Copysign()

The Copysign() of the math package is an inbuilt function that returns a value based on the magnitude of the first argument and the sign of the second argument.

Syntax

import "math"

CpSgnXY = math.Copysign(x, y)

Where CpSgnXY is the value, of type float64, composed of the magnitude of x and the sign of y.

Example

The following code demonstrates the basic implementations of .Copysign():

package main

import (
  "fmt"
  "math"
)

func main() {
  fmt.Println(math.Copysign(4.9, -1))
}

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The output will be:

-4.9

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Codebyte Example

The following example shows how the Copysign() function handles various arguments.

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