The migration is tested by replaying the recorded data. The replay mechanism allows
the real interfaces to be added progressively.
Difficult debugging issues can be attacked by the
FPT run-time trace
facility - FPT instruments sections of the code to capture
every left-hand-side scalar quantity to file, and it
is then possible to find the point at which two program
Data sets may be compared by the RDIFF utility, a file comparator which is insensitive to
real number formats and to small differences between numbers.