... Abstract True if an error condition has been signalled via sigerr_c . ... The status value applies to the CSPICE routines, and to any other routines which call the status-setting routine, sigerr_c . ... More specifically, when failed_c has the value SPICETRUE, some routine has indicated an error by calling the CSPICE routine, sigerr_c . ... However, here are some notes: When any CSPICE routine detects an error, the status is set to indicate an error condition via a call to sigerr_c . ...