Re: [eigen] How can we do in-place calculation for log(x)

[ Thread Index | Date Index | More lists.tuxfamily.org/eigen Archives ]

To: eigen@xxxxxxxxxxxxxxxxxxx
Subject: Re: [eigen] How can we do in-place calculation for log(x)
From: Hung Dang <hungptit@xxxxxxxxx>
Date: Tue, 4 Aug 2020 10:35:32 -0400
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to; bh=FpHHoBeibYBzlB2+liwG5WIOxEO2yPO2VPyNP9raVl4=; b=E8HlRopaDCEtDaoxbE66EkBYPqZsROTRiOP7F3ib1ChecAIn9vqKfh46tetHjvNEyp sPANEVgbxF9CmCAIHU3QX0+UNynDB+DvxRZZaPSFOqYdCu3ff2GAlN+Egk/yKPcjYXL1 NyYCLNKqj5XHI8GLqAnmvdPGFBg3eJtQLblJ3EaaQCFbRavDkqEl1ZpsghZBjZqOVNFv lHywpyxfqoEG+AgDvMWAsqUjmg7QMpiiZROTe6SJepJPPZ5+KAjbzwFEocCDS/V7Op8D jjRi637ePeQecdMm78CWQ+1F4kVeXzWltaKKE+XkI2bIvWG7RhDEmc4lsPoO0aN6/S3t +c3g==

Hi Gael,

Thank a lot for the confirmation.

Best,

Hung

On Thu, Jul 30, 2020 at 10:31 AM Gael Guennebaud <gael.guennebaud@xxxxxxxxx> wrote:

Hi,

yes, with "x = x.array().log()" the operation is done inplace, no temporary.

Gaël

On Wed, Jul 29, 2020 at 12:22 AM Hung Dang <hungptit@xxxxxxxxx> wrote:
Hi,

I need to compute x = log(x) in-place, with x can be either a vector or a matrix. This task can be done using either a simple for-loop or x = x..array().log(). The second solution is vectorized, however, I am not sure if it can be done in-place. Is there any better solution?

Regards,
Hung

Messages sorted by: [ date | thread ]
Next by Date: [eigen] 3.3.8 expected on September 7
Next by thread: [eigen] 3.3.8 expected on September 7

Mail converted by MHonArc 2.6.19+

http://listengine.tuxfamily.org/