[PATCH] D31573: [Builtins] Add IEEE 754 support for __fixunsxfti

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> If the platform doesn't support it, the LDBL_MANT_DIG will be 53

CRT_HAS_128BIT refers to support for 128-bit integers (__int128_t), which is unrelated to the size of long double.


https://reviews.llvm.org/D31573