NAME
    Parv::Util::Regex::Number - Regular expressions methods related to
    numbers

SYNOPSIS
      use Parv::Util::Regex::Number;

      $urn = Parv::Util::Regex::Number->make();

      print $urn->if_decimal(90);  #  prints 0
      print $urn->if_number(90);   #  prints 1

      $int_re = $urn->integer_regex();  # regex to match integer

DESCRIPTION
    Parv::Util::Regex::Number, 0.00, is OO module. There is only a
    constructor, and no cloner/copier.

    Numbers are assumed to have dot, '.', as the separator between integer
    and fraction parts, unless a string is provided via constructor "make()"
    or dedicated method "decimal_char()".

    This module will recognize a given value as a number in following
    formats only...

    Plain:
      19 , 19. , 19.9

    Exponent'd:
      19e1 , 19.0e-3 , 19.9E3.5

    Perl style:
      1_9 , 19.0_e1_00 , 19_00E-0.2_5

INTERFACE
    make() -- Constructor

      *Input*:
          Optional integer and fraction part separator string; default is
          '.'.

      *Output*:
          Parv::Util::Regex::Number object

    decimal_char() -- bi mode function, depending on input

      Mode A

          *Input*:
                Nothing

          *Output*:
                Integer and fraction part separator string

      Mode B

          *Input*:
                Integer and fraction part separator string; default is '.'.

          *Output*:
                Adjusted object

    integer_regex()

      *Input*:
          Nothing

      *Output*:
          Regex to match integer

    decimal_regex()

      *Input*:
          Nothing

      *Output*:
          Regex to match decimal number

    number_regex()

      *Input*:
          Nothing

      *Output*:
          Regex to match a number

    if_integer()

      *Input*:
          Integer to be matched

      *Output*:
          1 if matched, else 0

    if_decimal()

      *Input*:
          Decimal number to be matched

      *Output*:
          1 if matched, else 0

    if_number()

      *Input*:
          Number to be matched

      *Output*:
          1 if matched, else 0