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38 lines
1000 B
38 lines
1000 B
4 years ago
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// Thanks for hints: https://github.com/paulmillr/es6-shim
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"use strict";
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var some = Array.prototype.some
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, abs = Math.abs
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, sqrt = Math.sqrt
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, compare = function (val1, val2) { return val2 - val1; }
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, divide = function (value) { return value / this; }
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, add = function (sum, number) { return sum + number * number; };
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// eslint-disable-next-line no-unused-vars
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module.exports = function (val1, val2/*, …valn*/) {
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var result, numbers;
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if (!arguments.length) return 0;
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some.call(arguments, function (val) {
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if (isNaN(val)) {
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result = NaN;
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return false;
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}
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if (!isFinite(val)) {
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result = Infinity;
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return true;
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}
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if (result !== undefined) return false;
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val = Number(val);
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if (val === 0) return false;
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if (numbers) numbers.push(abs(val));
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else numbers = [abs(val)];
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return false;
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});
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if (result !== undefined) return result;
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if (!numbers) return 0;
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numbers.sort(compare);
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return numbers[0] * sqrt(numbers.map(divide, numbers[0]).reduce(add, 0));
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};
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