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| (Empty) | |
| 1 <html> |
| 2 <head> |
| 3 <script src="../htmlrunner.js"></script> |
| 4 <script> |
| 5 /* |
| 6 * Copyright (C) Rich Moore. All rights reserved. |
| 7 * |
| 8 * Redistribution and use in source and binary forms, with or without |
| 9 * modification, are permitted provided that the following conditions |
| 10 * are met: |
| 11 * 1. Redistributions of source code must retain the above copyright |
| 12 * notice, this list of conditions and the following disclaimer. |
| 13 * 2. Redistributions in binary form must reproduce the above copyright |
| 14 * notice, this list of conditions and the following disclaimer in the |
| 15 * documentation and/or other materials provided with the distribution. |
| 16 * |
| 17 * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY |
| 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 25 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 */ |
| 29 |
| 30 /////. Start CORDIC |
| 31 |
| 32 var AG_CONST = 0.6072529350; |
| 33 |
| 34 function FIXED(X) |
| 35 { |
| 36 return X * 65536.0; |
| 37 } |
| 38 |
| 39 function FLOAT(X) |
| 40 { |
| 41 return X / 65536.0; |
| 42 } |
| 43 |
| 44 function DEG2RAD(X) |
| 45 { |
| 46 return 0.017453 * (X); |
| 47 } |
| 48 |
| 49 var Angles = [ |
| 50 FIXED(45.0), FIXED(26.565), FIXED(14.0362), FIXED(7.12502), |
| 51 FIXED(3.57633), FIXED(1.78991), FIXED(0.895174), FIXED(0.447614), |
| 52 FIXED(0.223811), FIXED(0.111906), FIXED(0.055953), |
| 53 FIXED(0.027977) |
| 54 ]; |
| 55 |
| 56 |
| 57 function cordicsincos() { |
| 58 var X; |
| 59 var Y; |
| 60 var TargetAngle; |
| 61 var CurrAngle; |
| 62 var Step; |
| 63 |
| 64 X = FIXED(AG_CONST); /* AG_CONST * cos(0) */ |
| 65 Y = 0; /* AG_CONST * sin(0) */ |
| 66 |
| 67 TargetAngle = FIXED(28.027); |
| 68 CurrAngle = 0; |
| 69 for (Step = 0; Step < 12; Step++) { |
| 70 var NewX; |
| 71 if (TargetAngle > CurrAngle) { |
| 72 NewX = X - (Y >> Step); |
| 73 Y = (X >> Step) + Y; |
| 74 X = NewX; |
| 75 CurrAngle += Angles[Step]; |
| 76 } else { |
| 77 NewX = X + (Y >> Step); |
| 78 Y = -(X >> Step) + Y; |
| 79 X = NewX; |
| 80 CurrAngle -= Angles[Step]; |
| 81 } |
| 82 } |
| 83 } |
| 84 |
| 85 ///// End CORDIC |
| 86 |
| 87 function cordic( runs ) { |
| 88 for ( var i = 0 ; i < runs ; i++ ) { |
| 89 cordicsincos(); |
| 90 } |
| 91 } |
| 92 |
| 93 window.onload = function(){ startTest("sunspider-math-cordic", ''); |
| 94 |
| 95 test("Cordic", function(){ |
| 96 cordic(2500); |
| 97 }); |
| 98 |
| 99 endTest(); }; |
| 100 </script> |
| 101 </head> |
| 102 <body></body> |
| 103 </html> |
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Chromium Code Reviews
Issue 269054:
Importing dromaeo performance tests to src/chrome/test/data.... (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/