Sha256: bc18be6897d6db8468fa0ad5d49688795f30d8a9f734943a6e00311eb676f09d
Contents?: true
Size: 711 Bytes
Versions: 62
Compression:
Stored size: 711 Bytes
Contents
/* */
var $def = require('./$.def'),
sign = require('./$.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;
};
$def($def.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
62 entries across 31 versions & 1 rubygems