SLATEC Routines --- DEFCMN ---

*DECK DEFCMN
      SUBROUTINE DEFCMN (NDATA, XDATA, YDATA, SDDATA, NORD, NBKPT,
     +   BKPTIN, MDEIN, MDEOUT, COEFF, BF, XTEMP, PTEMP, BKPT, G, MDG,
     +   W, MDW, LW)
C***BEGIN PROLOGUE  DEFCMN
C***SUBSIDIARY
C***PURPOSE  Subsidiary to DEFC
C***LIBRARY   SLATEC
C***TYPE      DOUBLE PRECISION (EFCMN-S, DEFCMN-D)
C***AUTHOR  Hanson, R. J., (SNLA)
C***DESCRIPTION
C
C     This is a companion subprogram to DEFC( ).
C     This subprogram does weighted least squares fitting of data by
C     B-spline curves.
C     The documentation for DEFC( ) has complete usage instructions.
C
C***SEE ALSO  DEFC
C***ROUTINES CALLED  DBNDAC, DBNDSL, DCOPY, DFSPVN, DSCAL, DSORT, XERMSG
C***REVISION HISTORY  (YYMMDD)
C   800801  DATE WRITTEN
C   890531  Changed all specific intrinsics to generic.  (WRB)
C   890618  Completely restructured and extensively revised (WRB & RWC)
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900315  CALLs to XERROR changed to CALLs to XERMSG.  (THJ)
C   900328  Added TYPE section.  (WRB)
C   900510  Convert XERRWV calls to XERMSG calls.  (RWC)
C   900604  DP version created from SP version.  (RWC)
C***END PROLOGUE  DEFCMN