EXHIBIT 11.1 NEWBRIDGE NETWORKS CORPORATION COMPUTATION OF EARNINGS PER SHARE (Accounting principles generally accepted in Canada) (Canadian dollars, amounts in thousands except per share data) for the fiscal quarter ended for the fiscal year ended ---------------------------- ------------------------- Aug 2, Nov 1, Jan 31, May 2, May 2, Apr 30, Apr 30, 1998 1998 1999 1999 1999 1998 1997 ---- ---- ---- ---- ---- ---- ---- Basic earnings (loss) per share Net earnings (loss) $ 35,520 $ 53,314 $120,119 $(29,792) $179,161 $(18,318) $156,917 ======== ======== ======== ======== ======== ======== ======== Common Shares outstanding at the beginning of the period 175,686 176,558 176,877 178,579 175,686 171,859 168,676 Weighted average number of Common Shares issued during the period 419 208 719 1,526 1,944 2,758 1,834 -------- -------- -------- -------- -------- -------- -------- Weighted average number of Common Shares outstanding during the period 176,105 176,766 177,596 180,105 177,630 174,617 170,510 ======== ======== ======== ======== ======== ======== ======== Basic earnings (loss) per share $ 0.20 $ 0.30 $ 0.68 $ (0.17) $ 1.01 $ (0.10) $ 0.92 ======== ======== ======== ======== ======== ======== ======== Fully diluted earnings (loss) per share Earnings (loss) before imputed earnings $ 35,520 $ 53,314 $120,119 $(29,792) $179,161 $(18,318) $156,917 After tax imputed earnings from the investment of funds received through dilution 6,817 -- 7,353 -- -- -- 11,589 -------- -------- -------- -------- -------- -------- -------- Adjusted net earnings (loss) $ 42,337 $ 53,314 $127,472 $(29,792) $179,161 $(18,318) $168,506 ======== ======== ======== ======== ======== ======== ======== Weighted average number of Common Shares outstanding during the period 176,105 176,766 177,596 180,105 177,630 174,617 170,510 Weighted average common share equivalents based on conversion of outstanding stock options 20,645 -- 22,355 -- -- -- 14,085 -------- -------- -------- -------- -------- -------- -------- Weighted average number of Common Shares and equivalents outstanding during the period 196,750 176,766 199,951 180,105 177,630 174,617 184,595 ======== ======== ======== ======== ======== ======== ======== Fully diluted earnings (loss) per share $ 0.20 $ 0.30 $ 0.64 $ (0.17) $ 1.01 $ (0.10) $ 0.91 ======== ======== ======== ======== ======== ======== ======== Earnings (loss) per share expressed in U.S. dollars Daily average exchange rate of a Canadian dollar for U.S. dollars as reported by the Federal Reserve Bank of New York $ 0.6817 $ 0.6520 $ 0.6515 $ 0.6660 $ 0.6629 $ 0.7116 $ 0.7344 Basic earnings (loss) per share, in U.S. dollars $ 0.14 $ 0.20 $ 0.44 $ (0.11) $ 0.67 $ (0.07) $ 0.68 Fully diluted earnings (loss) per share, in U.S. dollars $ 0.14 $ 0.20 $ 0.42 $ (0.11) $ 0.67 $ (0.07) $ 0.67 Page 227