NAG Library Manual, Mark 30.3
Interfaces:  FL   CL   CPP   AD 
NAG FL Interface Introduction
Example description

G01HBF Example Program Data
 4  0.00001 'c'
 0.0  0.0  0.0  0.0
 1.0  0.9  0.9  0.9
 0.9  1.0  0.9  0.9
 0.9  0.9  1.0  0.9
 0.9  0.9  0.9  1.0
-2.0 -2.0 -2.0 -2.0
 2.0  2.0  2.0  2.0