test/func/func_test.go

package func_test

import (
	"fmt"
	"math"
	"strings"
	"testing"
)

func BenchmarkFunc(t *testing.B) {

	t.StartTimer()
	for i := 0; i < 1000000000; {
		func() {
			i++
		}()
	}
	t.StopTimer()
}

func BenchmarkCode(t *testing.B) {

	t.StartTimer()
	for i := 0; i < 1000000000; {
		i++
	}
	t.StopTimer()
}

func TestXXX(t *testing.T) {
	A := []float64{}
	X := 0.0
	Z := 1.0
	for i := 1; i < 11; i++ {
		if i%2 == 0 {
			Z = Z * 2
		} else {
			Z = Z + 0.5
		}
		X = X + Z
		println("Z=", Z, "     X=", X)
		A = append(A, X)
	}
	for i := 0; i < 10; i++ {
		Y := int(A[i])
		println(strings.Repeat(".", Y))
	}
}

func TestSIN(t *testing.T) {
	A := []float64{}
	X := 0.0
	Z := 1.0
	for i := 0; i <= 360; i++ {
		Z = float64(i) / 360 * 2 * math.Pi
		X = math.Sin(Z)*30 + 31
		A = append(A, X)
		println("i=   ", i, "Z=", Z, "     X=", X)
	}
	for i := 0; i <= 360; i++ {
		if i%10 == 0 {
			Y := int(A[i] + 0.5)
			println(fmt.Sprintf("%3d", i), strings.Repeat(".", Y))
		}
	}
}