This directory contains a test where a set of C data structures holding
the parameters of a B-field parameterized using Chebyshev polynomials
is copied into GPU memory and then the field accessed by one GPU
routine that calls another GPU routine.

In addition, double precision values are introduced. These are only 
supported on some GPUs (with compute capability 1.3 and above), but
we anticpate all those we use will have that capability.