WebAssembly call_indirect example

gistfile1.txt

(module
   (type $_type (func (param f32) (param f32) (result f32))) ;; we need a signature for the indirect call
   (memory 256 256)
   
   (table 128 anyfunc) ;; Table with function pointers
   (elem (i32.const 0) $div) ;; function pointer with index 0 points to $div function

   (func $div (param $p1 f32) (param $p2 f32) (result f32)
        (f32.div
          (get_local $p1)
          (get_local $p2)
        )
   )

   (func $div2 (param $p1 f32) (param $p2 f32) (result f32)
     (call $div
       (get_local $p1)
       (get_local $p2)
     )
   )

   (func $div2 (param $p1 f32) (param $p2 f32) (result f32)
	  (call_indirect $_type ;; we need the signature of the function for validation
	       (get_local $p1)
	       (get_local $p2)
		     (i32.const 0) ;; this is the index into the table!!
	  )
   )

    (global $STACKTOP (mut i32) (i32.const 0))
    (export "testdiv" (func $div))
    (export "testdivB" (func $div2))
)