Finding Base-2 Exponential of a Number in Golang
Last Updated :
01 Apr, 2020
Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You are allowed to find base-2 exponential, i.e., 2**a of the specified number with the help of Exp2() function provided by the math package. So, you need to add a math package in your program with the help of the import keyword to access Exp2() function.
Syntax:
func Exp2(a float64) float64
- If you pass +Inf in this function, then this function will return +Inf.
- If you pass NaN in this function, then this function will return NaN.
Example 1:
package main
import (
"fmt"
"math"
)
func main() {
res_1 := math.Exp2(3)
res_2 := math.Exp2(-1)
res_3 := math.Exp2(math.Inf(1))
res_4 := math.Exp2(math.NaN())
fmt.Printf( "Result 1: %.1f" , res_1)
fmt.Printf( "\nResult 2: %.1f" , res_2)
fmt.Printf( "\nResult 3: %.1f" , res_3)
fmt.Printf( "\nResult 4: %.1f" , res_4)
}
|
Output:
Result 1: 8.0
Result 2: 0.5
Result 3: +Inf
Result 4: NaN
Example 2:
package main
import (
"fmt"
"math"
)
func main() {
nvalue_1 := math.Exp2(7.3)
nvalue_2 := math.Exp2(-3)
res := nvalue_1 + nvalue_2
fmt.Printf( "%.1f + %.1f = %.1f" ,
nvalue_1, nvalue_2, res)
}
|
Output:
157.6 + 0.1 = 157.7
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