327 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {

   328   Flag* result = Flag::find_flag(name, len);

   329   if (result == NULL) return false;

   330   if (!result->is_uint64_t()) return false;

   331   *value = result->get_uint64_t();

   332   return true;

   333 }

   334 

   335 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {

   336   Flag* result = Flag::find_flag(name, len);

   337   if (result == NULL) return false;

   338   if (!result->is_uint64_t()) return false;

   339   uint64_t old_value = result->get_uint64_t();

   340   result->set_uint64_t(*value);

   341   *value = old_value;

   342   result->origin = origin;

   343   return true;

   344 }

   345 

   346 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {

   347   Flag* faddr = address_of_flag(flag);

   348   guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");

   349   faddr->set_uint64_t(value);

   350   faddr->origin = origin;

   351 }

   352