Bug 501 – Suppress mat/scalar aggressive optimization

Bug 501 - Suppress mat/scalar aggressive optimization


Summary:	Suppress mat/scalar aggressive optimization

Status:	RESOLVED FIXED

Product:	Eigen
Classification:	Unclassified
Component:	Core - general
Version:	unspecified
Platform:	All All

Importance:	Normal normal
Assigned To:	Nobody

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Reported:	2012-08-22 11:09 UTC by Gael Guennebaud
Modified:	2012-09-08 11:53 UTC (History)
CC List:	2 users (show)

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Description Gael Guennebaud 2012-08-22 11:09:37 UTC

Currently, mat/scalar or mat/=scalar are optimized as mat*(1/scalar) and mat *=
(1/scalar) for non integer scalar types. This might result in invalid result in
some borderline cases, as in:

http://forum.kde.org/viewtopic.php?f=74&t=107358

Proposal: remove this optimization and leave it to the user.

Comment 1 Gael Guennebaud 2012-09-08 11:53:41 UTC

https://bitbucket.org/eigen/eigen/changeset/93c59c59807e/
changeset:   93c59c59807e
user:        ggael
date:        2012-09-08 11:52:03
summary:     fix bug 501: remove aggressive mat/scalar optimization (was
replaced by mat*(1/scalar) for non integer types)

https://bitbucket.org/eigen/eigen/changeset/11b65f0601c4/
changeset:   11b65f0601c4
branch:      3.1

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