freebsd man page for raise

RAISE(3)						   BSD Library Functions Manual 						  RAISE(3)

NAME
     raise -- send a signal to the current thread

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <signal.h>

     int
     raise(int sig);

DESCRIPTION
     The raise() function sends the signal sig to the current thread.

RETURN VALUES
     The raise() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
     the error.

ERRORS
     The raise() function may fail and set errno for any of the errors specified for the library functions getpid(2) and kill(2).

SEE ALSO
     kill(2)

STANDARDS
     The raise() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD
								    May 7, 2010 							       BSD