move out c/cpp/py

cl/_testrt/qsortfn/qsort/qsort.go

@@ -0,0 +1,20 @@
+package qsort
+
+import (
+	_ "unsafe"
+
+	"github.com/goplus/lib/c"
+)
+
+const (
+	LLGoPackage = "decl"
+)
+
+// llgo:type C
+type Comp func(a, b c.Pointer) c.Int
+
+//go:linkname Qsort C.qsort
+func Qsort(base c.Pointer, count, elem uintptr, compar Comp)
+
+//go:linkname Qsort2 C.qsort
+func Qsort2(base c.Pointer, count, elem uintptr, compar func(a, b c.Pointer) c.Int)