Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 |
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| 27 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 28 | // Flags: --allow-natives-syntax |
| 29 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 30 | // Test Math.min(). |
| 31 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 32 | assertEquals(Infinity, Math.min()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 33 | assertEquals(1, Math.min(1)); |
| 34 | assertEquals(1, Math.min(1, 2)); |
| 35 | assertEquals(1, Math.min(2, 1)); |
| 36 | assertEquals(1, Math.min(1, 2, 3)); |
| 37 | assertEquals(1, Math.min(3, 2, 1)); |
| 38 | assertEquals(1, Math.min(2, 3, 1)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 39 | assertEquals(1.1, Math.min(1.1, 2.2, 3.3)); |
| 40 | assertEquals(1.1, Math.min(3.3, 2.2, 1.1)); |
| 41 | assertEquals(1.1, Math.min(2.2, 3.3, 1.1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 42 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 43 | // Prepare a non-Smi zero value. |
| 44 | function returnsNonSmi(){ return 0.25; } |
Leon Clarke | ac95265 | 2010-07-15 11:15:24 +0100 | [diff] [blame] | 45 | var ZERO = (function() { |
| 46 | var z; |
| 47 | // We have to have a loop here because the first time we get a Smi from the |
| 48 | // runtime system. After a while the binary op IC settles down and we get |
| 49 | // a non-Smi from the generated code. |
| 50 | for (var i = 0; i < 10; i++) { |
| 51 | z = returnsNonSmi() - returnsNonSmi(); |
| 52 | } |
| 53 | return z; |
| 54 | })(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 55 | assertEquals(0, ZERO); |
| 56 | assertEquals(Infinity, 1/ZERO); |
| 57 | assertEquals(-Infinity, 1/-ZERO); |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 58 | // Here we would like to have assertFalse(%_IsSmi(ZERO)); This is, however, |
| 59 | // unreliable, since a new space exhaustion at a critical moment could send |
| 60 | // us into the runtime system, which would quite legitimately put a Smi zero |
| 61 | // here. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 62 | assertFalse(%_IsSmi(-ZERO)); |
| 63 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 64 | var o = {}; |
| 65 | o.valueOf = function() { return 1; }; |
| 66 | assertEquals(1, Math.min(2, 3, '1')); |
| 67 | assertEquals(1, Math.min(3, o, 2)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 68 | assertEquals(1, Math.min(o, 2)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 69 | assertEquals(-Infinity, Infinity / Math.min(-0, +0)); |
| 70 | assertEquals(-Infinity, Infinity / Math.min(+0, -0)); |
| 71 | assertEquals(-Infinity, Infinity / Math.min(+0, -0, 1)); |
| 72 | assertEquals(-Infinity, Infinity / Math.min(-0, ZERO)); |
| 73 | assertEquals(-Infinity, Infinity / Math.min(ZERO, -0)); |
| 74 | assertEquals(-Infinity, Infinity / Math.min(ZERO, -0, 1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 75 | assertEquals(-1, Math.min(+0, -0, -1)); |
| 76 | assertEquals(-1, Math.min(-1, +0, -0)); |
| 77 | assertEquals(-1, Math.min(+0, -1, -0)); |
| 78 | assertEquals(-1, Math.min(-0, -1, +0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 79 | assertEquals(NaN, Math.min('oxen')); |
| 80 | assertEquals(NaN, Math.min('oxen', 1)); |
| 81 | assertEquals(NaN, Math.min(1, 'oxen')); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 82 | |
| 83 | |
| 84 | // Test Math.max(). |
| 85 | |
| 86 | assertEquals(Number.NEGATIVE_INFINITY, Math.max()); |
| 87 | assertEquals(1, Math.max(1)); |
| 88 | assertEquals(2, Math.max(1, 2)); |
| 89 | assertEquals(2, Math.max(2, 1)); |
| 90 | assertEquals(3, Math.max(1, 2, 3)); |
| 91 | assertEquals(3, Math.max(3, 2, 1)); |
| 92 | assertEquals(3, Math.max(2, 3, 1)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 93 | assertEquals(3.3, Math.max(1.1, 2.2, 3.3)); |
| 94 | assertEquals(3.3, Math.max(3.3, 2.2, 1.1)); |
| 95 | assertEquals(3.3, Math.max(2.2, 3.3, 1.1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 96 | |
| 97 | var o = {}; |
| 98 | o.valueOf = function() { return 3; }; |
| 99 | assertEquals(3, Math.max(2, '3', 1)); |
| 100 | assertEquals(3, Math.max(1, o, 2)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 101 | assertEquals(3, Math.max(o, 1)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 102 | assertEquals(Infinity, Infinity / Math.max(-0, +0)); |
| 103 | assertEquals(Infinity, Infinity / Math.max(+0, -0)); |
| 104 | assertEquals(Infinity, Infinity / Math.max(+0, -0, -1)); |
| 105 | assertEquals(Infinity, Infinity / Math.max(-0, ZERO)); |
| 106 | assertEquals(Infinity, Infinity / Math.max(ZERO, -0)); |
| 107 | assertEquals(Infinity, Infinity / Math.max(ZERO, -0, -1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 108 | assertEquals(1, Math.max(+0, -0, +1)); |
| 109 | assertEquals(1, Math.max(+1, +0, -0)); |
| 110 | assertEquals(1, Math.max(+0, +1, -0)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 111 | assertEquals(1, Math.max(-0, +1, +0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 112 | assertEquals(NaN, Math.max('oxen')); |
| 113 | assertEquals(NaN, Math.max('oxen', 1)); |
| 114 | assertEquals(NaN, Math.max(1, 'oxen')); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 115 | |
| 116 | assertEquals(Infinity, 1/Math.max(ZERO, -0)); |
| 117 | assertEquals(Infinity, 1/Math.max(-0, ZERO)); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 118 | |
| 119 | function run(crankshaft_test) { |
| 120 | crankshaft_test(1); |
| 121 | crankshaft_test(1); |
| 122 | %OptimizeFunctionOnNextCall(crankshaft_test); |
| 123 | crankshaft_test(-0); |
| 124 | } |
| 125 | |
| 126 | function crankshaft_test_1(arg) { |
| 127 | var v1 = 1; |
| 128 | var v2 = 5; |
| 129 | var v3 = 1.5; |
| 130 | var v4 = 5.5; |
| 131 | var v5 = 2; |
| 132 | var v6 = 6; |
| 133 | var v7 = 0; |
| 134 | var v8 = -0; |
| 135 | |
| 136 | var v9 = 9.9; |
| 137 | var v0 = 10.1; |
| 138 | // Integer32 representation. |
| 139 | assertEquals(v2, Math.max(v1++, v2++)); |
| 140 | assertEquals(v1, Math.min(v1++, v2++)); |
| 141 | // Tagged representation. |
| 142 | assertEquals(v4, Math.max(v3, v4)); |
| 143 | assertEquals(v3, Math.min(v3, v4)); |
| 144 | assertEquals(v6, Math.max(v5, v6)); |
| 145 | assertEquals(v5, Math.min(v5, v6)); |
| 146 | // Double representation. |
| 147 | assertEquals(v0, Math.max(v0++, v9++)); |
| 148 | assertEquals(v9, Math.min(v0++, v9++)); |
| 149 | // Mixed representation. |
| 150 | assertEquals(v1, Math.min(v1++, v9++)); // int32, double |
| 151 | assertEquals(v0, Math.max(v0++, v2++)); // double, int32 |
| 152 | assertEquals(v1, Math.min(v1++, v6)); // int32, tagged |
| 153 | assertEquals(v2, Math.max(v5, v2++)); // tagged, int32 |
| 154 | assertEquals(v6, Math.min(v6, v9++)); // tagged, double |
| 155 | assertEquals(v0, Math.max(v0++, v5)); // double, tagged |
| 156 | |
| 157 | // Minus zero. |
| 158 | assertEquals(Infinity, 1/Math.max(v7, v8)); |
| 159 | assertEquals(-Infinity, 1/Math.min(v7, v8)); |
| 160 | // NaN. |
| 161 | assertEquals(NaN, Math.max(NaN, v8)); |
| 162 | assertEquals(NaN, Math.min(NaN, v9)); |
| 163 | assertEquals(NaN, Math.max(v8, NaN)); |
| 164 | assertEquals(NaN, Math.min(v9, NaN)); |
| 165 | // Minus zero as Integer32. |
| 166 | assertEquals((arg === -0) ? -Infinity : 1, 1/Math.min(arg, v2)); |
| 167 | } |
| 168 | |
| 169 | run(crankshaft_test_1); |
| 170 | |
| 171 | function crankshaft_test_2() { |
| 172 | var v9 = {}; |
| 173 | v9.valueOf = function() { return 6; } |
| 174 | // Deopt expected due to non-heapnumber objects. |
| 175 | assertEquals(6, Math.min(v9, 12)); |
| 176 | } |
| 177 | |
| 178 | run(crankshaft_test_2); |
| 179 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 180 | var o = { a: 1, b: 2 }; |
| 181 | |
| 182 | // Test smi-based Math.min. |
| 183 | function f(o) { |
| 184 | return Math.min(o.a, o.b); |
| 185 | } |
| 186 | |
| 187 | assertEquals(1, f(o)); |
| 188 | assertEquals(1, f(o)); |
| 189 | %OptimizeFunctionOnNextCall(f); |
| 190 | assertEquals(1, f(o)); |
| 191 | o.a = 5; |
| 192 | o.b = 4; |
| 193 | assertEquals(4, f(o)); |
| 194 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 195 | // Test overriding Math.min and Math.max |
| 196 | Math.min = function(a, b) { return a + b; } |
| 197 | Math.max = function(a, b) { return a - b; } |
| 198 | |
| 199 | function crankshaft_test_3() { |
| 200 | assertEquals(8, Math.min(3, 5)); |
| 201 | assertEquals(3, Math.max(5, 2)); |
| 202 | } |
| 203 | |
| 204 | run(crankshaft_test_3); |