 
      DOUBLE PRECISION FUNCTION DBSK1E(X)
C***BEGIN PROLOGUE  DBSK1E
C***DATE WRITTEN   770701   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  C10B1
C***KEYWORDS  BESSEL FUNCTION,DOUBLE PRECISION,EXPONENTIALLY SCALED,
C             MODIFIED BESSEL FUNCTION,ORDER ONE,SPECIAL FUNCTION,
C             THIRD KIND
C***AUTHOR  FULLERTON, W., (LANL)
C***PURPOSE  Computes the exponentially scaled,modified (hyperbolic)
C            Bessel function of the third kind of order one (double
C            precision).
C***DESCRIPTION
C
C DBSK1E(S) computes the double precision exponentially scaled
C modified (hyperbolic) Bessel function of the third kind of order
C one for positive double precision argument X.
C
C Series for BK1        on the interval  0.          to  4.00000E+00
C                                        with weighted error   9.16E-32
C                                         log weighted error  31.04
C                               significant figures required  30.61
C                                    decimal places required  31.64
C
C Series for AK1        on the interval  1.25000E-01 to  5.00000E-01
C                                        with weighted error   3.07E-32
C                                         log weighted error  31.51
C                               significant figures required  30.71
C                                    decimal places required  32.30
C
C Series for AK12       on the interval  0.          to  1.25000E-01
C                                        with weighted error   2.41E-32
C                                         log weighted error  31.62
C                               significant figures required  30.25
C                                    decimal places required  32.38
C***REFERENCES  (NONE)
C***ROUTINES CALLED  D1MACH,DBESI1,DCSEVL,INITDS,XERROR
C***END PROLOGUE  DBSK1E
 
 
