move out c/cpp/py

cl/_testpy/pow/in.go

@@ -0,0 +1,12 @@
+package main
+
+import (
+	"github.com/goplus/lib/c"
+	"github.com/goplus/lib/py"
+	"github.com/goplus/lib/py/math"
+)
+
+func main() {
+	x := math.Pow(py.Float(2), py.Float(3))
+	c.Printf(c.Str("pow(2, 3) = %f\n"), x.Float64())
+}