func testFpVar(t *testing.T) {
const expected = 42
f := C.intFunc(C.fortytwo)
res1 := C.bridge_int_func(f)
if r1 := int(res1); r1 != expected {
t.Errorf("got %d, want %d", r1, expected)
}
res2 := callCBridge(f)
if r2 := int(res2); r2 != expected {
t.Errorf("got %d, want %d", r2, expected)
}
r3 := callBridge(f)
if r3 != expected {
t.Errorf("got %d, want %d", r3, expected)
}
}
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
f := C.intFunc(C.fortytwo)
fmt.Println(int(C.bridge_int_func(f)))
// Output: 42
}
func main() {
f := C.intFunc(C.fortytwo)
fmt.Println(int(C.bridge_int_func(f)))
// Output: 42
}
//export Bridge
// This Go function is called from C
func Bridge(param string, callback unsafe.Pointer) string {
uuid := uuid.NewV4()
cs := C.CString("Hello World!")
return fmt.Sprintf("[%s] %s = %d (%d)", uuid.String(), param, C.bridge_int_func(C.intFunc(callback)), C.CBridge(cs))
}
func callCBridge(f C.intFunc) C.int {
return C.bridge_int_func(f)
}
func callBridge(f C.intFunc) int {
return int(C.bridge_int_func(f))
}
