About xdecimal

About xdecimal

[Jairo A. del Rio]

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Hi, list.

I've tried using the xdecimal library included with LuaMetaTeX and I have
some remarks:

1. Shifts are decimal, not binary: 145 >> 1 gives 14.
2. Integer division (//) is not implemented. Is that by design?
3. Following 2, what would be the way to handle integer division,
remainder... for large numbers?

Thank you in advance.

Best regards,

Jairo

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Re: About xdecimal

[Hans Hagen]

On 12/28/2020 2:33 PM, Jairo A. del Rio wrote:
> Hi, list.
> 
> I've tried using the xdecimal library included with LuaMetaTeX and I 
> have some remarks:
> 
> 1. Shifts are decimal, not binary: 145 >> 1 gives 14.

this is how decnumber defines shift: digits

> 2. Integer division (//) is not implemented. Is that by design?

i'll add that one

> 3. Following 2, what would be the way to handle integer division, 
> remainder... for large numbers?

i'll add a % b

> Thank you in advance.
better first do the testing

Hans

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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Re: About xdecimal

[Jairo A. del Rio]

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I forgot to mention ceil and floor, just in case they can be implemented. I
have a long list of examples, so testing will be easy. Thank you very much.

Best regards,

Jairo :)

El lun, 28 de dic. de 2020 a la(s) 10:39, Hans Hagen (j.hagen@xs4all.nl)
escribió:

> On 12/28/2020 2:33 PM, Jairo A. del Rio wrote:
> > Hi, list.
> >
> > I've tried using the xdecimal library included with LuaMetaTeX and I
> > have some remarks:
> >
> > 1. Shifts are decimal, not binary: 145 >> 1 gives 14.
>
> this is how decnumber defines shift: digits
>
> > 2. Integer division (//) is not implemented. Is that by design?
>
> i'll add that one
>
> > 3. Following 2, what would be the way to handle integer division,
> > remainder... for large numbers?
>
> i'll add a % b
>
> > Thank you in advance.
> better first do the testing
>
> Hans
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>

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Re: About xdecimal

[Hans Hagen]

On 12/28/2020 4:46 PM, Jairo A. del Rio wrote:
> I forgot to mention ceil and floor, just in case they can be 
> implemented. I have a long list of examples, so testing will be easy. 
afaiks these two have no implementors

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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