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bits.Sub() Function in Golang with Examples
• Last Updated : 28 Apr, 2020

The bits.Sub() Function in Golang is used to find the difference of a, b and borrow, i.e. diff = a – b – borrow. Here the borrow must be 0 or 1; otherwise, the behavior is undefined. To access this function, one needs to imports the math/bits package in the program. The return value of the borrowOutput will be always 0 or 1 in any case.

Syntax:

```func Sub(a, b, borrow uint) (diff, borrowOut uint)
```

Parameters: This function takes three parameters of uint type, i.e., a, b, and borrow. The value of borrow parameter is either 1 or 0

Return Value: This function return two values of uint type, i.e., diff and borrowOut. Here diff contains the result of a – b – borrow and borrowOut is either 1 or 0.

Example 1:

 `// Golang program to illustrate bits.Sub() Function ``package main ``   ` `import ( ``    ``"fmt"``    ``"math/bits"``) ``   ` `// Main function ``func main() { ``   ` `    ``// Finding diff and borrowOu ``    ``// of the specified numbers ``    ``// Using Sub() function ``    ``nvalue_1, borrowOut := bits.Sub(4, 3, 0) ``    ``fmt.Println(``"Diff:"``, nvalue_1) ``    ``fmt.Println(``"BorrowOut :"``, borrowOut ) ``   ` `} `

Output:

```Diff: 1
BorrowOut : 0
```

Example 2:

 `// Golang program to illustrate bits.Sub() Function``package main`` ` `import (``    ``"fmt"``    ``"math/bits"``)`` ` `// Main function``func main() {`` ` `    ``// Finding diff and borrowOut``    ``// of the specified numbers``    ``// Using Sub() function`` ` `    ``var a, b, borrow uint = 10, 5, 1``    ``Diff, borrowOut := bits.Sub(a, b, borrow)``    ``fmt.Println(``"Number 1:"``, a)``    ``fmt.Println(``"Number 2:"``, b)``    ``fmt.Println(``"Borrow :"``, borrow)``    ``fmt.Println(``"Diff:"``, Diff)``    ``fmt.Println(``"BorrowOut :"``, borrowOut)`` ` `}`

Output:

```Number 1: 10
Number 2: 5
Borrow : 1
Diff: 4
BorrowOut : 0
```
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