ssSetDataTypeZero (Writing S-Functions)

Set zero representation of a data type.

Syntax

int_T ssSetDataTypeZero(SimStruct *S, DTypeId id, void* zero)

Arguments

S
SimStruct representing an S-Function block.

id
ID of data type.

zero
Zero representation of the data type specified by id.

Description

Sets the zero representation of the data type specified by id to 0 and returns 1 (true) if id is valid, the size of the data type has been set, and the zero representation has not already been set. Otherwise, this macro returns 0 (false) and reports an error. Because this macro reports any error that occurs, you do not need to use ssSetErrorStatus to report the error.

Note This macro makes a copy of the zero representation of the data type for Simulink's use. Thus, your S-function does not have to maintain the original in memory.

Languages

Example

The following example registers and sets the size and zero representation of a custom data type named myDataType.

typedef struct{
    int8_T   a;
    uint16_T b;
}myStruct;

int_T    status;
DTypeId  id;
myStruct tmp;      

id = ssRegisterDataType(S, "myDataType");
if(id == INVALID_DTYPE_ID) return;


status = ssSetDataTypeSize(S, id, sizeof(tmp));
if(status == 0) return;

tmp.a = 0;
tmp.b = 1;
status = ssSetDataTypeZero(S, id, &tmp);
if(status == 0) return;

ssSetDataTypeSize ssSetDWorkComplexSignal