The following table lists functions, macros, and variables specific to the C Node.
| Function | Description |
|---|---|
| cnode_error_check | Macro that checks the input expression for error. If the result is negative, then this macro sets it to the C node error and jumps to the Error label. You must define an Error label to use this macro. |
| cnode_error_code | An integer variable representing the error code in the error in and error out cluster terminals. This variable is automatically set by cnode_error_check and cnode_null_check. |
| cnode_error_set | Macro that sets the C node error code and status. Pass the integer error code in the first parameter and the Boolean error status (1 or 0) in the second parameter. A non-zero status indicates that an error has occurred, and zero indicates otherwise. |
| cnode_error_source | A string variable representing the source of error in the error in and error out cluster terminals. This variable is automatically set by cnode_error_check and cnode_null_check. |
| cnode_error_status | A Boolean variable representing the status of error in the error in and error out cluster terminals. An error is set if this variable is TRUE and not set if this variable is FALSE. This variable is automatically set by cnode_error_check and cnode_null_check. |
| cnode_get_array_length | Returns the number of elements in the array C node array terminal. |
| cnode_null_check | Macro that checks the if the input expression is NULL (zero). If the expression is NULL, then this macro sets the C node error to indicate that memory allocation failed and jumps to the Error label. You must define an Error label to use this macro. |
| cnode_printf | Prints to the Output window. |
| cnode_size_array | Resizes the array C node array terminal to hold length number of elements. Returns non-zero on success and zero on failure. |
| cnode_size_string | Resizes the string C node string terminal to hold size bytes including the terminating NUL byte. Returns non-zero on success and zero on failure. |