[cfe-dev] LDBL_EPSILON value

Tania A via cfe-dev cfe-dev at lists.llvm.org
Wed Nov 2 11:08:56 PDT 2016


There has been some discussion surrounding clang's value of LDBL_EPSILON
(e.g. see Bugzilla 48341).

clang and GCC both use a "best-case" value of 2^-1074 for epsilon whereas
IBM's clang-based compiler opts to use the more conservative value of
2^-105. I would like to reopen a discussion about possibly redefining
clang's epsilon value.

- TA
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