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Landing the last 3 SunSpider tests (Cordic, RegExp DNA, TagCloud).
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John Resig
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Dec 3, 2008
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/* | ||
* Copyright (C) Rich Moore. All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions | ||
* are met: | ||
* 1. Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* 2. Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in the | ||
* documentation and/or other materials provided with the distribution. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY | ||
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | ||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | ||
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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/////. Start CORDIC | ||
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var AG_CONST = 0.6072529350; | ||
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function FIXED(X) | ||
{ | ||
return X * 65536.0; | ||
} | ||
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function FLOAT(X) | ||
{ | ||
return X / 65536.0; | ||
} | ||
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function DEG2RAD(X) | ||
{ | ||
return 0.017453 * (X); | ||
} | ||
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var Angles = [ | ||
FIXED(45.0), FIXED(26.565), FIXED(14.0362), FIXED(7.12502), | ||
FIXED(3.57633), FIXED(1.78991), FIXED(0.895174), FIXED(0.447614), | ||
FIXED(0.223811), FIXED(0.111906), FIXED(0.055953), | ||
FIXED(0.027977) | ||
]; | ||
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function cordicsincos() { | ||
var X; | ||
var Y; | ||
var TargetAngle; | ||
var CurrAngle; | ||
var Step; | ||
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X = FIXED(AG_CONST); /* AG_CONST * cos(0) */ | ||
Y = 0; /* AG_CONST * sin(0) */ | ||
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TargetAngle = FIXED(28.027); | ||
CurrAngle = 0; | ||
for (Step = 0; Step < 12; Step++) { | ||
var NewX; | ||
if (TargetAngle > CurrAngle) { | ||
NewX = X - (Y >> Step); | ||
Y = (X >> Step) + Y; | ||
X = NewX; | ||
CurrAngle += Angles[Step]; | ||
} else { | ||
NewX = X + (Y >> Step); | ||
Y = -(X >> Step) + Y; | ||
X = NewX; | ||
CurrAngle -= Angles[Step]; | ||
} | ||
} | ||
} | ||
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///// End CORDIC | ||
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function cordic( runs ) { | ||
for ( var i = 0 ; i < runs ; i++ ) { | ||
cordicsincos(); | ||
} | ||
} | ||
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startTest("sunspider-math-cordic"); | ||
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test("Cordic", function(){ | ||
cordic(2500); | ||
}); | ||
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endTest(); |
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