SLATEC Routines --- DFSPVN ---

*DECK DFSPVN
      SUBROUTINE DFSPVN (T, JHIGH, INDEX, X, ILEFT, VNIKX)
C***BEGIN PROLOGUE  DFSPVN
C***SUBSIDIARY
C***PURPOSE  Subsidiary to DFC
C***LIBRARY   SLATEC
C***TYPE      DOUBLE PRECISION (BSPLVN-S, DFSPVN-D)
C***AUTHOR  (UNKNOWN)
C***DESCRIPTION
C
C  **** Double Precision version of BSPLVN ****
C
C Calculates the value of all possibly nonzero B-splines at *X* of
C  order MAX(JHIGH,(J+1)(INDEX-1)) on *T*.
C
C***SEE ALSO  DFC
C***ROUTINES CALLED  (NONE)
C***REVISION HISTORY  (YYMMDD)
C   780801  DATE WRITTEN
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900328  Added TYPE section.  (WRB)
C***END PROLOGUE  DFSPVN