SWI-Prolog : "safe" atom_number?

From: "roschler" <robert.oschler@xxxxxxxxx>
Date: 4 Oct 2006 08:57:54 -0700

I want to be able to call atom_number/2 in a manner that does not
disrupt program flow if the term being converted is not a number.
Currently, calling atom_number/2 with a non-numeric term generates a
syntax error.

I tried wrapping atom_number/2 in a catch() statement, but the syntax
error is still generated. I want the call to simply fail if I pass a
non-numeric quantity.

How can I do this?

Thanks.

.

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Re: SWI-Prolog : "safe" atom_number?
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