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README  view on Meta::CPAN

    "check_digit_rff: 1 secs ( 1.29 usr 0.00 sys) 77.52/s"

    So, it's 35x to 53x faster than the original pure Perl module, depending
    on how much compatibility with the original module you need.

    The rest of the documentation is mostly a copy of the original docs,
    with some additions for functions that are new.

    This module calculates the Modulus 10 Double Add Double checksum, also
    known as the LUHN Formula. This algorithm is used to verify credit card
    numbers and Standard & Poor's security identifiers such as CUSIP's and
    CSIN's.

    You can find plenty of information about the algorithm by searching the
    web for "modulus 10 double add double".

FUNCTION
    is_valid CHECKSUMMED_NUM
        This function takes a credit-card number and returns true if the
        number passes the LUHN check.

README.md  view on Meta::CPAN

`check_digit_rff:  1 secs ( 1.29 usr 0.00 sys) 77.52/s`

So, it's 35x to 53x faster than the original pure Perl module, depending on
how much compatibility with the original module you need.  

The rest of the documentation is mostly a copy of the original docs, with some
additions for functions that are new.

This module calculates the Modulus 10 Double Add Double checksum, also known as
the LUHN Formula. This algorithm is used to verify credit card numbers and
Standard & Poor's security identifiers such as CUSIP's and CSIN's.

You can find plenty of information about the algorithm by searching the web for
"modulus 10 double add double".

# FUNCTION

- is\_valid CHECKSUMMED\_NUM

    This function takes a credit-card number and returns true if

lib/Algorithm/LUHN_XS.pm  view on Meta::CPAN

C<check_digit_rff:  1 secs ( 1.29 usr 0.00 sys) 77.52/s>

So, it's 35x to 53x faster than the original pure Perl module, depending on
how much compatibility with the original module you need.  

The rest of the documentation is mostly a copy of the original docs, with some
additions for functions that are new.

This module calculates the Modulus 10 Double Add Double checksum, also known as
the LUHN Formula. This algorithm is used to verify credit card numbers and
Standard & Poor's security identifiers such as CUSIP's and CSIN's.

You can find plenty of information about the algorithm by searching the web for
"modulus 10 double add double".

=head1 FUNCTION

=over 4

=cut