1*DECK DT0
2      DOUBLE PRECISION FUNCTION DT0 (X)
3C***BEGIN PROLOGUE  DT0
4C***PURPOSE  Subsidiary to
5C***LIBRARY   SLATEC
6C***AUTHOR  (UNKNOWN)
7C***ROUTINES CALLED  DF0S
8C***REVISION HISTORY  (YYMMDD)
9C   ??????  DATE WRITTEN
10C   891214  Prologue converted to Version 4.0 format.  (BAB)
11C***END PROLOGUE  DT0
12      DOUBLE PRECISION A,B,DF0S,X,X1,Y
13C***FIRST EXECUTABLE STATEMENT  DT0
14      A = 0.0D+00
15      B = 0.1D+01
16      X1 = X+0.1D+01
17      Y = (B-A)/X1+A
18      DT0 = (B-A)*DF0S(Y)/X1/X1
19      RETURN
20      END
21