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WASUM.FOR
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1991-04-13
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26 lines
DOUBLE PRECISION FUNCTION WASUM (N, XR, XI, INCX)
IMPLICIT NONE
C
INTEGER N, INCX
DOUBLE PRECISION XR(*), XI(*)
C
INTEGER I, IX
DOUBLE PRECISION S
C
DOUBLE PRECISION FLOP
C
C
C *** NORM1(X)
S = 0.0D0
IF (N.LE.0) GO TO 20
IX = 1
DO 10 I = 1, N
S = FLOP (S+DABS (XR(IX))+DABS (XI(IX)))
IX = IX+INCX
10 CONTINUE
20 CONTINUE
WASUM = S
C
RETURN
END