m_get_api_error
This function returns the last failed function identifier. When a request to dispatch a
function fails because the function is not implemented, the System Manager updates to
hold the function identifier. Note that only the last failed function identifier is
saved.
- Syntax: int m_get_api_error()
- Parameters: None
- Returns: Last failed function identifier
API_NO_FAILED_FUNCTION (-1) - if no failed functions