======ln======
WMPRO, WMMINI FW >= 1.0 WMMEGA FW >= 2.0
Return the natural logarithm of a number
====Description====
float
ln (
number
$number
)
====Parameter====
$number: A number
====Return Values====
Float: Natural logarithm of the number
====Examples====
$val=ln(1);
print($val); // outputs 0
?>
====Note====
The natural logarithm of a number is its logarithm to the base of the mathematical constant //e//, where //e// is an irrational and transcendental number approximately equal to 2.718281828459.
====See Also====
[[log10()]] - Return the base 10 logarithm of a number
[[power()]] - Return base raised to the power of exp