1 // Copyright 2013 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 [Math.log10, Math.log2].forEach( function(fun) { 29 assertTrue(isNaN(fun(NaN))); 30 assertTrue(isNaN(fun(fun))); 31 assertTrue(isNaN(fun({ toString: function() { return NaN; } }))); 32 assertTrue(isNaN(fun({ valueOf: function() { return -1; } }))); 33 assertTrue(isNaN(fun({ valueOf: function() { return "abc"; } }))); 34 assertTrue(isNaN(fun(-0.1))); 35 assertTrue(isNaN(fun(-1))); 36 assertEquals("-Infinity", String(fun(0))); 37 assertEquals("-Infinity", String(fun(-0))); 38 assertEquals(0, fun(1)); 39 assertEquals("Infinity", String(fun(Infinity))); 40 }); 41 42 for (var i = -300; i < 300; i += 0.7) { 43 assertEqualsDelta(i, Math.log10(Math.pow(10, i)), 1E-13); 44 assertEqualsDelta(i, Math.log2(Math.pow(2, i)), 1E-13); 45 } 46
