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| 1 <!DOCTYPE html> |
| 2 <head> |
| 3 <!-- |
| 4 Copyright (C) 2007 Apple Inc. All rights reserved. |
| 5 |
| 6 Redistribution and use in source and binary forms, with or without |
| 7 modification, are permitted provided that the following conditions |
| 8 are met: |
| 9 1. Redistributions of source code must retain the above copyright |
| 10 notice, this list of conditions and the following disclaimer. |
| 11 2. Redistributions in binary form must reproduce the above copyright |
| 12 notice, this list of conditions and the following disclaimer in the |
| 13 documentation and/or other materials provided with the distribution. |
| 14 |
| 15 THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| 16 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 18 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 19 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 22 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 23 OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 24 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 --> |
| 27 |
| 28 <title>SunSpider math-cordic</title> |
| 29 <link rel="stylesheet" href="sunspider.css"> |
| 30 </head> |
| 31 |
| 32 <body> |
| 33 <h3>math-cordic</h3> |
| 34 <div id="console"> |
| 35 </div> |
| 36 <script src="sunspider-record-result.js"></script> |
| 37 <script> |
| 38 |
| 39 var _sunSpiderStartDate = new Date(); |
| 40 |
| 41 /* |
| 42 * Copyright (C) Rich Moore. All rights reserved. |
| 43 * |
| 44 * Redistribution and use in source and binary forms, with or without |
| 45 * modification, are permitted provided that the following conditions |
| 46 * are met: |
| 47 * 1. Redistributions of source code must retain the above copyright |
| 48 * notice, this list of conditions and the following disclaimer. |
| 49 * 2. Redistributions in binary form must reproduce the above copyright |
| 50 * notice, this list of conditions and the following disclaimer in the |
| 51 * documentation and/or other materials provided with the distribution. |
| 52 * |
| 53 * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY |
| 54 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 56 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 57 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 58 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 59 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 60 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 61 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 64 */ |
| 65 |
| 66 /////. Start CORDIC |
| 67 |
| 68 var AG_CONST = 0.6072529350; |
| 69 |
| 70 function FIXED(X) |
| 71 { |
| 72 return X * 65536.0; |
| 73 } |
| 74 |
| 75 function FLOAT(X) |
| 76 { |
| 77 return X / 65536.0; |
| 78 } |
| 79 |
| 80 function DEG2RAD(X) |
| 81 { |
| 82 return 0.017453 * (X); |
| 83 } |
| 84 |
| 85 var Angles = [ |
| 86 FIXED(45.0), FIXED(26.565), FIXED(14.0362), FIXED(7.12502), |
| 87 FIXED(3.57633), FIXED(1.78991), FIXED(0.895174), FIXED(0.447614), |
| 88 FIXED(0.223811), FIXED(0.111906), FIXED(0.055953), |
| 89 FIXED(0.027977) |
| 90 ]; |
| 91 |
| 92 |
| 93 function cordicsincos() { |
| 94 var X; |
| 95 var Y; |
| 96 var TargetAngle; |
| 97 var CurrAngle; |
| 98 var Step; |
| 99 |
| 100 X = FIXED(AG_CONST); /* AG_CONST * cos(0) */ |
| 101 Y = 0; /* AG_CONST * sin(0) */ |
| 102 |
| 103 TargetAngle = FIXED(28.027); |
| 104 CurrAngle = 0; |
| 105 for (Step = 0; Step < 12; Step++) { |
| 106 var NewX; |
| 107 if (TargetAngle > CurrAngle) { |
| 108 NewX = X - (Y >> Step); |
| 109 Y = (X >> Step) + Y; |
| 110 X = NewX; |
| 111 CurrAngle += Angles[Step]; |
| 112 } else { |
| 113 NewX = X + (Y >> Step); |
| 114 Y = -(X >> Step) + Y; |
| 115 X = NewX; |
| 116 CurrAngle -= Angles[Step]; |
| 117 } |
| 118 } |
| 119 } |
| 120 |
| 121 ///// End CORDIC |
| 122 |
| 123 function cordic( runs ) { |
| 124 var start = new Date(); |
| 125 |
| 126 for ( var i = 0 ; i < runs ; i++ ) { |
| 127 cordicsincos(); |
| 128 } |
| 129 |
| 130 var end = new Date(); |
| 131 |
| 132 return end.getTime() - start.getTime(); |
| 133 } |
| 134 |
| 135 cordic(25000); |
| 136 |
| 137 |
| 138 var _sunSpiderInterval = new Date() - _sunSpiderStartDate; |
| 139 |
| 140 record(_sunSpiderInterval); |
| 141 </script> |
| 142 |
| 143 |
| 144 </body> |
| 145 </html> |
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Chromium Code Reviews
Issue 42549:
Add a copy of SunSpider 0.9 for performance testing.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/