Re^4: is_numeric

in reply to Re^3: is_numeric
in thread is_numeric

It used to use strtod, but doesn't any more. The C99 standard pulled the rug out from under everyone by changing e.g. "0x10" from being 0 (in C89) to being 16.

Comment on Re^4: is_numeric

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Re^5: is_numeric by Fletch (Bishop) on Apr 12, 2007 at 18:40 UTC
Ooop, you're quite right. Perhaps perldata shouldn't mention `strtod` as a way to check for numerical-ness then. Of course if you're getting hex numbers as strings you're going to need to convert them (through `POSIX::strtod` or hex) anyhow before they're interpreted as the correct value so maybe it's kind of a corner case. Good point though.	[reply]

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