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Tina Müller 2016-12-05 23:44:36 +01:00
parent 9dc3c2bb62
commit bba7bfd280
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Task/Exponentiation-operator/FreeBASIC/exponentiation-operator.freebasic Normal file
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' FB 1.05.0
' Note that 'base' is a keyword in FB, so we use 'base_' instead as a parameter
Function Pow Overload (base_ As Double, exponent As Integer) As Double
If exponent = 0.0 Then Return 1.0
If exponent = 1.0 Then Return base_
If exponent < 0.0 Then Return 1.0 / Pow(base_, -exponent)
Dim power As Double = base_
For i As Integer = 2 To exponent
power *= base_
Next
Return power
End Function
Function Pow Overload(base_ As Integer, exponent As Integer) As Double
Return Pow(CDbl(base_), exponent)
End Function
' check results of these functions using FB's built in '^' operator
Print "Pow(2, 2) = "; Pow(2, 2)
Print "Pow(2.5, 2) = "; Pow(2.5, 2)
Print "Pow(2, -3) = "; Pow(2, -3)
Print "Pow(1.78, 3) = "; Pow(1.78, 3)
Print
Print "2 ^ 2 = "; 2 ^ 2
Print "2.5 ^ 2 = "; 2.5 ^ 2
Print "2 ^ -3 = "; 2 ^ -3
Print "1.78 ^ 3 = "; 1.78 ^ 3
Print
Print "Press any key to quit"
Sleep