Template:cpp/types/dsc fp HAS SUBNORM
From cppreference.com
|- class="t-dsc"
|FLT_HAS_SUBNORMDBL_HAS_SUBNORMLDBL_HAS_SUBNORM
(C++17)
| specifies whether the type supports subnormal (denormal) numbers:
-1 – indeterminable, 0 – absent, 1 – present
(macro constant)
|-
