1Math::BigInt::Calc(3) User Contributed Perl DocumentationMath::BigInt::Calc(3)
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NAME

6       Math::BigInt::Calc - pure Perl module to support Math::BigInt
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SYNOPSIS

9           # to use it with Math::BigInt
10           use Math::BigInt lib => 'Calc';
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12           # to use it with Math::BigFloat
13           use Math::BigFloat lib => 'Calc';
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15           # to use it with Math::BigRat
16           use Math::BigRat lib => 'Calc';
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18           # explicitly set base length and whether to "use integer"
19           use Math::BigInt::Calc base_len => 4, use_int => 1;
20           use Math::BigInt lib => 'Calc';
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DESCRIPTION

23       Math::BigInt::Calc inherits from Math::BigInt::Lib.
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25       In this library, the numbers are represented interenally in base B =
26       10**N, where N is the largest possible integer that does not cause
27       overflow in the intermediate computations. The base B elements are
28       stored in an array, with the least significant element stored in array
29       element zero. There are no leading zero elements, except a single zero
30       element when the number is zero. For instance, if B = 10000, the number
31       1234567890 is represented internally as [7890, 3456, 12].
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OPTIONS

34       When the module is loaded, it computes the maximum exponent, i.e.,
35       power of 10, that can be used with and without "use integer" in the
36       computations. The default is to use this maximum exponent. If the
37       combination of the 'base_len' value and the 'use_int' value exceeds the
38       maximum value, an error is thrown.
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40       base_len
41           The base length can be specified explicitly with the 'base_len'
42           option. The value must be a positive integer.
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44               use Math::BigInt::Calc base_len => 4;  # use 10000 as internal base
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46       use_int
47           This option is used to specify whether "use integer" should be used
48           in the internal computations. The value is interpreted as a boolean
49           value, so use 0 or "" for false and anything else for true. If the
50           'base_len' is not specified together with 'use_int', the current
51           value for the base length is used.
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53               use Math::BigInt::Calc use_int => 1;   # use "use integer" internally
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METHODS

56       This overview constains only the methods that are specific to
57       "Math::BigInt::Calc". For the other methods, see Math::BigInt::Lib.
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59       _base_len()
60           Specify the desired base length and whether to enable "use integer"
61           in the computations.
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63               Math::BigInt::Calc -> _base_len($base_len, $use_int);
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65           Note that it is better to specify the base length and whether to
66           use integers as options when the module is loaded, for example like
67           this
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69               use Math::BigInt::Calc base_len => 6, use_int => 1;
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SEE ALSO

72       Math::BigInt::Lib for a description of the API.
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74       Alternative libraries Math::BigInt::FastCalc, Math::BigInt::GMP,
75       Math::BigInt::Pari, Math::BigInt::GMPz, and Math::BigInt::BitVect.
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77       Some of the modules that use these libraries Math::BigInt,
78       Math::BigFloat, and Math::BigRat.
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82perl v5.36.1                      2023-07-17             Math::BigInt::Calc(3)
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