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--- cubloc:log:index [2026/02/16 05:48] – created - external edit 127.0.0.1
+++ cubloc:log:index [2026/02/20 15:37] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Log ======
-Returns the natural logarithm (Ln) of a value.
+The **Log** function returns the natural logarithm (base $e \approx 2.718$) of a numeric value, often denoted as **ln(x)**. It is widely used in calculations involving exponential decay, growth rates, and complex sensor data scaling.
+For the most accurate results, use the ''Single'' data type. **Note:** The input value **B** must be greater than zero ($B > 0$). Entering zero or a negative number will result in a runtime error.
+Example
 <code xbasic>
-A=Log B
+Dim A As Single
+Dim B As Single
+B = 2.718282
+A = Log(B)      ' Returns approx. 1.0
 </code>
+==== Explanation: ====
+  * **B**: A positive numeric value ($B > 0$).
+  * **Log B**: Calculates the natural logarithm ($ln B$).
+  * **A**: Stores the result.
 See also [[:cubloc:log10:|Log10]]
 [[cubloc:index#system_library:|Go CUBLOC home]]