novaBBS - comp.lang.forth - Calculating exp without multiplication

Calculating exp without multiplication

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From: how...@inventio.co.uk (Howerd Oakford)
Newsgroups: comp.lang.forth
Subject: Calculating exp without multiplication
Date: Sun, 27 Feb 2022 19:04:58 +0100
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by: Howerd Oakford - Sun, 27 Feb 2022 18:04 UTC

Re: Calculating exp without multiplication

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From: clf...@8th-dev.com (Ron AARON)
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Subject: Re: Calculating exp without multiplication
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by: Ron AARON - Mon, 28 Feb 2022 04:56 UTC

Re: Calculating exp without multiplication

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Subject: Re: Calculating exp without multiplication
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by: minf...@arcor.de - Mon, 28 Feb 2022 08:48 UTC

Re: Calculating exp without multiplication

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Subject: Re: Calculating exp without multiplication
From: the.beez...@gmail.com (Hans Bezemer)
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by: Hans Bezemer - Mon, 28 Feb 2022 11:15 UTC

On Monday, February 28, 2022 at 5:56:20 AM UTC+1, Ron AARON wrote:
> Interesting, thanks!

Been there, done that. Note that this code is targeted for 4tH. **Alle Angaben ohne Gewaehr**
https://sourceforge.net/p/forth-4th/code/HEAD/tree/trunk/4th.src/lib/fxexpln.4th

I used it in low precision (but fast) FLN and FEXP, and built it upon Leo Brodies 14-bit fractional libraries, like this:
https://sourceforge.net/p/forth-4th/code/HEAD/tree/trunk/4th.src/apps/basic/fraction.bas

Which was applied here: https://sourceforge.net/p/forth-4th/code/HEAD/tree/trunk/4th.src/g3igraph.4th

Hans Bezemer

Re: Calculating exp without multiplication

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Subject: Re: Calculating exp without multiplication
From: mhx...@iae.nl (Marcel Hendrix)
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by: Marcel Hendrix - Mon, 28 Feb 2022 11:17 UTC

On Sunday, February 27, 2022 at 7:05:00 PM UTC+1, Howerd wrote:
> https://www.quinapalus.com/efunc.html

Before doing something rash, better look here first:

H. Mahdavi and S. Timarchi, "Improving Architectures of Binary Signed-Digit CORDIC With Generic/Specific Initial Angles," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 67, no. 7, pp. 2297-2304, July 2020, doi: 10.1109/TCSI.2020.2978765.

-marcel

Re: Calculating exp without multiplication

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Subject: Re: Calculating exp without multiplication
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by: Hans Bezemer - Mon, 28 Feb 2022 11:32 UTC

On Monday, February 28, 2022 at 12:17:55 PM UTC+1, Marcel Hendrix wrote:
> On Sunday, February 27, 2022 at 7:05:00 PM UTC+1, Howerd wrote:
> H. Mahdavi and S. Timarchi, "Improving Architectures of Binary Signed-Digit CORDIC With Generic/Specific Initial Angles," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 67, no. 7, pp. 2297-2304, July 2020, doi: 10.1109/TCSI.2020.2978765.

Some wells seem to have been poisoned - I get this on the DOI: "SimConcept: A Hybrid Approach for Simplifying Composite Named Entities in Biomedical Text - Chih-Hsuan Wei, Robert Leaman, and Zhiyong Lu"

Re: Calculating exp without multiplication

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by: Jan Coombs - Mon, 28 Feb 2022 14:20 UTC

On Mon, 28 Feb 2022 03:32:21 -0800 (PST)
Hans Bezemer <the.beez.speaks@gmail.com> wrote:

> On Monday, February 28, 2022 at 12:17:55 PM UTC+1, Marcel Hendrix wrote:
> > On Sunday, February 27, 2022 at 7:05:00 PM UTC+1, Howerd wrote:
> > H. Mahdavi and S. Timarchi, "Improving Architectures of Binary Signed-Digit CORDIC With Generic/Specific Initial Angles," in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 67, no. 7, pp. 2297-2304, July 2020, doi: 10.1109/TCSI.2020.2978765.
>
> Some wells seem to have been poisoned - I get this on the DOI: "SimConcept: A Hybrid Approach for Simplifying Composite Named Entities in Biomedical Text - Chih-Hsuan Wei, Robert Leaman, and Zhiyong Lu"
>
> HB

https://ieeexplore.ieee.org/document/9034487 need$$s

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Subject: Re: Calculating exp without multiplication
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by: Hans Bezemer - Mon, 28 Feb 2022 23:08 UTC

"Ada is PL/I trying to be Smalltalk. -- Codoso diBlini

devel / comp.lang.forth / Calculating exp without multiplication

Subject	Author
Calculating exp without multiplication	Howerd Oakford
Re: Calculating exp without multiplication	Ron AARON
Re: Calculating exp without multiplication	Hans Bezemer
Re: Calculating exp without multiplication	minf...@arcor.de
Re: Calculating exp without multiplication	Marcel Hendrix
Re: Calculating exp without multiplication	Hans Bezemer
Re: Calculating exp without multiplication	Jan Coombs
Re: Calculating exp without multiplication	Hans Bezemer