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Re: newlib?: pow function can produce incorrect results.


On 4/23/07, Dave Korn wrote:
On 24 April 2007 00:53, Cary R. wrote:

> I had some more time to look into this and when the
> simple C program I mentioned earlier uses variables
> like the other program, incorrect results are
> produced. I have attached this C/C++ program. I
> certainly don't understand what is going on. I would
> have expected pow to be pass-by value which should
> make the two calls identical from a system standpoint,
> but the results imply something different. Any
> suggestions would be greatly appreciated.


The notorious PR323.

Nah, in this case it's just that gcc's __builtin_pow() is more standards-compliant than newlib's pow().

L

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