There are two examaples demonstrating the real work of FPU Tracer - 
modified target executables the 1st and 3rd phase of Hacker Challenge reversing
competition (http://hackerchallenge.org). 
Here are the parameters that should be used for enclosed executables:

1. Phase1 executable:

tracer.exe phase1.exe -r ST0 10.9319 210.5 -f phase1_log.txt -i fnstsw -d

2. Phase3 executable:

tracer.exe phase3.exe -r ST0 -59.0079 200 -f phase3_log.txt -i fcomp -d