# d9b0mp.f

          SUBROUTINE D9B0MP (X, AMPL, THETA)
    C***BEGIN PROLOGUE  D9B0MP
    ....
    ....
    Warning:   this routine is not intended to be user-callable.
    ....
    ....
    C***SUBSIDIARY
    C***PURPOSE  Evaluate the modulus and phase for the J0 and Y0 Bessel
    C            functions.
    C***LIBRARY   SLATEC (FNLIB)
    C***CATEGORY  C10A1
    C***TYPE      DOUBLE PRECISION (D9B0MP-D)
    C***KEYWORDS  BESSEL FUNCTION, FNLIB, MODULUS, PHASE, SPECIAL FUNCTIONS
    C***AUTHOR  Fullerton, W., (LANL)
    C***DESCRIPTION
    C
    C Evaluate the modulus and phase for the Bessel J0 and Y0 functions.
    C
    C Series for BM0        on the interval  1.56250E-02 to  6.25000E-02
    C                                        with weighted error   4.40E-32
    C                                         log weighted error  31.36
    C                               significant figures required  30.02
    C                                    decimal places required  32.14
    C
    C Series for BTH0       on the interval  0.          to  1.56250E-02
    C                                        with weighted error   2.66E-32
    C                                         log weighted error  31.57
    C                               significant figures required  30.67
    C                                    decimal places required  32.40
    C
    C Series for BM02       on the interval  0.          to  1.56250E-02
    C                                        with weighted error   4.72E-32
    C                                         log weighted error  31.33
    C                               significant figures required  30.00
    C                                    decimal places required  32.13
    C
    C Series for BT02       on the interval  1.56250E-02 to  6.25000E-02
    C                                        with weighted error   2.99E-32
    C                                         log weighted error  31.52
    C                               significant figures required  30.61
    C                                    decimal places required  32.32
    C
    C***REFERENCES  (NONE)
    C***ROUTINES CALLED  D1MACH, 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   900720  Routine changed from user-callable to subsidiary.  (WRB)
    C   920618  Removed space from variable names.  (RWC, WRB)
    C***END PROLOGUE  D9B0MP