Function utf8_code_units
boost::text::utf8_code_units
Synopsis
constexpr int utf8_code_units(unsigned char first_unit);
Description
Given the first (and possibly only) code unit of a UTF-8-encoded code point, returns the number of bytes occupied by that code point (in the range [1, 4]). Returns a value < 0 if first_unit is not a valid initial UTF-8 code unit.
