NAME
	origin - determine origin of last call

SYNOPSIS
	int origin()


DESCRIPTION
	Returns an integer specifying how the current  function  was
	called.  Current values are:

	1     Driver (heart_beats, etc)
	2     Local function call
	4     call_other()
	8     From simul_efun object
	16    call_out()

	Config.h must define MUDOS_ORIGIN for this function to exist.	

SEE ALSO
	efun/previous_function, efun/previous_program, origin.h