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
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.
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13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
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
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21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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.
28 // Flags: --allow-natives-syntax
32 assertEquals(Infinity, Math.min());
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));
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));
43 // Prepare a non-Smi zero value.
44 function returnsNonSmi(){ return 0.25; }
45 var ZERO = (function() {
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();
55 assertEquals(0, ZERO);
56 assertEquals(Infinity, 1/ZERO);
57 assertEquals(-Infinity, 1/-ZERO);
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
62 assertFalse(%_IsSmi(-ZERO));
65 o.valueOf = function() { return 1; };
66 assertEquals(1, Math.min(2, 3, '1'));
67 assertEquals(1, Math.min(3, o, 2));
68 assertEquals(1, Math.min(o, 2));
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));
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));
79 assertEquals(NaN, Math.min('oxen'));
80 assertEquals(NaN, Math.min('oxen', 1));
81 assertEquals(NaN, Math.min(1, 'oxen'));
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));
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));
98 o.valueOf = function() { return 3; };
99 assertEquals(3, Math.max(2, '3', 1));
100 assertEquals(3, Math.max(1, o, 2));
101 assertEquals(3, Math.max(o, 1));
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));
108 assertEquals(1, Math.max(+0, -0, +1));
109 assertEquals(1, Math.max(+1, +0, -0));
110 assertEquals(1, Math.max(+0, +1, -0));
111 assertEquals(1, Math.max(-0, +1, +0));
112 assertEquals(NaN, Math.max('oxen'));
113 assertEquals(NaN, Math.max('oxen', 1));
114 assertEquals(NaN, Math.max(1, 'oxen'));
116 assertEquals(Infinity, 1/Math.max(ZERO, -0));
117 assertEquals(Infinity, 1/Math.max(-0, ZERO));
119 function run(crankshaft_test) {
122 %OptimizeFunctionOnNextCall(crankshaft_test);
126 function crankshaft_test_1(arg) {
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
158 assertEquals(Infinity, 1/Math.max(v7, v8));
159 assertEquals(-Infinity, 1/Math.min(v7, v8));
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));
169 run(crankshaft_test_1);
171 function crankshaft_test_2() {
173 v9.valueOf = function() { return 6; }
174 // Deopt expected due to non-heapnumber objects.
175 assertEquals(6, Math.min(v9, 12));
178 run(crankshaft_test_2);
180 var o = { a: 1, b: 2 };
182 // Test smi-based Math.min.
184 return Math.min(o.a, o.b);
187 assertEquals(1, f(o));
188 assertEquals(1, f(o));
189 %OptimizeFunctionOnNextCall(f);
190 assertEquals(1, f(o));
193 assertEquals(4, f(o));
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; }
199 function crankshaft_test_3() {
200 assertEquals(8, Math.min(3, 5));
201 assertEquals(3, Math.max(5, 2));
204 run(crankshaft_test_3);