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

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*To*: eigen@xxxxxxxxxxxxxxxxxxx*Subject*: Re: [eigen] matrix exponential with c++0x*From*: Hauke Heibel <hauke.heibel@xxxxxxxxxxxxxx>*Date*: Mon, 30 Nov 2009 15:40:57 +0100*Dkim-signature*: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=C3+ClRaJUezqUXtEMB3RAsGoj59P80/H7HxZ/G728yI=; b=ejkE/t+Ybl0ad7rU1QghvBWIMHNRpAd2KTZA5nRmaC8djssk/fKZPj/e5qCP1roT2K VwHuHY0L7deKltnmuGGH43IK5O6JL/2TgKy0PN8G8LqI2hXywUp+rDTg2hqX6ID4GmBA QKN5ChVR59GmUGAuolEB225uoUnqzOwU5Joas=*Domainkey-signature*: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=YVwMuzW0IdbLgNHz3dyPa7u3gZp3piLrVuJ5omzvj6VvkBETNd64uE03wnMOMe6Ka+ 5GwJk4abLhti0f/oOdLZVVU4gCqbyx7/0y9bj94UWTavoi8g7JWq4ZIGgOk51VGOisAO jUqQ8iWWsG/aTxTi+Howm0B4X03yE6oCUBE60=

On Mon, Nov 30, 2009 at 2:37 PM, mmoll <Markus.Moll@xxxxxxxxxxxxxxxx> wrote:

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...

Regards,

Hauke

Hi

As far as I know, M_LOG2_E was never standard? (not mentioned in C++98

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

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...

Regards,

Hauke

**Follow-Ups**:**Re: [eigen] matrix exponential with c++0x***From:*Benoit Jacob

**References**:**[eigen] matrix exponential with c++0x***From:*Hauke Heibel

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

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