How quantization is impletemented in matlab ( by quantization i mean either the conversion from floating point format to fixed point or the conversion from fixedpoint q-format to an other fixed point format)

Is there a function floating To fixed point conversion in matlab and how it works ?

Answer 1

[Andy Bartlett]

Yes, Fixed-Point Designer product makes it easy to handle fixed-point in MATLAB and Simulink.

will make it easy to handle fixed-point types.

Please, see this other post that discusses in more detail.

Here is a MATLAB example of converting to fixed-point and then back to double precision floating.

format long g
vOriginal = pi

vOriginal = 
          3.14159265358979

vFi = fi(vOriginal,1,16,8)

vFi = 
                  3.140625

          DataTypeMode: Fixed-point: binary point scaling
            Signedness: Signed
            WordLength: 16
        FractionLength: 8

vRoundTrip = double(vFi)

vRoundTrip = 
                  3.140625