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DOUBLE PRECISION FUNCTION esum(mu,x)
C-----------------------------------------------------------------------
C EVALUATION OF EXP(MU + X)
C-----------------------------------------------------------------------
C .. Scalar Arguments ..
DOUBLE PRECISION x
INTEGER mu
C ..
C .. Local Scalars ..
DOUBLE PRECISION w
C ..
C .. Intrinsic Functions ..
INTRINSIC exp
C ..
C .. Executable Statements ..
IF (x.GT.0.0D0) GO TO 10
C
IF (mu.LT.0) GO TO 20
w = mu + x
IF (w.GT.0.0D0) GO TO 20
esum = exp(w)
RETURN
C
10 IF (mu.GT.0) GO TO 20
w = mu + x
IF (w.LT.0.0D0) GO TO 20
esum = exp(w)
RETURN
C
20 w = mu
esum = exp(w)*exp(x)
RETURN
END
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