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Re: What x86_64-pc-linux-gnu is?

From: Mike Miller
Subject: Re: What x86_64-pc-linux-gnu is?
Date: Wed, 19 Sep 2018 14:22:58 -0700
User-agent: Mutt/1.10.1 (2018-07-13)

On Wed, Sep 19, 2018 at 14:15:58 -0500, Leloup wrote:
> Difference is around 2. Normally, that should be either 9223372036854775806
> or 9223372036854775808.

That's correct, my 'sizemax' returns 2**63 - 2.

> >> sizemax
> ans = 2147483646
> >> log2(2147483646)
> ans =  30.9999999986564  ~ 31 for 32bits

That's correct, your 'sizemax' returns 2**31 - 2.

> So your PC correctly works with 64bits while mine with 32bits. So, something
> is wrong for my PC.

No, not necessarily. These are both valid and correct answers, the value
depends on the version of Octave and how it was configured.

You initially asked what the symbol "x86_64" means, and I suggested
looking at the return value of 'sizemax' to additionally determine the
range of indexing. I was guessing at what you meant by the qualifier

Are you now asking how to install a version of Octave that supports
arrays with 64 bit indexes? Are you sure that you need that?


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