Function write2digits_i

include/fmt/format.h:1216–1223

template <typename Char>
FMT_INLINE void write2digits_i(Char* out, size_t value) {
  if (std::is_same<Char, char>::value && !FMT_OPTIMIZE_SIZE) {
    memcpy(out, digits2_i(value), 2);
    return;
  }
  *out++ = static_cast<Char>(digits2_i(value)[0]);
  *out = static_cast<Char>(digits2_i(value)[1]);
}

// Formats a decimal unsigned integer value writing to out pointing to a buffer
// of specified size. The caller must ensure that the buffer is large enough.