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bits.RotateLeft32() Function in Golang with Examples
• Last Updated : 19 Apr, 2020

Go language provides inbuilt support for bits to implement bit counting and manipulation functions for the predeclared unsigned integer types with the help of bits package. This package provides RotateLeft32() function which is used to rotate a left by (k mod 32) bits and to rotate a right by k bits you need to call RotateLeft32(a, -k). To access the RotateLeft32() function you need to add a math/bits package in your program with the help of the import keyword.

Syntax:

`func RotateLeft32(a uint32, k int) uint32`

Parameters: This function takes two parameter i.e., a of uint32 type and k of int type.

Return Value: This function return the rotated(either left or right) value of uint32 type.

Example 1 :

 `// Golang program to illustrate bits.RotateLeft32() Function``package main`` ` `import (``    ``"fmt"``    ``"math/bits"``)`` ` `// Main function``func main() {`` ` `    ``// Using RotateLeft32() function``    ``var a uint32 = 6``    ``b := bits.RotateLeft32(a, 5)``    ``fmt.Printf(``"Original: %b"``, a)``    ``fmt.Printf(``"\nAfter Rotation(Left): %b"``, b)`` ` `}`

Output:

```Original: 110
After Rotation(Left): 11000000
```

Example 2:

 `// Golang program to illustrate bits.RotateLeft32() Function``package main`` ` `import (``    ``"fmt"``    ``"math/bits"``)`` ` `// Main function``func main() {`` ` `    ``// Using RotateLeft32() function``    ``var a uint32 = 5``    ``b := bits.RotateLeft32(a, -1)``    ``fmt.Printf(``"Original: %b"``, a)``    ``fmt.Printf(``"\nAfter Rotation(Right): %b"``, b)`` ` `}`

Output:

```Original: 101
After Rotation(Right): 10000000000000000000000000000010
```

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