ssGetInputPortRealSignalPtrs

Get pointers to signals of type double connected to an input port

Syntax

InputRealPtrsType ssGetInputPortRealSignalPtrs(SimStruct *S,
 int_T port)

Arguments

S

SimStruct representing an S-Function block.

port

Index of the port whose signal is required.

Returns

Pointers to the elements of a signal of type double connected to the input port specified by the index port.

Description

This macro returns a pointer to an array of pointers to the real_T input signal elements. The length of the array of pointers is equal to the width of the input port. The input port index starts at 0 and ends at the number of input ports minus 1.

    Note   The ssGetInputPortRealSignalPtrs macro becomes a function when you compile your S-function in debug mode (mex -g).

Languages

C, C++

Example

The following example reads all input port signals.

int_T i,j;
int_T nInputPorts = ssGetNumInputPorts(S);
for (i = 0; i < nInputPorts; i++) {
  InputRealPtrsType uPtrs = 
                ssGetInputPortRealSignalPtrs(S,i);
  int_T nu = ssGetInputPortWidth(S,i);
  for (j = 0; j < nu; j++) {
    SomeFunctionToUseInputSignalElement(*uPtrs[j]);
  }
}

See the S-function sfun_atol.csfun_atol.c used in sfcndemo_sfun_atolsfcndemo_sfun_atol for a complete example using this function.

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