You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
"use strict"; |
|
|
|
var log = Math.log, sqrt = Math.sqrt; |
|
|
|
module.exports = function (value) { |
|
if (isNaN(value)) return NaN; |
|
value = Number(value); |
|
if (value < 1) return NaN; |
|
if (value === 1) return 0; |
|
if (value === Infinity) return value; |
|
return log(value + sqrt(value * value - 1)); |
|
};
|
|
|
