Daniel Lemire 3254622f74 Add chars_format::javascript_sloppy (Annex B NonOctalDecimalIntegerLiteral) ... chars_format::javascript follows the strict-mode grammar, which rejects any leading zero. In sloppy mode, JavaScript also accepts a leading zero when one of the digits is 8 or 9 ("08.5" is 8.5, Annex B's NonOctalDecimalIntegerLiteral). A leading zero followed only by octal digits is a LegacyOctalIntegerLiteral ("0775"), which is not a decimal number: it is rejected with the new parse_error::legacy_octal_integer_part so the caller can parse it in base 8. javascript_sloppy sets one extra bit on top of javascript, and the check lives inside the existing runtime JavaScript branch of parse_number_string<false>, so the general path is unchanged. An interleaved A/B with realbenchmark on canada.txt and mesh.txt (ASCII and UTF-16, 32/64-bit) shows identical instructions per float and cycles within noise. Document both formats in the README.		2026-09-15 10:52:49 -04:00
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fast_float	Add chars_format::javascript_sloppy (Annex B NonOctalDecimalIntegerLiteral)	2026-09-15 10:52:49 -04:00