4/
StarForth v4: the 32-instruction F18-derived core. The design lives in
docs/v4.0.0/JUSTIFICATION.md (why) and docs/v4.0.0/DECOMPOSITION.md
(every v3 word mapped to a v4 fate).
The first deliverable is the hosted C99 golden model (JUSTIFICATION.md §10,
step 1). It must pass POST and hold K≡1.0 with 32- and 64-bit cells on all
three host ISAs.
What exists so far is the single node: registers, circular stacks, memory, all
32 opcodes, and per-opcode and per-call-target heat. make -C v4 test builds
and runs the tests at both cell widths; make -C v4 sanitize repeats them
under ASan and UBSan. There is no compiler capsule, no POST and no K
measurement yet.