Make option to have number in full form, instead of standard form

[ghost]

Say if we did this as a calculation:

2837593480275824/5468930457689534768957689350476859760345768945076803945654*548345097438534853535

The output is 2.845127553679215e-22 as you can see, it is in standard form.

I have tried converting the answer to a string using .toString() however the output is still 2.845127553679215e-22. I want it to show the full-on value, instead of just being in standard form.

Thanks in advance.

Here's my existing code (my discord bot)

        if (!args.length) {
            return message.channel.send(`${process.env.re} You need to specify a calculation!`)
        }
        let resp;
        try {
                resp = math.evaluate(args.join(' ')).toString();
        } catch (error) {
                return message.channel.send("Invalid Calculation")
        }
        message.channel.send("", {
            embed: new Discord.RichEmbed()
            .setDescription(resp)
            .setColor(jsonColor)
        });

[josdejong]

Are you working with BigNumbers? Regular numbers have a precision of about 16 digits only.

[ghost]

Yes. It's a part of my discord bot and want all numbers to be shown in their full form

On Sat, 15 Feb 2020, 11:40 Jos de Jong, notifications@github.com wrote:

Are you working with BigNumbers? Regular numbers have a precision of about 16 digits only.

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[josdejong]

I think you're not actually working with BigNumbers that should give the following output:

math.config({ number: 'BigNumber' })
const result = math.evaluate('2837593480275824/5468930457689534768957689350476859760345768945076803945654*548345097438534853535')
console.log(result.toString())
// "2.845127553679215676780038456685211161450427105465427783234459329e-22"

BigNumbers are configured with 64 digits by default, this is configurable.

You can also look into the function format to customize how the output is formatted (instead of using .toString()).

[ghost]

Thanks, I'll try that right now

On Sat, 15 Feb 2020, 13:10 Jos de Jong, notifications@github.com wrote:

I think you're not actually working with BigNumbers that should give the following output:

math.config({ number: 'BigNumber' })const result = math.evaluate('2837593480275824/5468930457689534768957689350476859760345768945076803945654*548345097438534853535')console.log(result.toString())// "2.845127553679215676780038456685211161450427105465427783234459329e-22"

BigNumbers are configured with 64 digits by default, this is configurable.

You can also look into the function format to customize how the output is formatted (instead of using .toString()).

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[ghost]

It's just saying that it's an invalid calculation

        try {
                math.config({ number: 'BigNumber' })
                const result = math.evaluate(args.join(' '))
            message.channel.send("", {
                embed: new Discord.RichEmbed()
                .setDescription(resp.toString())
                .setColor(jsonColor)
            })
        } catch (error) {
                return message.channel.send(process.env.re + "Invalid Calculation")
        }

(when i input the same calculation as before)

[ghost]

the args.join(" ") is the same as the calculation we were doing earlier 2837593480275824/5468930457689534768957689350476859760345768945076803945654*548345097438534853535

[ghost]

just realised i made an error above, fixed it, but I keep getting this error now

Error: The global config is readonly. 
Please create a mathjs instance if you want to change the default configuration. 
Example:

  import { create, all } from 'mathjs';
  const mathjs = create(all);
  mathjs.config({ number: 'BigNumber' });

[ghost]

kk. I figured it out and got to here.

        const { create, all } = require('mathjs')
        const math = create(all);

However, even with the math.config({ number: "BigNumber" }), it still produces my result in standard form and not in its full form

[ghost]

Instead, it was 2.845127553679215676780038456685211161450427105465427783234459329e-22

[josdejong]

You can use math.format to choose a different way of formatting.

[ghost]

And format it to what? Or jsut the math.format method

On Sat, 15 Feb 2020, 18:32 Jos de Jong, notifications@github.com wrote:

You can use math.format to choose a different way of formatting.

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[josdejong]

What output would you expect instead of 2.845127553679215676780038456685211161450427105465427783234459329e-22?

[ghost]

One without the e-22. I don't want it in standard form or shortened

On Sat, 15 Feb 2020, 19:26 Jos de Jong, notifications@github.com wrote:

What output would you expect instead of 2.845127553679215676780038456685211161450427105465427783234459329e-22?

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[josdejong]

You can use math.format to do that, just read the docs and play around with it, I think you can figure it out 😄 .