Re: [eigen] Matrix2i mean

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To: <eigen@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [eigen] Matrix2i mean
From: Stewart Martin-Haugh <stewart.martin-haugh@xxxxxxx>
Date: Tue, 5 Nov 2019 15:49:58 +0000
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Hi,

You could potentially use SafeInt as your custom scalar type:

https://github.com/dcleblanc/SafeInt/blob/master/SafeInt.hpp

(with a performance penalty) then you should be safe from these issues.

Cheers,

Stewart

On Tue, 5 Nov 2019 at 15:46, Peter <list@xxxxxxxxxxxxxxxxx> wrote:

Dear Christoph,

Am 05.11.19 um 16:36 schrieb Christoph Hertzberg:

> You could create your own custom type `my_int16` for which `my_int16 * my_int16` results in a `my_int32` (this needs to be told to Eigen, similar to how real*complex products are handled).

This could indeed be a way.
BTW, I was thinking in the spirit of exact scalar products for floating points like in C-XSC.
Maybe an option for Eigen 7.0.

Best regards,
Peter

References:
- [eigen] Matrix2i mean
  - From: Petr Kubánek
- Re: [eigen] Matrix2i mean
  - From: Peter
- Re: [eigen] Matrix2i mean
  - From: Christoph Hertzberg
- Re: [eigen] Matrix2i mean
  - From: Peter
- Re: [eigen] Matrix2i mean
  - From: Christoph Hertzberg
- Re: [eigen] Matrix2i mean
  - From: Peter

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