BIGINT UNSIGNED value is out of range in '`test`.`edge`.`x1` - 1'

static int test_ps(MYSQL *mysql)

{

  MYSQL_STMT *stmt;

  int rc, i;

  MYSQL_BIND bind[5];

  unsigned char vals[5]= {1,1,1,1,1};

  rc= mysql_query(mysql, "CREATE TEMPORARY TABLE edge ( id INTEGER NOT NULL AUTO_INCREMENT, x1 INTEGER, y1 INTEGER, x2 INTEGER, y2 INTEGER, PRIMARY KEY (id))ENGINE=MyISAM");

  check_mysql_rc(rc, mysql);

  rc= mysql_query(mysql, "INSERT INTO edge (x1, y1, x2, y2) VALUES (0, 0, 3, 5)");

  check_mysql_rc(rc, mysql);

  rc= mysql_query(mysql, "INSERT INTO edge (x1, y1, x2, y2) VALUES (0, 1, 3, 5)");

  check_mysql_rc(rc, mysql);

  stmt= mysql_stmt_init(mysql);

  check_stmt_rc(rc, stmt);

  rc= mysql_stmt_prepare(stmt, SL("SELECT edge.id AS edge_id, edge.x1 AS edge_x1, edge.y1 AS edge_y1, edge.x2 AS edge_x2, edge.y2 AS edge_y2 FROM edge WHERE (edge.x1 - ?) * (edge.x1 - ?) + (edge.y1 - ?) * (edge.y1 - ?) <= ?"));

  check_stmt_rc(rc, stmt);

  memset(bind, 0, sizeof(MYSQL_BIND) * 5);

  for (i=0; i < 5; i++)

  {

    bind[i].buffer_type= MYSQL_TYPE_TINY;

    bind[i].buffer= &vals[i];

    bind[i].is_unsigned= 1;

  }

  rc= mysql_stmt_bind_param(stmt, bind);

  check_stmt_rc(rc, stmt);

  rc= mysql_stmt_execute(stmt);

  check_stmt_rc(rc, stmt);

  /* Error will be read here */

  rc= mysql_stmt_store_result(stmt);

  check_stmt_rc(rc, stmt);

  mysql_stmt_close(stmt);

  return OK;

}

Error: BIGINT UNSIGNED value is out of range in '`test`.`edge`.`x1` - 1'

mysql> SELECT edge.id AS edge_id, edge.x1 AS edge_x1, edge.y1 AS edge_y1, edge.x2 AS edge_x2, edge.y2 AS edge_y2 FROM edge WHERE (edge.x1 - 1) * (edge.x1 - 1) + (edge.y1 - 1) * (edge.y1 - 1) <= 1;

+---------+---------+---------+---------+---------+

| edge_id | edge_x1 | edge_y1 | edge_x2 | edge_y2 |

+---------+---------+---------+---------+---------+

|       2 |       0 |       1 |       3 |       5 |

+---------+---------+---------+---------+---------+

1 row in set (0,00 sec)