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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 var a = [NaN, -1, 0, 1, 1.2, -7.9, true, false, 'foo', '0', 'NaN' ];
     29 for (var i in a) {
     30   var x = a[i];
     31   assertFalse(NaN == x, "NaN == " + x);
     32   assertFalse(NaN === x, "NaN === " + x);
     33   assertFalse(NaN < x, "NaN < " + x);
     34   assertFalse(NaN > x, "NaN > " + x);
     35   assertFalse(NaN <= x, "NaN <= " + x);
     36   assertFalse(NaN >= x, "NaN >= " + x);
     37 
     38   assertFalse(x == NaN, "" + x + " == NaN");
     39   assertFalse(x === NaN, "" + x + " === NaN");
     40   assertFalse(x < NaN, "" + x + " < NaN");
     41   assertFalse(x > NaN, "" + x + " > NaN");
     42   assertFalse(x <= NaN, "" + x + " <= NaN");
     43   assertFalse(x >= NaN, "" + x + " >= NaN");
     44 }
     45 
     46 var b = ["NaN", "-1", "0", "1", "1.2", "-7.9", "true", "false", "'foo'", "'0'",
     47          "'NaN'" ];
     48 for (var i in b) {
     49   var x = b[i];
     50   var program =
     51       "assertFalse(NaN == " + x + ", 'NaN == ' + " + x + ");\n" +
     52       "assertFalse(NaN === " + x + ", 'NaN === ' + " + x + ");\n" +
     53       "assertFalse(NaN < " + x + ", 'NaN < ' + " + x + ");\n" +
     54       "assertFalse(NaN > " + x + ", 'NaN > ' + " + x + ");\n" +
     55       "assertFalse(NaN <= " + x + ", 'NaN <= ' + " + x + ");\n" +
     56       "assertFalse(NaN >= " + x + ", 'NaN >= ' + " + x + ");\n" +
     57 
     58       "assertFalse(" + x + " == NaN, '' + " + x + " + ' == NaN');\n" +
     59       "assertFalse(" + x + " === NaN, '' + " + x + " + ' === NaN');\n" +
     60       "assertFalse(" + x + " < NaN, '' + " + x + " + ' < NaN');\n" +
     61       "assertFalse(" + x + " > NaN, '' + " + x + " + ' > NaN');\n" +
     62       "assertFalse(" + x + " <= NaN, '' + " + x + " + ' <= NaN');\n" +
     63       "assertFalse(" + x + " >= NaN, '' + " + x + " + ' >= NaN');\n";
     64   eval(program);
     65 }
     66 
     67