_PG_init ensure_non_empty_array fetch_fcinfo FLOAT8_EQ FLOAT8_GE FLOAT8_GT FLOAT8_LE FLOAT8_LT FLOAT8_MAX FLOAT8_MIN float8_numeric GinContainedStrategy GinContainsStrategy GinEqualStrategy GinOverlapStrategy LIMIT_RATIO numeric_float8 numeric_round PG_GETARG_ANYDATUM RTAfterStrategyNumber RTBackStrategyNumber RTBeforeStrategyNumber RTFrontStrategyNumber RTOverAfterStrategyNumber RTOverBackStrategyNumber RTOverBeforeStrategyNumber RTOverFrontStrategyNumber SPGistIndexType store_fcinfo temporal_recv temporal_write tempsubtype_from_string TEMPSUBTYPE_MAX_LEN tempsubtype_name TEMPSUBTYPE_STRUCT_ARRAY_LEN time_max_header_size TYPMOD_GET_SUBTYPE

RTOverBeforeStrategyNumber #define RTOverBeforeStrategyNumber   28 /* for &<# */