126   T guess = ldexp(1., exponent/3);              // Rough guess is to divide the exponent by three.  in cbrt_noderiv()
231 …T guess = ldexp(1., exponent/3);                    // Rough guess is to divide the exponent by th…  in cbrt_deriv()
232   T min = ldexp(0.5, exponent/3);                     // Minimum possible value is half our guess.  in cbrt_deriv()
233   T max = ldexp(2., exponent/3);                      // Maximum possible value is twice our guess.  in cbrt_deriv()
290 …T guess = ldexp(1., exponent/3);                    // Rough guess is to divide the exponent by th…  in cbrt_2deriv()
291   T min = ldexp(0.5, exponent/3);                     // Minimum possible value is half our guess.  in cbrt_2deriv()
292   T max = ldexp(2., exponent/3);                      // Maximum possible value is twice our guess.  in cbrt_2deriv()
314 …T guess = ldexp(1., exponent / 3);                    // Rough guess is to divide the exponent by …  in cbrt_2deriv_lambda()
315 … T min = ldexp(0.5, exponent / 3);                     // Minimum possible value is half our guess.  in cbrt_2deriv_lambda()
316 …T max = ldexp(2., exponent / 3);                      // Maximum possible value is twice our guess.  in cbrt_2deriv_lambda()
418   T guess = ldexp(1., exponent / 5);    // Rough guess is to divide the exponent by five.  in fifth_2deriv()
419   T min = ldexp(0.5, exponent / 5);     // Minimum possible value is half our guess.  in fifth_2deriv()
420   T max = ldexp(2., exponent / 5);      // Maximum possible value is twice our guess.  in fifth_2deriv()