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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 |
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| 149 var preliminary = sum + summand; | 149 var preliminary = sum + summand; |
| 150 compensation = (preliminary - sum) - summand; | 150 compensation = (preliminary - sum) - summand; |
| 151 sum = preliminary; | 151 sum = preliminary; |
| 152 } | 152 } |
| 153 return MathSqrt(sum) * max; | 153 return MathSqrt(sum) * max; |
| 154 } | 154 } |
| 155 | 155 |
| 156 | 156 |
| 157 // ES6 draft 09-27-13, section 20.2.2.16. | 157 // ES6 draft 09-27-13, section 20.2.2.16. |
| 158 function MathFround(x) { | 158 function MathFround(x) { |
| 159 return %Math_fround(TO_NUMBER_INLINE(x)); | 159 return %MathFround(TO_NUMBER_INLINE(x)); |
| 160 } | 160 } |
| 161 | 161 |
| 162 | 162 |
| 163 function MathClz32(x) { | 163 function MathClz32(x) { |
| 164 x = ToUint32(TO_NUMBER_INLINE(x)); | 164 x = ToUint32(TO_NUMBER_INLINE(x)); |
| 165 if (x == 0) return 32; | 165 if (x == 0) return 32; |
| 166 var result = 0; | 166 var result = 0; |
| 167 // Binary search. | 167 // Binary search. |
| 168 if ((x & 0xFFFF0000) === 0) { x <<= 16; result += 16; }; | 168 if ((x & 0xFFFF0000) === 0) { x <<= 16; result += 16; }; |
| 169 if ((x & 0xFF000000) === 0) { x <<= 8; result += 8; }; | 169 if ((x & 0xFF000000) === 0) { x <<= 8; result += 8; }; |
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| 260 "fround", MathFround, | 260 "fround", MathFround, |
| 261 "clz32", MathClz32, | 261 "clz32", MathClz32, |
| 262 "cbrt", MathCbrt, | 262 "cbrt", MathCbrt, |
| 263 "log1p", MathLog1p, | 263 "log1p", MathLog1p, |
| 264 "expm1", MathExpm1 | 264 "expm1", MathExpm1 |
| 265 )); | 265 )); |
| 266 } | 266 } |
| 267 | 267 |
| 268 | 268 |
| 269 ExtendMath(); | 269 ExtendMath(); |
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