RFC: removing slow paths in various dbl-64 libm functions

[Carlos O'Donell]

On 12/01/2015 11:43 AM, Szabolcs Nagy wrote:
> if that happens it should be implemented in such a way
> that -ffast-math at link time does not affect the
> behaviour of code that was not compiled with -ffast-math.
> (i.e. the low prec functions should have different name.)

Agreed.

Consensus is already set that it would be a decision that
it is fixed at compile time and never changed.

For example it would alias to a new set of entry points
that would forever have the implied semantics of roughly
constant runtime which can't be changed.

Cheers,
Carlos.