Lingua::EN::Words2Nums - convert English text to numbers
Contents
Description
This module converts English text into numbers. It supports both ordinal and cardinal numbers, negative
numbers, and very large numbers.
The main subroutine, which is exported by default, is words2nums(). This subroutine, when fed a string,
will attempt to convert it into a number. If it succeeds, the number will be returned. If it fails, it
returns undef.
Name
Lingua::EN::Words2Nums - convert English text to numbers
Notes
It does not understand decimals or fractions, yet.
Scores are supported, eg: "four score and ten". So are dozens. So is a baker's dozen. And a gross.
Various mispellings of numbers are understood.
While it handles googol correctly, googolplex is too large to fit in perl's standard scalar type, and
"inf" will be returned.
Synopsis
use Lingua::EN::Words2Nums;
$num=words2nums("two thousand and one");
$num=words2nums("twenty-second");
$num=words2nums("15 billion, 6 million, and ninteen");
Variables
There are a number of variables that can be used to tweak the behavior of this module. For example,
debugging can be be enabled by setting $Lingua::EN::Words2Nums::debug=1
$Lingua::EN::Words2Nums::debug
Default: 0. If set to a true value, outputs on standard error some useful messages if parsing fails
for some reason.
$Lingua::EN::Words2Nums::billion
Default: 10 ** 9. This is the number that will be returned for "one billion". It defaults to the
American version; the English will want to set it to 10 ** 12. Setting this number automatically
changes all the larger numbers (trillion, quadrillion, etc) to match.
