I'm running some scripts with strange behavior, and when try to pin down the error I come with these two cases
$ echo "1.1 2.0 -0.9"|awk '{print($1-$2==$3?"t":"f");}'
f
$ echo "1.0 2.0 -1.0"|awk '{print($1-$2==$3?"t":"f");}'
t
it's a linux x86_64 box