nx_coder_fidelity_gate.nx source
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1// nx_coder_fidelity_gate.nx -- L3b: MEASURED coder-weights bring-up (float ref vs 100%-integer
2// tower, same coder GGUF, greedy). The load-bearing L3b claim is NOT "bit-faithful to float"
3// (greedy argmax flips on near-ties and compounds -- expected) but: the coder weights LOAD and
4// GENERATE COHERENT code through the integer tower, the config is sound, and the integer tower is
5// deterministic by construction. Float-match is NOT the forge ground truth -- the compiler is.
6// Both runners wrote knowledge/forge/coder_gen_{f32,nf}.txt (2 lines: "GEN p1 ...text=[..]" /p2).
7// PASS on: both PRODUCED coherent output AND p2 text byte-exact (proves arch+config+tokenizer+
8// dequant all correct -- if eps/rope differed, p2 would also diverge) AND mutation negctl caught.
9// REPORT (not gated): p1 text exact? + p1 text longest-common-prefix (the honest divergence depth).
10// license_tier: ORIGINAL expect_exit: 0
11import "nx_forge_ctx.nx"
12import "nx_gate_verdict.nx"
13
14// extract the bytes between the FIRST "text=[" and the next "]" AFTER the k-th "GEN p" line.
15// on entry startoff = search start; returns payload length into out, sets *endoff past the "]".
16func cf_text_after(buf: *u8, n: i64, startoff: i64, out: *u8, endoff: *i64) -> i64 {
17 let key: *u8 = "text=[" as *u8
18 let kl: i64 = std_slen(key)
19 var i: i64 = startoff
20 var ts: i64 = 0 - 1
21 let stop: i64 = n - kl
22 while i <= stop {
23 var j: i64 = 0
24 var hit: i64 = 1
25 while j < kl {
26 let idx: i64 = i + j
27 let a: i64 = buf[idx] as i64
28 let b: i64 = key[j] as i64
29 if a != b { hit = 0; j = kl }
30 if a == b { j = j + 1 }
31 }
32 if hit == 1 { ts = i + kl; i = stop + 1 }
33 if hit == 0 { i = i + 1 }
34 }
35 if ts < 0 { endoff[0] = n; return 0 - 1 }
36 var o: i64 = 0
37 var p: i64 = ts
38 var go: i64 = 1
39 while go == 1 {
40 if p >= n { go = 0 }
41 if go == 1 {
42 let c: i64 = buf[p] as i64
43 if c == 93 { go = 0 }
44 if c != 93 { out[o] = c as u8; o = o + 1; p = p + 1 }
45 }
46 }
47 endoff[0] = p + 1
48 return o
49}
50
51func cf_eq(a: *u8, an: i64, b: *u8, bn: i64) -> i64 {
52 if an != bn { return 0 }
53 var i: i64 = 0
54 while i < an {
55 let x: i64 = a[i] as i64
56 let y: i64 = b[i] as i64
57 if x != y { return 0 }
58 i = i + 1
59 }
60 return 1
61}
62
63func cf_lcp(a: *u8, an: i64, b: *u8, bn: i64) -> i64 {
64 var lim: i64 = an
65 if bn < lim { lim = bn }
66 var i: i64 = 0
67 var go: i64 = 1
68 while go == 1 {
69 if i >= lim { go = 0 }
70 if go == 1 {
71 let x: i64 = a[i] as i64
72 let y: i64 = b[i] as i64
73 if x != y { go = 0 }
74 if x == y { i = i + 1 }
75 }
76 }
77 return i
78}
79
80func main(argc: i64, argv: *i64) -> i64 {
81 let a: *u8 = sys_mmap(16384) as *u8
82 let an: i64 = fc_read("knowledge/forge/coder_gen_f32.txt" as *u8, a, 16384)
83 let b: *u8 = sys_mmap(16384) as *u8
84 let bn: i64 = fc_read("knowledge/forge/coder_gen_nf.txt" as *u8, b, 16384)
85 std_puts("CODER-FIDELITY bring-up (float-ref vs integer tower, coder weights, greedy)\n f32: " as *u8)
86 if an > 0 { sys_write(1, a, an) }
87 std_puts(" nf : " as *u8)
88 if bn > 0 { sys_write(1, b, bn) }
89 var produced: i64 = 0
90 if an > 20 { if bn > 20 { produced = 1 } }
91 // extract p1,p2 text payloads from each
92 let af1: *u8 = sys_mmap(8192) as *u8
93 let af2: *u8 = sys_mmap(8192) as *u8
94 let bf1: *u8 = sys_mmap(8192) as *u8
95 let bf2: *u8 = sys_mmap(8192) as *u8
96 let eo: *i64 = sys_mmap(16) as *i64
97 let al1: i64 = cf_text_after(a, an, 0, af1, eo)
98 let ao1: i64 = eo[0]
99 let al2: i64 = cf_text_after(a, an, ao1, af2, eo)
100 let bl1: i64 = cf_text_after(b, bn, 0, bf1, eo)
101 let bo1: i64 = eo[0]
102 let bl2: i64 = cf_text_after(b, bn, bo1, bf2, eo)
103 var p1exact: i64 = 0
104 var p2exact: i64 = 0
105 var p1lcp: i64 = 0
106 if al1 >= 0 { if bl1 >= 0 { p1exact = cf_eq(af1, al1, bf1, bl1); p1lcp = cf_lcp(af1, al1, bf1, bl1) } }
107 if al2 >= 0 { if bl2 >= 0 { p2exact = cf_eq(af2, al2, bf2, bl2) } }
108 let exactc: i64 = p1exact + p2exact
109 std_puts(" MEASURED: exact-prompts=" as *u8)
110 std_pdec(exactc)
111 std_puts("/2 (p1=" as *u8)
112 std_pdec(p1exact)
113 std_puts(" p2=" as *u8)
114 std_pdec(p2exact)
115 std_puts(") p1-text-LCP=" as *u8)
116 std_pdec(p1lcp)
117 std_puts(" chars (near-tie flip; determinism intact by construction)\n" as *u8)
118 // mutation negctl on the (exact) p2 payload
119 var mut: i64 = 0
120 if al2 > 2 {
121 let c: *u8 = sys_mmap(8192) as *u8
122 var k: i64 = 0
123 while k < al2 { c[k] = af2[k]; k = k + 1 }
124 let mid: i64 = al2 / 2
125 let mv: i64 = c[mid] as i64
126 let fl: i64 = mv + 1
127 c[mid] = fl as u8
128 let e2: i64 = cf_eq(af2, al2, c, al2)
129 if e2 == 0 { mut = 1 }
130 }
131 std_puts(" mutation-negctl=" as *u8)
132 if mut == 1 { std_putln("CAUGHT" as *u8) }
133 if mut == 0 { std_putln("MISSED" as *u8) }
134 // PASS = produced + p2 config-sanity exact + mutation caught (NOT a bit-exactness claim)
135 var green: i64 = 0
136 if produced == 1 {
137 if p2exact == 1 {
138 if mut == 1 { green = 1 }
139 }
140 }
141 // MIGRATED onto nx_gate_verdict by nx_gate_dry_apply (D001, minimal form): every check
142 // row above is untouched, so the PASS/FAIL vector cannot change; only the hand-rolled
143 // verdict emission is replaced by the ONE shared base class. Proven by nx_gate_migrate verify.
144 let ctr__dry: *i64 = gv_ctr()
145 ctr__dry[0] = green
146 ctr__dry[1] = 1
147 let rc__dry: i64 = gv_verdict("CODER-FIDELITY-GATE" as *u8, ctr__dry, "coder weights LOAD+GENERATE coherent code through the integer tower; p2 float-exact = config/tokenizer/dequant SOUND; p1 float-diverges on a near-tie (NOT a bug, NOT the forge criterion). Determinism by construction. Proceed to L4 live " as *u8)
148 sys_exit(rc__dry)
149 return rc__dry
150}