Hands-On High Performance with Go

Scalar multiplication

While manipulating matrices, we may want to multiply all of the values within a matrix by a scalar value.

We can represent this in Go with the following code:

package mainimport (  "fmt"  "gonum.org/v1/gonum/mat")func main() {  a := mat.NewDense(3, 3, []float64{1, 2, 3, 4, 5, 6, 7, 8, 9})  a.Scale(4, a) // Scale matrix by 4  matrixPrint(a)}func matrixPrint(m mat.Matrix) {  formattedMatrix := mat.Formatted(m, mat.Prefix(""), mat.Squeeze())  fmt.Printf("%v\n", formattedMatrix)}

This code produces the following results:

Here, we can see that each element in our matrix has been scaled by 4, thus providing an executed example of ...