Math::BigInt::Calc - phpMan

NAME
    Math::BigInt::Calc - pure Perl module to support Math::BigInt

SYNOPSIS
        # to use it with Math::BigInt
        use Math::BigInt lib => 'Calc';

        # to use it with Math::BigFloat
        use Math::BigFloat lib => 'Calc';

        # to use it with Math::BigRat
        use Math::BigRat lib => 'Calc';

        # explicitly set base length and whether to "use integer"
        use Math::BigInt::Calc base_len => 4, use_int => 1;
        use Math::BigInt lib => 'Calc';

DESCRIPTION
    Math::BigInt::Calc inherits from Math::BigInt::Lib.

    In this library, the numbers are represented interenally in base B =
    10**N, where N is the largest possible integer that does not cause
    overflow in the intermediate computations. The base B elements are
    stored in an array, with the least significant element stored in array
    element zero. There are no leading zero elements, except a single zero
    element when the number is zero. For instance, if B = 10000, the number
    1234567890 is represented internally as [7890, 3456, 12].

OPTIONS
    When the module is loaded, it computes the maximum exponent, i.e., power
    of 10, that can be used with and without "use integer" in the
    computations. The default is to use this maximum exponent. If the
    combination of the 'base_len' value and the 'use_int' value exceeds the
    maximum value, an error is thrown.

    base_len
        The base length can be specified explicitly with the 'base_len'
        option. The value must be a positive integer.

            use Math::BigInt::Calc base_len => 4;  # use 10000 as internal base

    use_int
        This option is used to specify whether "use integer" should be used
        in the internal computations. The value is interpreted as a boolean
        value, so use 0 or "" for false and anything else for true. If the
        'base_len' is not specified together with 'use_int', the current
        value for the base length is used.

            use Math::BigInt::Calc use_int => 1;   # use "use integer" internally

METHODS
    This overview constains only the methods that are specific to
    "Math::BigInt::Calc". For the other methods, see Math::BigInt::Lib.

    _base_len()
        Specify the desired base length and whether to enable "use integer"
        in the computations.

            Math::BigInt::Calc -> _base_len($base_len, $use_int);

        Note that it is better to specify the base length and whether to use
        integers as options when the module is loaded, for example like this

            use Math::BigInt::Calc base_len => 6, use_int => 1;

SEE ALSO
    Math::BigInt::Lib for a description of the API.

    Alternative libraries Math::BigInt::FastCalc, Math::BigInt::GMP,
    Math::BigInt::Pari, Math::BigInt::GMPz, and Math::BigInt::BitVect.

    Some of the modules that use these libraries Math::BigInt,
    Math::BigFloat, and Math::BigRat.

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