NAG Library Manual, Mark 28.7
Interfaces:  FL   CL   CPP   AD 
NAG FL Interface Introduction
Example description

 S21BEF Example Program Results

     PHI    DM      S21BEF

    0.52   0.25      0.5294
    1.05   0.50      1.1424
    1.57   0.75      2.1565