Issue with fixed point code generation

Hi,

In fixed point model, inputs values are provided as 60,110,150,160,20,166,130. Expected result is 200 and it is shown exactly in simulation result.

But in generated code, the input values are displayed as 503316480,922746880,1258291200,1342177280,167772160,1392508928,1090519040 correspondingly. Result is displayed as 1677721600 instead of 200.

Please provide feedback on this.

Answer 1

[Muruganandham Subramanian]

Hi,

In fixedpoint operation, you might used scaling either binary point or slope and bias, So the value which you given as i/p(depends scaling value) and o/p (depends scaling value) should be divided finally.

e.g..

• if you are giving 60 as i/p using binary point scaling to 2^30 will given as 64424509440 (scaled value).

So finally If you divide by the scaled value, you can get your expected result

i.e.

Exp.result=Actualresult/Scaled value

[Muruganandham Subramanian]

See.. here in your i/p and o/p you may used scaling value of 2^23 (Binary point). so that, By applying my above formula, you can get the result

[RAVINDRANATH REDDY SUDA]

Thanks Muruganandham Subramanian

[Muruganandham Subramanian]

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