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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. |
Re^5: is_numeric
by Fletch (Chancellor) on Apr 12, 2007 at 18:40 UTC
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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.
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