Rank: 2789 based on 16 downloads (last 30 days) and 2 files submitted
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Szymon Leja

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01 Feb 2008 Decimal to Q15 format Function that converts decimal value to Q15 format. Author: Szymon Leja dec decimal q15 to co..., dsp 10 0
  • 5.0
5.0 | 1 rating
22 Jan 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja signal processing, q15, dec, converter, decimal, hexadecimal 6 4
  • 3.33333
3.3 | 3 ratings
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24 Feb 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja Leja, Szymon

Dave Your solutions are good but only for positive numbers.

decimal to Q15 -> dec2hex(y) -> y must be a nonnegative integer.

Q15 to decimal -> for negative numbers return wrong result.

Best regards,
S.L.
23 Feb 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja Hardell, Dave

Unfortunately for me, this solution requires the fixed-point toolbox (for bin2num, or hex2num). This is my solution:
decimal to Q15:

y=int16(x*2^15);
% then use dec2hex(y) if you want hex format

Q15 to decimal:

% use hex2dec(x) first if x is in hex format
x=double(x);
y=x*2^-15;

Is there any reason this should not work?

Dave

11 Feb 2008 Decimal to Q15 format Function that converts decimal value to Q15 format. Author: Szymon Leja siddamal, saroja
24 Jan 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja B, A

VERY USEFUL, Thank you.
22 Jan 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja x@y.z, Jos

Please add a proper help section, including a H1 line, input and output requirements, and an example as well as internal comments, if you want that anyone else but you will find this code useful.
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binary, companion, converter, dec, dec decimal q15 to convert
Files Tagged by Szymon View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
01 Feb 2008 Decimal to Q15 format Function that converts decimal value to Q15 format. Author: Szymon Leja dec decimal q15 to co..., dsp 10 0
  • 5.0
5.0 | 1 rating
22 Jan 2008 Q15 to decimal converter Silmple function that converts an value from Q15 to decimal. Author: Szymon Leja signal processing, q15, dec, converter, decimal, hexadecimal 6 4
  • 3.33333
3.3 | 3 ratings

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