hypotl
long double hypotl(long double, long double);
extern long double hypotl(long double, long double);
return (y1 * hypotl(x, y));
return (t1 * hypotl(x, y));
extern long double hypotl(long double, long double);
return (scalbnl(one, -16381) * hypotl(x, y));
return (t1 * hypotl(x, y));
extern long double hypotl(long double, long double);
return (hypotl(LD_RE(z), LD_IM(z)));