The powerpc long double (double-double) can be a bit of a bitch, but you've just got to love this aspect of it (on Debian wheezy, perl-5.18.1, built with -Duselongdouble, gcc-4.6.3):
$ perl -le 'print "ok" if 1.0 + 5e-200 != 1.0;'
ok
Are there any other processors providing such discernment ?
Are there any compiler tricks that will enable the building of a perl (on an otherwise non-accommodating machine) that provides such discernment ?