Sha256: 632507ffbec19988cab53057632a4010bf27d394bc3bbdf5453dc1430b196cc9
Contents?: true
Size: 743 Bytes
Versions: 320
Compression:
Stored size: 743 Bytes
Contents
// 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;
}
});
Version data entries
320 entries across 8 versions & 3 rubygems