Data commit

Task/Time-a-function/VBA/time-a-function.vba

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+Public Declare Function GetTickCount Lib "kernel32.dll" () As Long
+Private Function identity(x As Long) As Long
+    For j = 0 To 1000
+    identity = x
+    Next j
+End Function
+Private Function sum(ByVal num As Long) As Long
+    Dim t As Long
+    For j = 0 To 1000
+    t = num
+    For i = 0 To 10000
+        t = t + i
+    Next i
+    Next j
+    sum = t
+End Function
+Private Sub time_it()
+    Dim start_time As Long, finis_time As Long
+    start_time = GetTickCount
+    identity 1
+    finis_time = GetTickCount
+    Debug.Print "1000 times Identity(1) takes "; (finis_time - start_time); " milliseconds"
+    start_time = GetTickCount
+    sum 1
+    finis_time = GetTickCount
+    Debug.Print "1000 times Sum(1) takes "; (finis_time - start_time); " milliseconds"
+End Sub