--- /dev/null
+// 20.2.2.16 Math.fround(x)
+var $export = require('./_export')
+ , sign = require('./_math-sign')
+ , pow = Math.pow
+ , EPSILON = pow(2, -52)
+ , EPSILON32 = pow(2, -23)
+ , MAX32 = pow(2, 127) * (2 - EPSILON32)
+ , MIN32 = pow(2, -126);
+
+var roundTiesToEven = function(n){
+ return n + 1 / EPSILON - 1 / EPSILON;
+};
+
+
+$export($export.S, 'Math', {
+ fround: function fround(x){
+ var $abs = Math.abs(x)
+ , $sign = sign(x)
+ , a, result;
+ if($abs < MIN32)return $sign * roundTiesToEven($abs / MIN32 / EPSILON32) * MIN32 * EPSILON32;
+ a = (1 + EPSILON32 / EPSILON) * $abs;
+ result = a - (a - $abs);
+ if(result > MAX32 || result != result)return $sign * Infinity;
+ return $sign * result;
+ }
+});
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