rajamesandClaude Opus 5.5
5ac52f19d6
DECOMPOSITION.md 5.26 makes Q.+ and Q.- the D+ and D- words. They are checked against v3's q48_add/q48_sub (uint64_t a + b, a - b, wrapping) on every pair of 15 edge Q values (0, ulp, 0.5, 1.0, 1.5, -1.0, -ulp, values across the 32-bit seam, Q max and min, +-12345.0) and 20000 pseudo-random pairs, 2682 of which overflow Q48.16. - 32-bit cells: bit-for-bit v3's result, overflow wrap included. - 64-bit cells, with a Q value as a sign-extended double: the low cell is v3's result; on overflow the high cell holds the true carry where v3 wraps. Whether a Q value is one cell or two on a 64-bit node is not ruled; recorded as open in 5.26. 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.