Run analyse.pl:
./analyse.pl sirens_fxt.txt

Run analyse.pl tests (need perl-Module-Build and perl-Test-More package):
perl Build.pl
./Build manifest
./Build test

Build analyse.c:
gcc -m64 -std=c11 -pedantic -Wall -Wshadow -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes analyse.c -o analyse

Run analyse.c:
./analyse sirens_fxt.txt

Run analyse.c tests:
./cunittest