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June 2018 Update

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This commit is contained in:
Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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21
Task/LU-decomposition/Go/lu-decomposition-3.go
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@ -3,17 +3,17 @@ package main
import (
"fmt"
"github.com/gonum/matrix/mat64"
"gonum.org/v1/gonum/mat"
)
func main() {
showLU(mat64.NewDense(3, 3, []float64{
showLU(mat.NewDense(3, 3, []float64{
1, 3, 5,
2, 4, 7,
1, 1, 0,
}))
fmt.Println()
showLU(mat64.NewDense(4, 4, []float64{
showLU(mat.NewDense(4, 4, []float64{
11, 9, 24, 2,
1, 5, 2, 6,
3, 17, 18, 1,
@ -21,14 +21,13 @@ func main() {
}))
}
func showLU(a *mat64.Dense) {
fmt.Printf("a: %v\n\n", mat64.Formatted(a, mat64.Prefix(" ")))
var lu mat64.LU
func showLU(a *mat.Dense) {
fmt.Printf("a: %v\n\n", mat.Formatted(a, mat.Prefix(" ")))
var lu mat.LU
lu.Factorize(a)
var l, u mat64.TriDense
l.LFrom(&lu)
u.UFrom(&lu)
fmt.Printf("l: %.5f\n\n", mat64.Formatted(&l, mat64.Prefix(" ")))
fmt.Printf("u: %.5f\n\n", mat64.Formatted(&u, mat64.Prefix(" ")))
l := lu.LTo(nil)
u := lu.UTo(nil)
fmt.Printf("l: %.5f\n\n", mat.Formatted(l, mat.Prefix(" ")))
fmt.Printf("u: %.5f\n\n", mat.Formatted(u, mat.Prefix(" ")))
fmt.Println("p:", lu.Pivot(nil))
}