249 std::size_t ConsumeDigits(const char* begin, const char* end, int max_digits,  in ConsumeDigits()  argument
256   const char* const original_begin = begin;  in ConsumeDigits()
261   while (!*out && end != begin && *begin == '0') ++begin;  in ConsumeDigits()
265       (end - begin > max_digits) ? begin + max_digits : end;  in ConsumeDigits()
266   while (begin < significant_digits_end && IsDigit<base>(*begin)) {  in ConsumeDigits()
269     auto digit = static_cast<T>(ToDigit<base>(*begin));  in ConsumeDigits()
274     ++begin;  in ConsumeDigits()
277   while (begin < end && IsDigit<base>(*begin)) {  in ConsumeDigits()
278     dropped_nonzero = dropped_nonzero || (*begin != '0');  in ConsumeDigits()
279     ++begin;  in ConsumeDigits()
285   return begin - original_begin;  in ConsumeDigits()
297 bool ParseInfinityOrNan(const char* begin, const char* end,  in ParseInfinityOrNan()  argument
299   if (end - begin < 3) {  in ParseInfinityOrNan()
302   switch (*begin) {  in ParseInfinityOrNan()
307       if (strings_internal::memcasecmp(begin + 1, "nf", 2) != 0) {  in ParseInfinityOrNan()
311       if (end - begin >= 8 &&  in ParseInfinityOrNan()
312           strings_internal::memcasecmp(begin + 3, "inity", 5) == 0) {  in ParseInfinityOrNan()
313         out->end = begin + 8;  in ParseInfinityOrNan()
315         out->end = begin + 3;  in ParseInfinityOrNan()
324       if (strings_internal::memcasecmp(begin + 1, "an", 2) != 0) {  in ParseInfinityOrNan()
328       out->end = begin + 3;  in ParseInfinityOrNan()
331       begin += 3;  in ParseInfinityOrNan()
332       if (begin < end && *begin == '(') {  in ParseInfinityOrNan()
333         const char* nan_begin = begin + 1;  in ParseInfinityOrNan()
339           out->subrange_begin = begin + 1;  in ParseInfinityOrNan()
355 strings_internal::ParsedFloat ParseFloat(const char* begin, const char* end,  in ParseFloat()  argument
360   if (begin == end) return result;  in ParseFloat()
363   if (ParseInfinityOrNan(begin, end, &result)) {  in ParseFloat()
367   const char* const mantissa_begin = begin;  in ParseFloat()
368   while (begin < end && *begin == '0') {  in ParseFloat()
369     ++begin;  // skip leading zeros  in ParseFloat()
376       begin, end, MantissaDigitsMax<base>(), &mantissa, &mantissa_is_inexact);  in ParseFloat()
377   begin += pre_decimal_digits;  in ParseFloat()
392   if (begin < end && *begin == '.') {  in ParseFloat()
393     ++begin;  in ParseFloat()
397       const char* begin_zeros = begin;  in ParseFloat()
398       while (begin < end && *begin == '0') {  in ParseFloat()
399         ++begin;  in ParseFloat()
401       std::size_t zeros_skipped = begin - begin_zeros;  in ParseFloat()
409         begin, end, digits_left, &mantissa, &mantissa_is_inexact);  in ParseFloat()
410     begin += post_decimal_digits;  in ParseFloat()
426   if (mantissa_begin == begin) {  in ParseFloat()
430   if (begin - mantissa_begin == 1 && *mantissa_begin == '.') {  in ParseFloat()
440       result.subrange_end = begin;  in ParseFloat()
449   const char* const exponent_begin = begin;  in ParseFloat()
452   if (AllowExponent(format_flags) && begin < end &&  in ParseFloat()
453       IsExponentCharacter<base>(*begin)) {  in ParseFloat()
455     ++begin;  in ParseFloat()
456     if (begin < end && *begin == '-') {  in ParseFloat()
458       ++begin;  in ParseFloat()
459     } else if (begin < end && *begin == '+') {  in ParseFloat()
460       ++begin;  in ParseFloat()
462     const char* const exponent_digits_begin = begin;  in ParseFloat()
464     begin += ConsumeDigits<10>(begin, end, kDecimalExponentDigitsMax,  in ParseFloat()
466     if (begin == exponent_digits_begin) {  in ParseFloat()
470       begin = exponent_begin;  in ParseFloat()
493   result.end = begin;  in ParseFloat()
497 template ParsedFloat ParseFloat<10>(const char* begin, const char* end,
499 template ParsedFloat ParseFloat<16>(const char* begin, const char* end,