Programming Language: Golang

Namespace/Package Name: math/big

Class/Type: Int

Examples at hotexamples.com: 30

The `go math/big` package is a library that provides arbitrary-precision arithmetic for integers and floating-point numbers. It is often used in cryptography, scientific computing, and other areas where precision is crucial.

Here are some examples of using `go math/big`:

**Example 1:** Adding two big integers together

This code creates two big integers `a` and `b`, each with a value of over 100 million. It then creates a new big integer `c` and adds `a` and `b` together, storing the result in `c`. Finally, it prints out the value of `c`.

**Example 2:** Computing the factorial of a large integer

Here are some examples of using `go math/big`:

package main import ( "fmt" "math/big" ) func main() { a := big.NewInt(123456789) b := big.NewInt(987654321) c := big.NewInt(0) c.Add(a, b) fmt.Println(c) }

This code creates two big integers `a` and `b`, each with a value of over 100 million. It then creates a new big integer `c` and adds `a` and `b` together, storing the result in `c`. Finally, it prints out the value of `c`.

package main import ( "fmt" "math/big" ) func factorial(n int64) *big.Int { if n == 0 { return big.NewInt(1) } bigN := big.NewInt(n) return bigN.Mul(bigN, factorial(n-1)) } func main() { fmt.Println(factorial(100)) }This code defines a function `factorial` that computes the factorial of a given integer using arbitrary-precision arithmetic. It uses a recursive algorithm to multiply the current integer by the factorial of the previous integer. The `main` function calls `factorial` with a value of 100, which is a very large number. The result is printed out using the `fmt.Println` function. In conclusion, `go math/big` is a package library in Go language that provides arbitrary-precision arithmetic for integers and floating-point numbers. It is used in tasks requiring precise computations, such as cryptography and scientific computing.

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Frequently Used Methods

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