* Update the domain and range of comments for the polynomial
approximations, including using the the correct variable names
(e.g., pp(x) instead of p(x)).
* Use hex values of the form 0x3e0375d4 instead of 0x1.06eba8p-3,
which was obtained from printf("%.6a").
* In the domain [0.84375, 1.25], qa(x) can be reduced from a 4th
order polynomial to 3rd order.
* In the domain [1.25,1/0.35], sa(x) can be reduced from a 4th
order polynomial to 3rd order.
* In the domain [1/0.35, 11], the 4th order polynomials rb(x) and
sb(x) can be reduced to 2nd and 3rd order, respectively.
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