e_pow and reentrancy

[Ulrich Drepper]

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Simon Gee wrote:

> After a bit of tracking and experimentation with pthread_mutexes around 
> the call to pow(), it seems the cause of the problem lies in 
> sysdeps/ieee754/dbl-64/e_pow.c and, more specifically, two52 - a global 
> variable that is set within log1() and log2().

Yes, and your patch looks fine.  None of the often used platforms uses 
this code so nobody noticed.  Thanks,

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