complex_to_float_dtype()
default_invalid_value()
demote_dtype()
determine_fp_types()
find_common_dtype()
float_to_complex_dtype()
get_dtype()
get_itemsize()
is_complex()
is_fp()
is_integer()
is_signed()
is_unsigned()
match_bool_type()
match_complex_type()
match_dtype()
match_float_type()
match_signed_type()
match_unsigned_type()