examples/complex: and bugfixes

examples/complex/complex_test.go

@@ -0,0 +1,36 @@
+package complex
+
+import (
+	"math"
+	"testing"
+	"testing/quick"
+)
+
+//go:generate go run asm.go -out complex.s -stubs stub.go
+
+func TestReal(t *testing.T) {
+	expect := func(x complex128) float64 {
+		return real(x)
+	}
+	if err := quick.CheckEqual(Real, expect, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestImag(t *testing.T) {
+	expect := func(x complex128) float64 {
+		return imag(x)
+	}
+	if err := quick.CheckEqual(Imag, expect, nil); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestNorm(t *testing.T) {
+	expect := func(x complex128) float64 {
+		return math.Sqrt(real(x)*real(x) + imag(x)*imag(x))
+	}
+	if err := quick.CheckEqual(Norm, expect, nil); err != nil {
+		t.Fatal(err)
+	}
+}