Applies to TestComplete 14.70, last modified on October 26, 2020

Description

Use this routine to calculate a natural logarithm of any positive number. The natural logarithm is the logarithm to the base of e, where e is a constant that approximately equals to 2.718282.

Using this routine you can also calculate the 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)

This method is available if the BuiltIn plugin is installed and enabled. The plugin is installed and enabled by default.

Declaration

BuiltIn.Log(Value)

Value [in]    Required    Double    
Result Double

Applies To

The method is applied to the following object:

Parameters

The method has the following parameter:

Value

The positive number whose natural logarithm you want to get.

Result Value

The natural logarithm of the specified number.

Example

The following function uses the BuiltIn.Log method to calculate base-2 logarithm of passed argument.

JavaScript, JScript

function log2(x)
{
  return BuiltIn.Log(x) / BuiltIn.Log(2);
}

Python

def log2(x):
  return BuiltIn.Log(x) / BuiltIn.Log(2)

VBScript

Function log2(x)
  log2 = BuiltIn.Log(x) / BuiltIn.Log(2)
End Function

DelphiScript

function log2(x);
begin
  Result := BuiltIn.Log(x) / BuiltIn.Log(2);
end;

C++Script, C#Script

function log2(x)
{
  return BuiltIn["Log"](x) / BuiltIn["Log"](2);
}

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