API references FQL Built-in functions Ln Ln This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics. JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln( value ) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! ln( value ) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln( value ) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln( value ) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln( value ) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln( value ) Description The Ln function returns the natural logarithm (base e) of the operand. Parameters Parameter Type Definition and Requirements value Number Take the ln of this value. Returns A Number which is the result of the Ln operation. Examples The query in the following example returns the logarithm base e of the value 0.5: JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! client.query( q.Ln(0.5) ) .then((ret) => console.log(ret)) .catch((err) => console.error( 'Error: [%s] %s: %s', err.name, err.message, err.errors()[0].description, )) -0.6931471805599453 JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! result = client.query( q.ln(0.5) ) print(result) -0.6931471805599453 JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! result, err := client.Query( f.Ln(0.5)) if err != nil { fmt.Fprintln(os.Stderr, err) } else { fmt.Println(result) } -0.6931471805599453 JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! try { Value result = await client.Query( Ln(0.5) ); Console.WriteLine(result); } catch (Exception e) { Console.WriteLine($"ERROR: {e.Message}"); } DoubleV(-0.6931471805599453) JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! System.out.println( client.query( Ln(Value(0.5)) ).get()); -0.6931471805599453 JAVASCRIPTPYTHONGO.NET/C#JAVASHELLCopied! Ln(0.5) -0.6931471805599453 Query metrics: bytesIn: 10 bytesOut: 32 computeOps: 1 readOps: 0 writeOps: 0 readBytes: 0 writeBytes: 0 queryTime: 1ms retries: 0 Let Log