242         unimplemented!()  in abs()
246         unimplemented!()  in acos_approx()
250         unimplemented!()  in atan2()
254         unimplemented!()  in sin()
258         unimplemented!()  in sin_cos()
262         unimplemented!()  in tan()
266         unimplemented!()  in sqrt()
270         unimplemented!()  in copysign()
274         unimplemented!()  in signum()
278         unimplemented!()  in round()
282         unimplemented!()  in trunc()
286         unimplemented!()  in ceil()
290         unimplemented!()  in floor()
294         unimplemented!()  in exp()
298         unimplemented!()  in powf()
302         unimplemented!()  in mul_add()
306         unimplemented!()  in div_euclid()
310         unimplemented!()  in rem_euclid()