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bits.Mul() Function in Golang with Examples
  • Last Updated : 28 Apr, 2020
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bits.Mul() Function in Golang is used to find the full-width product of x and y. The execution time of this function does not depend on the inputs. To access this function, one needs to imports the math/bits package in the program.

Syntax:

func Mul(x, y uint) (hi, lo uint)

Parameters: This function takes two parameter of uint type, i.e., x, y.

Note: (hi, lo) = x * y
Here, hi is the product bits’ upper half and, lo is the lower half returned.

Return Value: This function returns the full-width product of x and y.



Example 1:




// Golang program to illustrate
// bits.Mul() Function
package main
  
import (
    "fmt"
    "math/bits"
)
  
// Main function
func main() {
  
    // Using Mul() function
    hi, lo := bits.Mul(5, 10)
    fmt.Println("Full-width product of x and y : ", hi, lo)
  
}

Output:

Full-width product of x and y :  0 50

Example 2:




// Golang program to illustrate 
// bits.Mul() Function 
package main 
     
import ( 
    "fmt"
    "math/bits"
     
// Main function 
func main() { 
     
    // Using Mul() function 
    const a, b = 34, 56
    hi, lo  := bits.Mul(a, b) 
    fmt.Println("Number 1:", a) 
    fmt.Println("Number 2:", b) 
    fmt.Println("Upper half:", hi) 
    fmt.Println("Lower half:", lo)  
     
}

Output:

Number 1: 34
Number 2: 56
Upper half: 0
Lower half: 1904

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