NAME
    Number::Zero - make sure of the number zero

SYNOPSIS
        # Export type functions by default
        use Number::Zero;
    
        is_zero 0;        # 1
        is_zero 1326      # undef
        is_zero 'umeyuki' # undef
    
    
        # Non export interface
        use Number::Zero ();
    
        Number::Zero::is_zero 0;        # 1
        Number::Zero::is_zero 1326      # undef
        Number::Zero::is_zero 'umeyuki' # undef

    DESCRIPTION Number::Zero is very simple perl module for numeric. The
    number zero and undef are difficult to determine in Perl. If you want to
    find zero instead of undef, Number::Zero can make sure of the number
    zero.

FUNCTIONS
    There is only a function and the function is exported by default.

    If you don't want this exported functions, pass empty list to use line:

        use Nubmer::Zero ();

  is_zero
    This code returns 1 if variable is only zero.

AUTHOR
    Hiromitsu Ito <umeyuki@cpan.org>

COPYRIGHT AND LICENSE
    Copyright (c) 2012 Hiromitsu Ito. All rights reserved.

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

    The full text of the license can be found in the LICENSE file included
    with this module.