Writing S-Functions

ssSetNumInputPorts

Specify the number of input ports that a block has.

C Syntax

• void ssSetNumInputPorts(SimStruct *S, int_T nInputPorts)
  

Ada Syntax

• procedure ssSetNumInputPorts(S : in SimStruct; 
  nInputPorts : in Integer);
  

Arguments

S
   SimStruct representing an S-Function block.

nInputPorts
   Number of input ports on the block represented by S. Must be a nonnegative integer.

Description

Use in mdlInitializeSizes to set the number of input ports to a nonnegative integer. Invoke it using

• if (!ssSetNumInputPorts(S,nInputPorts)) return;
  

where ssSetNumInputPorts returns 0 if nInputPorts is negative or an error occurs while creating the ports. When this happens, Simulink displays an error.

Languages

Ada, C

See Also
ssSetInputPortWidth, ssSetNumOutputPorts

ssSetNumDWork

ssSetNumIWork