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LN

Syntax

1
LN(numericExpression)

Description

Returns the Natural Logarithm of the numeric expression given. A natural logarithm is a logarithm in base e (e value can be obtained with EXP(1)).

Both the argument and the result are of type Float.

Examples

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PRINT "LN(10) is "; LN(10)

You can compute the logarithm in any base dividing LN(x) by LN(base):

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2
PRINT "LN2(8) is "; LN(8) / LN(2) : REM Base 2 Logarithm
PRINT "LOG(100) is "; LN(100) / LN(10) : REM Base 10 Logarithm

Remarks

  • This function is 100% Sinclair BASIC Compatible
  • If the given argument type is not float, it will be converted to float before operating with it.

See also