A generic solution (cont'd)

 1   VALUE rb_cpp_num2long(VALUE x) {
 2     return (VALUE)(NUM2LONG(x));
 3   }
 4 
 5   unsigned long CPP_NUM2INT(VALUE x)
 6   {
 7     return (unsigned long)(rb_cpp_protect(
 8         Conversion_Helpers::rb_cpp_num2ulong, x));
 9   }