26 lines
522 B
Go
26 lines
522 B
Go
|
package basic
|
||
|
|
|
||
|
|
import (
|
||
|
|
"math"
|
||
|
|
"testing"
|
||
|
|
)
|
||
|
|
|
||
|
|
func TestEventZeroRefineFindsNearbyRoot(t *testing.T) {
|
||
|
|
root := 0.123456789
|
||
|
|
got := eventZeroRefine(root+0.00002, 0.0003, 1e-7, func(x float64) float64 {
|
||
|
|
return x - root
|
||
|
|
})
|
||
|
|
if math.Abs(got-root) > 1e-12 {
|
||
|
|
t.Fatalf("got %.15f want %.15f", got, root)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestEventZeroRefineFallsBackToFixedScan(t *testing.T) {
|
||
|
|
got := eventZeroRefine(0.1, 1, 0.1, func(x float64) float64 {
|
||
|
|
return x*x + 1
|
||
|
|
})
|
||
|
|
if math.Abs(got) > 1e-12 {
|
||
|
|
t.Fatalf("got %.15f want 0", got)
|
||
|
|
}
|
||
|
|
}
|