Mail

frontend/node_modules/es-abstract/2018/ToUint8Clamp.js

@@ -0,0 +1,19 @@
+'use strict';
+
+var ToNumber = require('./ToNumber');
+var floor = require('./floor');
+
+var $isNaN = require('math-intrinsics/isNaN');
+
+// https://262.ecma-international.org/6.0/#sec-touint8clamp
+
+module.exports = function ToUint8Clamp(argument) {
+	var number = ToNumber(argument);
+	if ($isNaN(number) || number <= 0) { return 0; }
+	if (number >= 0xFF) { return 0xFF; }
+	var f = floor(number);
+	if (f + 0.5 < number) { return f + 1; }
+	if (number < f + 0.5) { return f; }
+	if (f % 2 !== 0) { return f + 1; }
+	return f;
+};