D04BAF Example Program Results
Find the derivatives of the polygamma (psi) function
using function values generated by S14AEF.
Demonstrate the effect of successively reducing HBASE.
Derivative (1) calculated using S14AEF : 4.0153E+02
Derivative and error estimates for derivative (1)
hbase DER(1) EREST(1)
2.5000E-03 4.0204E+02 1.3940E+02
2.5000E-04 4.0153E+02 4.9170E-11
2.5000E-05 4.0153E+02 2.1799E-10
2.5000E-06 4.0153E+02 1.1826E-09
Derivative (2) calculated using S14AEF : -1.6002E+04
Derivative and error estimates for derivative (2)
hbase DER(2) EREST(2)
2.5000E-03 -1.6022E+04 5.5760E+03
2.5000E-04 -1.6002E+04 1.2831E-07
2.5000E-05 -1.6002E+04 6.0543E-06
2.5000E-06 -1.6002E+04 9.5762E-04
Derivative (3) calculated using S14AEF : 9.6001E+05
Derivative and error estimates for derivative (3)
hbase DER(3) EREST(3)
2.5000E-03 9.1465E+05 -7.3750E+06
2.5000E-04 9.6001E+05 2.3718E-04
2.5000E-05 9.6001E+05 4.2253E-02
2.5000E-06 9.6001E+05 5.9679E+01