NAME

Data::Integer - details of the native integer data type

SYNOPSIS

        use Data::Integer qw(max_natint);

        $n = max_natint;

        # and other constants; see text

DESCRIPTION

This module is about the native integer numerical data type. A native integer is one of the types of datum that can appear in the numeric part of a Perl scalar. This module supplies constants describing the native integer type.

There are actually two native integer representations: signed and unsigned. Both are handled by this module.

CONSTANTS

natint_bits

The width, in bits, of the native integer data type.

min_natint

The minimum representable value. This is -2^(natint_bits - 1).

max_natint

The maximum representable value. This is 2^natint_bits - 1.

min_signed_natint

The minimum representable value in the signed representation. This is -2^(natint_bits - 1).

max_signed_natint

The maximum representable value in the signed representation. This is 2^(natint_bits - 1) - 1.

min_unsigned_natint

The minimum representable value in the unsigned representation. This is zero.

max_unsigned_natint

The maximum representable value in the unsigned representation. This is 2^natint_bits - 1.

SEE ALSO

Data::Float, Scalar::Number, perlnumber(1)

AUTHOR

Andrew Main (Zefram) <zefram@fysh.org>

COPYRIGHT

Copyright (C) 2007 Andrew Main (Zefram) <zefram@fysh.org>

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