National-instruments AutoCode NI MATRIX Manuel d'utilisateur télécharger pdf (Page 178)

Chapter 6 Vectorized Code Generation

Note The examples within this section assume maximal vectorization unless otherwise

noted.

Multiple Arrays within a Block

All blocks support multiple vectors (arrays) as both outputs and inputs.

However, depending on exactly how the signals are connected and the

algorithm, loops might not be generated as expected. Generally speaking,

as long as multiple arrays are connected contiguously to the inputs of the

block, loops are possible. For example, examine the model in Figure 6-3

and the generated code in Example 6-6.

Figure 6-3. Multiple Array Mode

Example 6-6 Multiple Array Code (for Figure 6-3)

void subsys_1(U, Y)

struct _Sys_ExtIn *U;

struct _Subsys_1_out *Y;

{

static RT_INTEGER iinfo[4];

/***** Parameters. *****/

static RT_FLOAT R_P[20];

RT_INTEGER cnt;

static const RT_FLOAT _R_P[20] = {1.2, 2.3, 3.4, 4.5, 5.6,

1.2, 2.3, 3.4, 4.5, 5.6,

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National-instruments AutoCode NI MATRIX Manuel d'utilisateur Page 178