_PG_init Datum_as_hexwkb Datum_as_wkb EAcomp_temporal_temporal ensure_not_empty_array fetch_fcinfo FLOAT8_EQ FLOAT8_GE FLOAT8_GT FLOAT8_LE FLOAT8_LT FLOAT8_MAX FLOAT8_MIN float8_numeric GinContainedStrategy GinContainsStrategy GinEqualStrategy GinOverlapStrategy input_interp_string LIMIT_RATIO numeric_float8 numeric_round PG_GETARG_ANYDATUM SPGistIndexType store_fcinfo Tcomp_temporal_base Tcomp_temporal_temporal temporal_recv temporal_slice temporal_write TIME_MAX_HEADER_SIZE time_max_header_size TYPMOD_GET_TEMPSUBTYPE TYPMOD_MAXLEN TYPMOD_SET_TEMPSUBTYPE

FLOAT8_EQ #define FLOAT8_EQ (   a,   b  )    (float8_cmp_internal(a, b) == 0)