Re: [eigen] matrix exponential with c++0x

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2009/11/30 Hauke Heibel <hauke.heibel@xxxxxxxxxxxxxx>:
> On Mon, Nov 30, 2009 at 2:37 PM, mmoll <Markus.Moll@xxxxxxxxxxxxxxxx> wrote:
>> Hi
>> Quoting Hauke Heibel <hauke.heibel@xxxxxxxxxxxxxx>:
>> > First, M_LOG2_E suddenly was not defined anymore so I added
>> >
>> > #if defined(log2) && !defined(M_LOG2_E)
>> >   #define M_LOG2_E 0.693147180559945309417
>> > #endif
>> As far as I know, M_LOG2_E was never standard? (not mentioned in C++98
>> or C99)
> Can you cite the exact draft and versions you have been looking at? I cannot
> even find M_PI.
> I was just looking since I found M_PIl (the last letter is an L for long) in
> one of our tests and as with M_LOG2_E it is not defined over here...

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