assert_v Subroutine

	SUBROUTINE assert_v(n,string)
	CHARACTER(LEN=*), INTENT(IN) :: string
	LOGICAL, DIMENSION(:), INTENT(IN) :: n
	if (.not. all(n)) then
		write (*,*) 'nrerror: an assertion failed with this tag:', &
			string
		STOP 'program terminated by assert_v'
	end if
	END SUBROUTINE assert_v