avr-libc: <errno.h>: System Errors AVR Libc Home Page AVR Libc Development Pages Main Page User Manual Library Reference FAQ Alphabetical Index Example Projects <errno.h>: System ErrorsDetailed Description #include <errno.h> Some functions in the library set the global variable errno when an error occurs. The file, <errno.h>, provides symbolic names for various error codes. Warning:The errno global variable is not safe to use in a threaded or multi-task system. A race condition can occur if a task is interrupted between the call which sets error and when the task examines errno. If another task changes errno during this time, the result will be incorrect for the interrupted task. Defines #define EDOM   33 #define ERANGE   34 Define Documentation #define EDOM   33 Domain error. #define ERANGE   34 Range error. Automatically generated by Doxygen 1.5.6 on 4 Dec 2008.