__builtin_isinfd32/__builtin_isinfd64/__builtin_isinfd64 call isinfd32/isinfd64/isinfd128, which aren't documented. They also don't have __dpd_/__bid_ prefix.
-- Summary: DFP calls undocumented libdecnumber functions Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl at lucon dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32297