https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114181
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2024-03-01 Status|UNCONFIRMED |WAITING --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Gcc does not provide math.h. nor defines the macro issubnormal. In libstdc++, there are #undef for some macros to get around libc that define some functions as macros. If you are implementing something similar then you should be able to do that too.