8 lines
		
	
	
		
			181 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			181 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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module.exports = function () {
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	var atanh = Math.atanh;
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	if (typeof atanh !== "function") return false;
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	return Math.round(atanh(0.5) * 1e15) === 549306144334055;
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};
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