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perf(dtoa,quickjs): speed up string<->number conversions #1664

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perf(dtoa,quickjs): speed up string<->number conversions #1664

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f7ec6ef
perf(dtoa): fast path for plain decimal string to double
Aug 13, 2026
4f4c51b
perf(dtoa): Ryu shortest representation for free-format doubles
Aug 13, 2026
32bcb2a
perf(quickjs): fast StringToNumber path for plain decimal strings
Aug 13, 2026
7a46c13
perf(quickjs): single-scan StringToNumber via dtoa fast parser
Aug 13, 2026
1192c85
fix(dtoa): undefined behavior when the 64-bit division quotient is zero
Aug 14, 2026
10bb178
fix(dtoa): guard fast-parser declarations like their definitions
Aug 14, 2026
ffdc551
fix(dtoa): disable the string fast path for MSVC-target clang
Aug 17, 2026
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2 changes: 2 additions & 0 deletions amalgam.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ import {loadFile, writeFile} from "qjs:std"
const cutils_h = loadFile("cutils.h")
const dtoa_c = loadFile("dtoa.c")
const dtoa_h = loadFile("dtoa.h")
const dtoa_ryu_table_h = loadFile("dtoa-ryu-table.h")
const libregexp_c = loadFile("libregexp.c")
const libregexp_h = loadFile("libregexp.h")
const libregexp_opcode_h = loadFile("libregexp-opcode.h")
Expand Down Expand Up @@ -43,6 +44,7 @@ let source = "#if defined(QJS_BUILD_LIBC) && defined(__linux__) && !defined(_GNU
source = source.replace(/#include "quickjs-atom.h"/g, quickjs_atom_h)
source = source.replace(/#include "quickjs-opcode.h"/g, quickjs_opcode_h)
source = source.replace(/#include "libregexp-opcode.h"/g, libregexp_opcode_h)
source = source.replace(/#include "dtoa-ryu-table.h"/g, dtoa_ryu_table_h)
source = source.replace(/#include "builtin-array-fromasync.h"/g,
gen_builtin_array_fromasync_h)
source = source.replace(/#include "builtin-iterator-zip.h"/g,
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364 changes: 364 additions & 0 deletions dtoa-ryu-table.h
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