LongNums

A custom made proof-of-concept class for arbitrary precision arithmetic. <br/> Supports only integers.

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Table of Operations

<h3>Key for examples-</h3></br> Capitalised variables indicate `LongNumber` objects. Lower case variables indicate `int`s or `long`s.</br>

| Operation | Function/<br/>Operator | Example | Notes | |------------|------------------------|-------------------|-------| | Input | >> | std::cin >> X; | | | Output | << | std::cout << X; | | | Assignment | = | X = y;<br/>X = 123;<br/>X = "-112"; | Can equate with a long, LongNumber or a std::string. Will throw a InvalidInputException if it is unable to parse the string. | | Comparison | <<br/>><br/>==<br/>!= | X < Y;<br/>X > 1123;<br/>X == y;<br/>X != 0; | Can compare a LongNumber with other LongNumbers, as well as longs and std::strings. Can use combined comparisons like <= or >=. | |Addition | +<br/>+=<br/>++ | X + y;<br/>X + Y;<br/>X += Y;<br/>X++;<br/>++X;<br/> | Can add with longs as well as LongNumbers. Each notation has its standard meaning. | |Subtraction |-<br/>-=<br/>-- | X - y;<br/>X - Y;<br/>X -= Y;<br/>X--;<br/>--X;<br/> | Can subtract longs as well as LongNumbers from the LongNumber. Each notation has its standard meaning. | |Multiplication |*<br/>*=<br/> | X * y;<br/>X * Y;<br/>X *= Y; | Can multiply with longs as well as LongNumbers. Each notation has its standard meaning. | |Division |/<br/>/=<br/> | X / y;<br/>X / Y;<br/>X /= Y; | Can divide with longs as well as LongNumbers. Each notation has its standard meaning. Dividing by zero will throw a DivisionByZero exception. | |Modulo |%<br/>%= | X % y;<br/>X % Y;<br/>X %= Y;<br/> | Can find the modulus of LongNumber with longs as well as LongNumbers. Each notation has its standard meaning. Finding the modulus with 0 will throw a DivisionByZero exception. | |Absolute | absolute() | X.absolute() | Returns a LongNumber. Will not change the contents of X. | |Cast to Long | toLong() | X.toLong() | Returns a long. Does not account for overflow. |

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Exceptions

| Name | Function | |------|----------| | DivideByZeroException | Thrown when any attempt is made to divide by 0. | | InvalidInputException | Thrown when the entered string does not correspond to an integer. |