ESP8266 Community Forum

- Mon Aug 01, 2016 5:58 pm #51912 Greetings,

I noticed that Serial.print does not support uint64_t variables which has me wondering if the math package supports 64 bit precision. Does anyone in this forum know the precision level of the math package?

Thanks in advance!

- Mon Aug 01, 2016 9:20 pm #51920 I don't understand your question ...
Serial.print() is character based function.
Why it should be aware of uint64_t ?
Post your guilty code so that we can figure out ...

- Wed Aug 03, 2016 2:59 pm #52047 Greetings,
Thanks for your interest!

I understand Serial.println() prints ASCII characters but it automatically does the conversion for uint32_t, 32 bit integers. Since my post I noticed a posting of an alternate println library function that apparently will handle 64 bit integers.

You have me thinking that I should try an itoa conversion to a char array and then print the result. I am not sure if the itoa function works for 64 bit integers - possibly that is the problem.

BTW I would like to delete my other similar post under general discussions but do not know how to do that.

Thanks again!

- Wed Aug 03, 2016 3:10 pm #52051 If you mean using "size_t println(unsigned long, int = DEC);", then there is no needs for something else.

But about your original question about uint64_t, did it failed to compile or not ?