| FreeMat
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Section: Base Constants
Returns a double (64-bit floating point number) value that represents Euler's constant, the base of the natural logarithm. Typical usage 
y = e
This value is approximately 2.718281828459045.
The following example demonstrates the use of the e function.
--> e
ans = 
    2.7183 
--> log(e)
ans = 
 1