The Perl Cookbook suggests that the following regex will match C floats: $var =~ /^([+-]?)(?=\d|\.\d)\d*(\.\d)?([Ee]([+-]?\d+))?$/; That may be overkill for your purposes, though.

Update: (Tue Jan 8 16:03:52 UTC 2002) Removed spurious left paren (thanks, Petruchio).

In reply to Re: How to identify a number datatype in a string? by chromatic
in thread How to identify a number datatype in a string? by BBQ

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