Fix general chars format changes

include/boost/charconv/detail/ryu/ryu_generic_128.hpp

@@ -432,7 +432,11 @@ static inline int generic_to_chars_fixed(const struct floating_decimal_128 v, ch
  ++current_len;
  if (current_len - shift_width > precision)
  {
- current_len = static_cast<int>(shift_width) + precision;
+ if (precision > 0)
+ {
+ current_len = static_cast<int>(shift_width) + precision;
+ }
+
  precision = 0;
  // Since we wrote additional characters into the buffer we need to add a null terminator,
  // so they are not read
@@ -528,7 +532,17 @@ static inline int generic_to_chars(const struct floating_decimal_128 v, char* re
  const int64_t exp = v.exponent + static_cast<int64_t>(olength);
  if (std::abs(exp) <= olength)
  {
- return generic_to_chars_fixed(v, result, result_size, precision);
+ auto ptr = generic_to_chars_fixed(v, result, result_size, precision);
+ if (result[ptr - 1] == '0')
+ {
+ --ptr;
+ while (result[ptr] == '0')
+ {
+ --ptr;
+ }
+ ++ptr;
+ }
+ return ptr;
  }
  }