206         unimplemented!()  in abs()
210         unimplemented!()  in acos_approx()
214         unimplemented!()  in atan2()
218         unimplemented!()  in sin()
222         unimplemented!()  in sin_cos()
226         unimplemented!()  in tan()
230         unimplemented!()  in sqrt()
234         unimplemented!()  in copysign()
238         unimplemented!()  in signum()
242         unimplemented!()  in round()
246         unimplemented!()  in trunc()
250         unimplemented!()  in ceil()
254         unimplemented!()  in floor()
258         unimplemented!()  in exp()
262         unimplemented!()  in powf()
266         unimplemented!()  in mul_add()
270         unimplemented!()  in div_euclid()
274         unimplemented!()  in rem_euclid()