Man page issues: logb, significand, cbrt, log2, log10, exp10

[Morten Welinder]

Thanks.

There is (was?) already crlibm out there.
https://core-math.gitlabpages.inria.fr/  No particular need for wheel
reinvention here.

FWIW, it appears that the author of the glibc exp10 implementation
agrees with me that the implementation is sub-standard:

https://codebrowser.dev/glibc/glibc/math/e_exp10.c.html

/* This is a very stupid and inprecise implementation. It'll get
replaced sometime (soon?). */
return __ieee754_exp (M_LN10 * arg);


Compare with musl:

https://github.com/rofl0r/musl/blob/master/src/math/exp10.c