Hi, (It took me a while to get back to this.)
This is a new and improved version of the patch at https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602932.html It addresses the comment from Joseph that FE_INVALID should really be tested in the case of both quiet and signaling NaNs, which is now done systematically. Bootstrapped and regtested on x86_64-pc-linux-gnu OK to commit? FX
0001-Add-__builtin_iseqsig.patch
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