void ERR_put_error(int lib, int func, int reason, const char *file,
int line);
void ERR_add_error_data(int num, ...);
DESCRIPTION
ERR_put_error() adds an error code to the thread's error queue. It
signals that the error of reason code reason occurred in function
func of library lib, in line number line of file.
This function is usually called by a macro.
ERR_add_error_data() associates the concatenation of its num string
arguments with the error code added last.
ERR_load_strings(3) can be used to register
error strings so that the application can a generate human-readable
error messages for the error code.
RETURN VALUES
ERR_put_error() and ERR_add_error_data() return
no values.