def cCopy():
    """
    Return the kernel source for cCopy
    """
    code_text = """
    KERNEL void cCopy( 
             GLOBAL_MEM  const float2 *CX,
             GLOBAL_MEM             float2 *CY)
    {
    // Copy x to y: y = x;
    //CX: input array (float2)
    // CY output array (float2)
    int gid=get_global_id(0);  
    CY[gid]=CX[gid];
    };
    """
    return code_text
