clEnqueueReadBuffer

function clEnqueueReadBuffer(

  command_queue: cl_command_queue;

  buffer: cl_mem;

  blocking_read: cl_bool;

  offset: csize_t;

  cb: csize_t;

  ptr: Pointer;

  num_events: cl_uint;

  events_list: Pcl_event;

  event: Pcl_event

):cl_int;