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Bill Allombert on Thu, 18 Jan 2024 23:42:32 +0100
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Re: print() does output numbers in scientific notation violating JSON number spec
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- To: pari-dev@pari.math.u-bordeaux.fr
- Subject: Re: print() does output numbers in scientific notation violating JSON number spec
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Thu, 18 Jan 2024 23:42:04 +0100
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- In-reply-to: <2d45d7370dc9943ba5d32f6ec843691b@stamm-wilbrandt.de>
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- References: <2d45d7370dc9943ba5d32f6ec843691b@stamm-wilbrandt.de>
On Thu, Jan 18, 2024 at 11:09:49PM +0100, hermann@stamm-wilbrandt.de wrote:
> From latest JSON rfc:
>
> ? version
> %2 = [2, 15, 4]
> ? print(0.00001)
> 1.0000000000000000000000000000000000000 E-5
> ?
>
> I use PARI/GP to write a JSON file, that is read by JavaScript/nodejs.
> And that errors out on reading above number.
> If I manually remove the space, "1.0000000000000000000000000000000000000E-5"
> can be processed easily.
You can do
default(output,0)
(\o0)
? \o0
? print(0.00001)
1.0000000000000000000000000000000000000E-5
> Is there an option to make PARI/GP produce "0.00001" as output instead of
> scientific representation?
? printf("%f",0.000000000000000000001)
0.0000000000000000000010000000000000000000000000000000000000
or even
? default(format,"f.38")
? print(0.00001)
0.000010000000000000000000000000000000000000
Cheers,
Bill