Tanh()

The Tanh() function returns the hyperbolic tangent of a given number.

Syntax

import "math"

result := math.Tanh(number)

Tanh() accepts an argument, number, of type float64 and returns a value of type float64.

Special cases:

• The result of Tanh(math.Inf(-1)) is -1. math.Inf(-1) represents negative infinity, which is -Inf.
• The result of Tanh(math.Inf(+1)) is +1. math.Inf(+1) represents positive infinity, which is +Inf.
• The result of Tanh(0) is 0.
• The result of Tanh(NaN) is NaN.

Example

The following calculates the hyperbolic tangent of 0.5 and prints out the result:

package main

import (
  "fmt"
  "math"
)

func main() {
  value := math.Tanh(0.5)
  fmt.Printf("%.2f\n", value)
}

The output will be:

0.46

Codebyte

The following example is runnable and shows the Tanh() function handling the value 1.

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