function parseIntHelper(n) { var a; for (var i = 0; i < 5; i++) a = parseInt(n); return a; } function doParseIntTests() { var inputs = [0, -0, .1, -.1, .7, -.7, 1.3, -1.3]; var outputs = new Array(8); //avoid jit, unrolled outputs[0] = outputs[1] = outputs[2] = outputs[4] = 0; outputs[3] = outputs[5] = -0; outputs[6] = 1; outputs[7] = -1; for (var i = 0; i < 8; i++) { var n = Object.is(inputs[i], -0) ? "-0" : String(inputs[i]); var testfn = new Function('return parseIntHelper(' + n + ');'); assertEq(testfn(), outputs[i]); } } doParseIntTests(); assertEq(parseInt("08"), 8); assertEq(parseInt("09"), 9);