MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Guide de l'utilisateur télécharger pdf (Page 91)

Quick Start Tutorials

3-35

You will observe the effects of expression folding later in this tutorial. Not

performing expression folding allows you to see the effects of the block

output optimizations.

3 Click Apply to apply the new settings.

4 Click Generate Code, or type Ctrl+B in the model window to generate

code again.

As before, Real-Time Workshop generates code in the

example_grt_rtw

directory. Note that the previously generated code is overwritten.

5 Edit example_grt_rtw/example.c and examine the function

example_output.

With buffer optimizations enabled, the code in

example_output reuses

temporary buffers with local scope,

rtb_sin_out and rtb_gain_out, rather

than assigning global buffers to each input and output.

static void example_output(int_T tid)

{

real_T rtb_sin_out;

real_T rtb_gain_out;

rtb_sin_out = example_P.SineWave_Amp *

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MATLAB REAL-TIME WORKSHOP 7 - TARGET LANGUAGE COMPILER Guide de l'utilisateur Page 91