AWR1642BOOST: Q format to decimal

Anil Kumar23

Expert 1210 points

Part Number: AWR1642BOOST

Hi,

Is there any TI provided library which can convert Q format to decimal format.

If no,what is the better to achieve this?

Regards,

Anil

over 6 years ago

0 Anand Gadiyar over 6 years ago

TI__Genius 15005 points

Anil,

Can't you simply divide the data by (2^Q-number)?

Best Regards,
Anand

0 Anil Kumar23 over 6 years ago in reply to Anand Gadiyar

Expert 1210 points

Hi Anand,

That's fine.I would like to know how the signed numbers are converted to decimal in Q format and how to determine whether overflow has occurred.

Regards,
Anil

0 Anand Gadiyar over 6 years ago in reply to Anil Kumar23

TI__Genius 15005 points

Hi Anil,

Signed numbers are saved as 2's complement numbers in the Q-format. They're treated the same way as a fixed integer would be.

Please refer to: en.wikipedia.org/.../Q_(number_format)

The Q-format is a fixed point format, and therefore overflow is a possibility. Overflow handling would need to be taken care of in your processing. This has nothing to do with conversion to decimal.

Best Regards,
Anand

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AWR1642BOOST: Q format to decimal