Minor compatibility fixup

[malachib]

Changed two things:

• CLang/ARM64 can't quite resolve unsigned long long == unsigned long despite them both being 64-bit unsigned integers. Comparing those two via numeric limits now
• Presumed a default parameter for compressed_cache_detail of ieee754_binary64. If I got that wrong, my feelings won't be hurt and you can reject the PR :)

[malachib]

Two issues need attention before this is a viable PR:

• I forgot use stdr namespace. Oops
• I'm feeling there's a better way to compare the two than max() thought max() is reasonable

[jk-jeon]

I'm closing this because I came up with a different method of dealing with unsigned long long vs unsigned long issue in a recent commit.