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Re: Re: Modify machine precision
From: |
Jordi Gutiérrez Hermoso |
Subject: |
Re: Re: Modify machine precision |
Date: |
Thu, 29 Mar 2012 10:09:12 -0400 |
2012/3/29 alberto frigerio <address@hidden>:
> So you are telling me that in Octave there is no way to force machine
> precision in a program? My problem is that I'm doing some analyses with
> another precision whose machine precision is 1e-13
Listen to what you just said. Programs have different *machine*
precision? The *machine* precision isn't determined by software, but
it's a property of your hardware, of your *machine*. Your computer has
an FPU, and this FPU has certain limitations:
http://en.wikipedia.org/wiki/Floating-point_unit
If you need variable precision arithmetic, you can try to use vpa from
the symbolic package, but depending on what you're doing, I would
follow Martin Helm's recommendation and use a program other than
Octave.
HTH,
- Jordi G. H.
- Modify machine precision, AlbFrigerio, 2012/03/28
- Re: Modify machine precision, Jordi Gutiérrez Hermoso, 2012/03/28
- Message not available
- R: Re: Modify machine precision, alberto frigerio, 2012/03/29
- Re: R: Re: Modify machine precision, Martin Helm, 2012/03/29
- Re: Re: Modify machine precision,
Jordi Gutiérrez Hermoso <=
- Re: Re: Modify machine precision, Nicholas Jankowski, 2012/03/29
- Message not available
- Message not available
- R: Re: Re: Modify machine precision, alberto frigerio, 2012/03/29
- R: Re: Re: Modify machine precision, John W. Eaton, 2012/03/29
- Re: Re: Re: Modify machine precision, Jordi Gutiérrez Hermoso, 2012/03/29
- R: Re: Re: Re: Modify machine precision, alberto frigerio, 2012/03/29