C+
C NAME:
C	ArrR4LinearArrR4
C PURPOSE:
C	Make linear combination of two same-size real*4 array
C CALLING SEQUENCE:
	subroutine ArrR4LinearArrR4(N,A,R1,B,R2,C)
C CALLS:
C	BadR4
C SEE ALSO:
C	Array_Info
C-
	    integer	N
	    real	A(*)
	    real	R1
	    real	B(*)
	    real	R2
	    real	C(*)

	bad = BadR4()

	iA = loc(A)
	iB = loc(B)
	iC = loc(C)

	call ArrayLoc3(iA,iB,iC,abs(N),4,I1,I2,I3)

	do I=I1,I2,I3
	    if (N .lt. 0 .and. (A(I) .eq. bad .or. B(I) .eq. bad)) then
		C(I) = bad
	    else
		C(I) = R1*A(I)+R2*B(I)
	    end if
	end do

	return
	end