truncateToInt32.js

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// vim: set ts=8 sts=4 et sw=4 tw=99:

function w(y)

    var x = 23.5;

    return x & y;

function f(x, y) {

    // Confuse the type analysis to not know the type of x.

    var t = 3.5 + x;

    t + 3.5;

    return x & y;

function g_bool(x, y) {

    var t;

    if (x + 0)

        t = true;

    else

        t = false;

    return t & y;

function g_null(x) {

    return null & x;

var obj = { valueOf: function () { return 5; } }

assertEq(w(93), 21);

assertEq(g_bool(1, 3), 1);

assertEq(g_bool(0, 3), 0);

assertEq(g_null(2), 0);

assertEq(f(1, 7), 1);

assertEq(f(true, 7), 1);

assertEq(f(false, 7), 0);

assertEq(f("3", 7), 3);

assertEq(f(obj, 7), 5);

assertEq(f(3.5, 7), 3);

assertEq(f(undefined, 7), 0);

assertEq(f(null, 7), 0);

assertEq(f(Math.NaN, 7), 0);