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VBscript Built-in Functions
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Log
Gives the natural logarithm of a number
Log(number)
The natural logarithm is the logarithm to the base e. The constant e is approximately 2.718282.
You can calculate base-n logarithms for any number x by dividing the natural logarithm of x by the natural logarithm of n as follows:
Logn(x) = Log(x) / Log(n)
The following example illustrates a custom Function that calculates base-10 logarithms:
Function Log10(X)
Log10 = Log(X) / Log(10)
End Function
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