C+
C NAME:
C	ArrR4Negate
C PURPOSE:
C	Change sign in real*4 array
C CALLING SEQUENCE:
	subroutine ArrR4Negate(N,C)
C CALLS:
C	BadR4
C SEE ALSO:
C	Array_Info
C-
	    integer	N
	    real	C(*)

	bad = BadR4()

	do I=1,abs(N)
	    if (N .gt. 0 .or. C(I) .ne. bad) C(I) = -C(I)
	end do

	return
	end