Python decimal module for pyboard micro python

C programming, build, interpreter/VM.
Target audience: MicroPython Developers.
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MarkHaysHarris777
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Python decimal module for pyboard micro python

Post by MarkHaysHarris777 » Sat May 02, 2015 8:08 am

Greetings, I have read the contributor guidelines for micro python, and I think I get it; that is just as a preface for my inquiry. At this point I don't have enough core knowledge to recommend changes of *any* kind to micro python. But I do know that I want to import the C decimal module (C Python 3) for my project with micro python ( I need arbitrary precision scientific maths, and I want to use my own pdeclib, which relies on the C decimal module).

So, basically, I am wanting to know what I need to do to get the decimal module 'ported' to micro python. Has this been done and available for add-on or plug-in from a repository, or would I need to compile the sources (port it myself) ? Has anyone else thought about this, and is anyone else working on it?

TIA

PS I am having a 'blast' with my pyboard... just brilliant !
Cheers,
marcus
:)

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dhylands
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Re: Python decimal module for pyboard micro python

Post by dhylands » Sat May 02, 2015 4:29 pm

I'm not aware of anybody having ported that library to micropython.

micropython already supports arbitrary precision integers, and supports 32-bit floats.

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pythoncoder
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Re: Python decimal module for pyboard micro python

Post by pythoncoder » Sun May 03, 2015 7:34 am

@MarkHaysHarris777 In the context of microcontroller applications it's a rather specialist requirement so I fear you may have to DIY.
Peter Hinch

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MarkHaysHarris777
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Re: Python decimal module for pyboard micro python

Post by MarkHaysHarris777 » Fri May 08, 2015 9:34 pm

Thanks guys, for the replies; DIY is ok, and I'm pumped about it (on the back burner), I just thought someone else may have tackled it, and I'm less about reinventing the decimal bignums if I don't have to. Thanks again.
Cheers,
marcus
:)

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kamikaze
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Re: Python decimal module for pyboard micro python

Post by kamikaze » Tue Jan 24, 2017 2:18 pm

I'm going to work with GPS coordinates. Float numbers do not look quiet precise. So if there is no Decimal implemented... is it a good idea to use Integer?

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deshipu
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Re: Python decimal module for pyboard micro python

Post by deshipu » Tue Jan 24, 2017 2:47 pm

I think so. MicroPython's integer can be arbitrarily large (as long as you have the memory), so you can scale them to the resolution you need.

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