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Is there any procedure similar with atof(), but to consider scaling factor?

marcelpreda over 7 years ago

Hi there,

Is there any procedure similar with atof() but to consider the scaling factors (u, m, k, M, G...)

I'm reading some data from text files, and where are floating numbers there could be also scaling/multiplicity factor.

Using atof() is ignoring the scaling factor, the only solution seems to be evalstring(). But I don't like it too much , because I don't know what other code could be executed.

So, is there something similar with atof(), but to consider those scaling factors?

What I mean:

numAsStr = "1.7m"

atof(numAsStr) => 1.7

evalstring(numAsStr) => 0.0017

BR,

Marcel

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Andrew Beckett over 7 years ago

Marcel,

cdfParseFloatString() is a good choice for this.

I'm happy that you don't like using evalstring for this - that's certainly bad practice, as you might unwittingly execute all sorts of code accidentally. I always give the example of a user accidentally entering "exit()" in a field that ends up being evaluated using evalstring...

Regards,

Andrew.
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marcelpreda over 7 years ago in reply to Andrew Beckett

Thank you.

Just tested, it works.

Next question: cdfParseFloatString() is available by default, or a certain context has to be loaded ?

Best Regards,

Marcel
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marcelpreda over 7 years ago in reply to Andrew Beckett

Thank you.

Just tested, it works.

Next question: cdfParseFloatString() is available by default, or a certain context has to be loaded ?

Best Regards,

Marcel
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Andrew Beckett over 7 years ago in reply to marcelpreda

Hi Marcel,

It's a pcell-safe function (so that means you can use it in all executables, including dbAccess. Not in the "skill" executable though, but I doubt that matters!). Also it's a binary function, so doesn't require a context to be loaded.

Regards,

Andrew
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