SLATEC Routines --- DBVDER ---

*DECK DBVDER
      SUBROUTINE DBVDER (X, Y, YP, G, IPAR)
C***BEGIN PROLOGUE  DBVDER
C***SUBSIDIARY
C***PURPOSE  Subsidiary to DBVSUP
C***LIBRARY   SLATEC
C***TYPE      DOUBLE PRECISION (BVDER-S, DBVDER-D)
C***AUTHOR  Watts, H. A., (SNLA)
C***DESCRIPTION
C
C **********************************************************************
C     NFC = Number of base solution vectors
C
C     NCOMP = Number of components per solution vector
C
C              1 -- Nonzero particular solution
C     INHOMO =
C              2 or 3 -- Zero particular solution
C
C             0 -- Inhomogeneous vector term G(X) identically zero
C     IGOFX =
C             1 -- Inhomogeneous vector term G(X) not identically zero
C
C     G = Inhomogeneous vector term G(X)
C
C     XSAV = Previous value of X
C
C     C = Normalization factor for the particular solution
C
C           0   ( if  NEQIVP = 0 )
C     IVP =
C           Number of differential equations integrated due to
C           the original boundary value problem   ( if  NEQIVP .GT. 0 )
C
C     NOFST - For problems with auxiliary initial value equations,
C             NOFST communicates to the routine DFMAT how to access
C             the dependent variables corresponding to this initial
C             value problem.  For example, during any call to DFMAT,
C             the first dependent variable for the initial value
C             problem is in position  Y(NOFST + 1).
C             See example in SAND77-1328.
C **********************************************************************
C
C***SEE ALSO  DBVSUP
C***ROUTINES CALLED  (NONE)
C***COMMON BLOCKS    DML8SZ, DMLIVP
C***REVISION HISTORY  (YYMMDD)
C   750601  DATE WRITTEN
C   890831  Modified array declarations.  (WRB)
C   890921  Realigned order of variables in certain COMMON blocks.
C           (WRB)
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900328  Added TYPE section.  (WRB)
C   910701  Corrected ROUTINES CALLED section.  (WRB)
C   910722  Updated AUTHOR section.  (ALS)
C   920618  Minor restructuring of code.  (RWC, WRB)
C***END PROLOGUE  DBVDER