`Log`

This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics.

Log( value )

log( value )

Log( value )

Log( value )

Log( value )

Log( value )

Description

The Log function returns the natural logarithm (base 10) of the operand.

Parameters

Parameter Type Definition and Requirements

Parameter	Type	Definition and Requirements
`value`	Number	The Number whose base-10 natural logarithm should be returned.

value

Number

The Number whose base-10 natural logarithm should be returned.

Returns

A Number which is the result of the Log operation.

Examples

The following query returns the base-10 natural logarithm of the value 0.5:

client.query(
  q.Log(0.5)
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))

-0.3010299956639812

result = client.query(
  q.log(0.5)
)
print(result)

-0.3010299956639812

result, err := client.Query(
	f.Log(0.5))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}

-0.3010299956639812

try
{
    Value result = await client.Query(
        Log(0.5)
    );

    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}

DoubleV(-0.3010299956639812)

System.out.println(
    client.query(
        Log(Value(0.5))
    ).get());

-0.3010299956639812

Log(0.5)

-0.3010299956639812

Query metrics:

bytesIn: 11
bytesOut: 32
computeOps: 1
readOps: 0
writeOps: 0
readBytes: 0
writeBytes: 0
queryTime: 1ms
retries: 0