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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
| 28 // This file relies on the fact that the following declarations have been made |
| 29 // in runtime.js: |
| 30 // var $Object = global.Object; |
28 | 31 |
29 // Keep reference to original values of some global properties. This | 32 // Keep reference to original values of some global properties. This |
30 // has the added benefit that the code in this file is isolated from | 33 // has the added benefit that the code in this file is isolated from |
31 // changes to these properties. | 34 // changes to these properties. |
32 var $floor = MathFloor; | 35 var $floor = MathFloor; |
33 var $abs = MathAbs; | 36 var $abs = MathAbs; |
34 | 37 |
35 // Instance class name can only be set on functions. That is the only | 38 // Instance class name can only be set on functions. That is the only |
36 // purpose for MathConstructor. | 39 // purpose for MathConstructor. |
37 function MathConstructor() {} | 40 function MathConstructor() {} |
38 %FunctionSetInstanceClassName(MathConstructor, 'Math'); | |
39 var $Math = new MathConstructor(); | 41 var $Math = new MathConstructor(); |
40 %SetPrototype($Math, $Object.prototype); | 42 |
41 %SetProperty(global, "Math", $Math, DONT_ENUM); | 43 // ------------------------------------------------------------------- |
42 | 44 |
43 // ECMA 262 - 15.8.2.1 | 45 // ECMA 262 - 15.8.2.1 |
44 function MathAbs(x) { | 46 function MathAbs(x) { |
45 if (%_IsSmi(x)) return x >= 0 ? x : -x; | 47 if (%_IsSmi(x)) return x >= 0 ? x : -x; |
46 if (!IS_NUMBER(x)) x = NonNumberToNumber(x); | 48 if (!IS_NUMBER(x)) x = NonNumberToNumber(x); |
47 if (x === 0) return 0; // To handle -0. | 49 if (x === 0) return 0; // To handle -0. |
48 return x > 0 ? x : -x; | 50 return x > 0 ? x : -x; |
49 } | 51 } |
50 | 52 |
51 // ECMA 262 - 15.8.2.2 | 53 // ECMA 262 - 15.8.2.2 |
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209 function MathTan(x) { | 211 function MathTan(x) { |
210 if (!IS_NUMBER(x)) x = NonNumberToNumber(x); | 212 if (!IS_NUMBER(x)) x = NonNumberToNumber(x); |
211 return %_MathTan(x); | 213 return %_MathTan(x); |
212 } | 214 } |
213 | 215 |
214 | 216 |
215 // ------------------------------------------------------------------- | 217 // ------------------------------------------------------------------- |
216 | 218 |
217 function SetUpMath() { | 219 function SetUpMath() { |
218 %CheckIsBootstrapping(); | 220 %CheckIsBootstrapping(); |
| 221 |
| 222 %SetPrototype($Math, $Object.prototype); |
| 223 %SetProperty(global, "Math", $Math, DONT_ENUM); |
| 224 %FunctionSetInstanceClassName(MathConstructor, 'Math'); |
| 225 |
219 // Set up math constants. | 226 // Set up math constants. |
220 // ECMA-262, section 15.8.1.1. | 227 // ECMA-262, section 15.8.1.1. |
221 %OptimizeObjectForAddingMultipleProperties($Math, 8); | 228 %OptimizeObjectForAddingMultipleProperties($Math, 8); |
222 %SetProperty($Math, | 229 %SetProperty($Math, |
223 "E", | 230 "E", |
224 2.7182818284590452354, | 231 2.7182818284590452354, |
225 DONT_ENUM | DONT_DELETE | READ_ONLY); | 232 DONT_ENUM | DONT_DELETE | READ_ONLY); |
226 // ECMA-262, section 15.8.1.2. | 233 // ECMA-262, section 15.8.1.2. |
227 %SetProperty($Math, | 234 %SetProperty($Math, |
228 "LN10", | 235 "LN10", |
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274 "sqrt", MathSqrt, | 281 "sqrt", MathSqrt, |
275 "tan", MathTan, | 282 "tan", MathTan, |
276 "atan2", MathAtan2, | 283 "atan2", MathAtan2, |
277 "pow", MathPow, | 284 "pow", MathPow, |
278 "max", MathMax, | 285 "max", MathMax, |
279 "min", MathMin | 286 "min", MathMin |
280 )); | 287 )); |
281 } | 288 } |
282 | 289 |
283 SetUpMath(); | 290 SetUpMath(); |
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