JezK
Edit File: compare-nan.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. var a = [NaN, -1, 0, 1, 1.2, -7.9, true, false, 'foo', '0', 'NaN' ]; for (var i in a) { var x = a[i]; assertFalse(NaN == x, "NaN == " + x); assertFalse(NaN === x, "NaN === " + x); assertFalse(NaN < x, "NaN < " + x); assertFalse(NaN > x, "NaN > " + x); assertFalse(NaN <= x, "NaN <= " + x); assertFalse(NaN >= x, "NaN >= " + x); assertFalse(x == NaN, "" + x + " == NaN"); assertFalse(x === NaN, "" + x + " === NaN"); assertFalse(x < NaN, "" + x + " < NaN"); assertFalse(x > NaN, "" + x + " > NaN"); assertFalse(x <= NaN, "" + x + " <= NaN"); assertFalse(x >= NaN, "" + x + " >= NaN"); } var b = ["NaN", "-1", "0", "1", "1.2", "-7.9", "true", "false", "'foo'", "'0'", "'NaN'" ]; for (var i in b) { var x = b[i]; var program = "assertFalse(NaN == " + x + ", 'NaN == ' + " + x + ");\n" + "assertFalse(NaN === " + x + ", 'NaN === ' + " + x + ");\n" + "assertFalse(NaN < " + x + ", 'NaN < ' + " + x + ");\n" + "assertFalse(NaN > " + x + ", 'NaN > ' + " + x + ");\n" + "assertFalse(NaN <= " + x + ", 'NaN <= ' + " + x + ");\n" + "assertFalse(NaN >= " + x + ", 'NaN >= ' + " + x + ");\n" + "assertFalse(" + x + " == NaN, '' + " + x + " + ' == NaN');\n" + "assertFalse(" + x + " === NaN, '' + " + x + " + ' === NaN');\n" + "assertFalse(" + x + " < NaN, '' + " + x + " + ' < NaN');\n" + "assertFalse(" + x + " > NaN, '' + " + x + " + ' > NaN');\n" + "assertFalse(" + x + " <= NaN, '' + " + x + " + ' <= NaN');\n" + "assertFalse(" + x + " >= NaN, '' + " + x + " + ' >= NaN');\n"; eval(program); }