ssSetDWorkRTWIdentifier

Specify the identifier used to declare a DWork vector in code generated from the associated S-function

Syntax

char_T *ssSetDWorkRTWIdentifier(SimStruct *S, int_T vector, char_T *id)

Arguments

S

SimStruct that represents an S-Function block.

vector

Index of the work vector, where the index is one of 0, 1, 2, ... ssGetNumDWork(S)-1.

id

DWork vector Identifier. This must point to persistent memory.

Returns

A pointer (char_T *) to the Simulink^® Coder™ identifier entered in id.

Description

Specifies id as the identifier used in code generated by the Simulink Coder product to declare the DWork vector specified by vector. For more information on using DWork vectors, see How to Use DWork Vectors.

This function must only be called from the mdlInitializeSizes or mdlSetWorkWidths functions.

Languages

C, C++

Examples

See the S-function sfun_rtwdwork.c used in sfcndemo_sfun_rtwdwork.

The following portion of the mdlInitializeSizes method initializes the DWork vector and all code generation properties associated with it.

ssSetNumDWork(S, 1);
ssSetDWorkWidth(S, 0, 1);
ssSetDWorkDataType(S, 0, SS_DOUBLE);

/* Identifier; free any old setting and update */
id = ssGetDWorkRTWIdentifier(S, 0);
if (id != NULL) {
    free(id);
}
id = malloc(80);
mxGetString(ID_PARAM(S), id, 80);
ssSetDWorkRTWIdentifier(S, 0, id);

The following portion of the mdlTerminate method frees up the memory allocated for the identifier to prevent any memory leaks.

char* id;
char* tq;

/* Identifier; free any old setting and update */
id = ssGetDWorkRTWIdentifier(S, 0);
if (id != NULL) {
    free(id);
}
ssSetDWorkRTWIdentifier(S, 0, NULL);