Lines added to pendulum_alt.c:

Lines 10-15 (before line 10 in original file)
Lines 17-20 (before line 11 in original file)
Lines 36-42 (before line 26 in original file)
Lines 134-150 (before line 114 in original file)
Lines 190-196 (before line 153 in original file)


Lines altered in pendulum_alt.c:

Lines 78-86 (Lines 61-66 in original file)