Hojun-Cho/ww

Fork 0

Commit Graph

Author	SHA1	Message	Date
Hojun-Cho	aadc6618f0	lib: banner purge + WHY-only comment sweep (rule 8) Every // ---- section banner dies (132 -> 0): names carry the WHAT. Narration deleted (filename restatements, run-with lines, what-the- next-line-does); every ref/hare cite, task cite, divergence, ABI/ layout contract, and ownership qualifier kept (borrowed-view lines restored where the sweep over-cut). Comment-only proven: all 442 walk-workdir .s and 32 import-probe .s byte-identical before/after; libbyteid 56-roster all-ID.	2026-08-08 21:10:18 +09:00
Hojun-Cho	81796cd533	lib/strconv: stof.ha port — Eisel-Lemire string→float (#106 fold-4) stof64/stof32 (f64\|f32 \| invalid \| overflow) via Eisel-Lemire fast-path (powers_of_ten[596][2]u64 + eisel_lemire 128-bit multiply) + decimal slow-path fallback (decimal.ww, fold-3). 16 fns + faithful powers_of_ten (byte-identical to Hare). u128 via pure-u64 64×64→128 (ftos_ryu.ha). Consumes &math.f64info (γ-cleanup), tagged-float-return (PREREQ-2 #157), 2D double-index (PREREQ-1 #156). 13 documented spelling-divergences (rule-9, each cites stof.ha): #155 (po10 double-index + per-field struct-copy), #161 (compound-assign explicit form), #144 (-0.0 via 1u64<<63), #158, #138, test-only #143/parsef64. Test 909 (DEC+hex+NaN/Inf/invalid/overflow, bit-exact, cstage ww run). Make test 185/185 incl 990-997 byte-id + combined_ww_fresh. Makefile: stof.ww added to w6c_ww/wwdump_ww deps (freshness, fold-3 precedent). Drew's strconv 5-fold plan 4/5. Followup #162 (wwstage lexer parsef64 1-ULP — could adopt stof64).	2026-05-27 13:55:56 +09:00
Hojun-Cho	bb6f8406c7	lib/strconv: stof_data left_shift_table + pow5_table (#106 fold-2) Port Hare's stof_data.ha tables: `let left_shift_table: [65]u16` (decimal-expansion metadata for leftshift_newdigits) + `let pow5_table: [0x051C]u8` (digits of 5^k for k=1..60). Cite ref/hare/strconv/ stof_data.ha. Literal-suffix init form (`0x0000u16`, `5u8`) — the only form cstage and wwstage both accept (cstage rejects bare-int literals in [N]u8 init as "not assignable", candidate #130). Module-level inits emit DATAW (raw .data) so bypass candidate #128's runtime store-width divergence. `powers_of_ten: [596][2]u64` (Eisel-Lemire fast-path) deferred to consumer-driven port — only stof.ha references it. Prerequisite for fold-3 (decimal.ha port) where leftshift_newdigits consumes both tables.	2026-05-26 20:01:47 +09:00

Author

SHA1

Message

Date

Hojun-Cho

aadc6618f0

lib: banner purge + WHY-only comment sweep (rule 8)

Every // ---- section banner dies (132 -> 0): names carry the WHAT.
Narration deleted (filename restatements, run-with lines, what-the-
next-line-does); every ref/hare cite, task cite, divergence, ABI/
layout contract, and ownership qualifier kept (borrowed-view lines
restored where the sweep over-cut). Comment-only proven: all 442
walk-workdir .s and 32 import-probe .s byte-identical before/after;
libbyteid 56-roster all-ID.

2026-08-08 21:10:18 +09:00

Hojun-Cho

81796cd533

lib/strconv: stof.ha port — Eisel-Lemire string→float (#106 fold-4)

stof64/stof32 (f64|f32 | invalid | overflow) via Eisel-Lemire fast-path
(powers_of_ten[596][2]u64 + eisel_lemire 128-bit multiply) + decimal
slow-path fallback (decimal.ww, fold-3). 16 fns + faithful powers_of_ten
(byte-identical to Hare). u128 via pure-u64 64×64→128 (ftos_ryu.ha).
Consumes &math.f64info (γ-cleanup), tagged-float-return (PREREQ-2 #157),
2D double-index (PREREQ-1 #156).

13 documented spelling-divergences (rule-9, each cites stof.ha): #155
(po10 double-index + per-field struct-copy), #161 (compound-assign explicit
form), #144 (-0.0 via 1u64<<63), #158, #138, test-only #143/parsef64.
Test 909 (DEC+hex+NaN/Inf/invalid/overflow, bit-exact, cstage ww run).
Make test 185/185 incl 990-997 byte-id + combined_ww_fresh. Makefile:
stof.ww added to w6c_ww/wwdump_ww deps (freshness, fold-3 precedent).

Drew's strconv 5-fold plan 4/5. Followup #162 (wwstage lexer parsef64
1-ULP — could adopt stof64).

2026-05-27 13:55:56 +09:00

Hojun-Cho

bb6f8406c7

lib/strconv: stof_data left_shift_table + pow5_table (#106 fold-2)

Port Hare's stof_data.ha tables: `let left_shift_table: [65]u16`
(decimal-expansion metadata for leftshift_newdigits) + `let pow5_table:
[0x051C]u8` (digits of 5^k for k=1..60). Cite ref/hare/strconv/
stof_data.ha. Literal-suffix init form (`0x0000u16`, `5u8`) — the only
form cstage and wwstage both accept (cstage rejects bare-int literals
in [N]u8 init as "not assignable", candidate #130). Module-level inits
emit DATAW (raw .data) so bypass candidate #128's runtime store-width
divergence. `powers_of_ten: [596][2]u64` (Eisel-Lemire fast-path)
deferred to consumer-driven port — only stof.ha references it.
Prerequisite for fold-3 (decimal.ha port) where leftshift_newdigits
consumes both tables.

2026-05-26 20:01:47 +09:00

3 Commits