CMSIS DSP Library

Note: This was originally posted on 27th November 2012 at http://forums.arm.com

Hi,

I am new user to CMSIS. I have gone through the DSP library function. I am interested in fixed point arithemetic.

As per the documentation, i have understood that Q7, Q15 and Q31 formats are only supported. Is that correct ?


I would like to multiply different Q formats. Example : For multiplication, input 1 is Q17, input2 is Q 27 and output required is Q19.

How can we use the DSP library functions such as arm_mult_q31 for the example mentioned ?
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