Function UIntToHexBufferInternal

src/common/base/string_number.cc:175–183

--------------------------------------------------------- unsigned int to hex buffer or string. ---------------------------------------------------------

// unsigned int to hex buffer or string.
// ---------------------------------------------------------
static char* UIntToHexBufferInternal(uint64_t value, char* buffer, int num_byte) {
  static const char hexdigits[] = "0123456789abcdef";
  int digit_byte = 2 * num_byte;
  for (int i = digit_byte - 1; i >= 0; i--) {
    buffer[i] = hexdigits[uint32_t(value) & 0xf];
    value >>= 4;
  }
  return buffer + digit_byte;
}

char* WriteHexUInt16ToBuffer(uint16_t value, char* buffer) {
  return UIntToHexBufferInternal(value, buffer, sizeof(value));