# dbesy1.f

          DOUBLE PRECISION FUNCTION DBESY1 (X)
    C***BEGIN PROLOGUE  DBESY1
    C***PURPOSE  Compute the Bessel function of the second kind of order
    C            one.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C10A1
    C***TYPE      DOUBLE PRECISION (BESY1-S, DBESY1-D)
    C***KEYWORDS  BESSEL FUNCTION, FNLIB, ORDER ONE, SECOND KIND,
    C             SPECIAL FUNCTIONS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C DBESY1(X) calculates the double precision Bessel function of the
    C second kind of order for double precision argument X.
    C
    C Series for BY1        on the interval  0.          to  1.60000E+01
    C                                        with weighted error   8.65E-33
    C                                         log weighted error  32.06
    C                               significant figures required  32.17
    C                                    decimal places required  32.71
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  D1MACH, D9B1MP, DBESJ1, DCSEVL, INITDS, XERMSG
    C***REVISION HISTORY  (YYMMDD)
    C   770701  DATE WRITTEN
    C   890531  Changed all specific intrinsics to generic.  (WRB)
    C   890531  REVISION DATE from Version 3.2
    C   891214  Prologue converted to Version 4.0 format.  (BAB)
    C   900315  CALLs to XERROR changed to CALLs to XERMSG.  (THJ)
    C***END PROLOGUE  DBESY1