Hi,
It looks like both the ippsSqrt_32f and ippsSqrt_32f_I return +Inf for a positive denormal number.
See example in https://gist.github.com/yairchu/730ee5fa0368758c7fe8050447c43016 - the output is
4.3665076719685603e-39 6.6079555878345896e-20
inf 0
This happens with both the latest 2018 Update 3 and in 2017 Update 4.
Looks like a bug unless I'm misunderstanding something.
Thanks,
Dan