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146 lines
4.2 KiB
HTML
146 lines
4.2 KiB
HTML
<!DOCTYPE html>
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<head>
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<!--
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Copyright (C) 2007 Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<title>SunSpider math-cordic</title>
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</head>
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<body>
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<h3>math-cordic</h3>
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<div id="console">
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</div>
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<script>
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var _sunSpiderStartDate = new Date();
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/*
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* Copyright (C) Rich Moore. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/////. Start CORDIC
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var AG_CONST = 0.6072529350;
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function FIXED(X)
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{
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return X * 65536.0;
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}
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function FLOAT(X)
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{
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return X / 65536.0;
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}
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function DEG2RAD(X)
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{
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return 0.017453 * (X);
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}
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var Angles = [
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FIXED(45.0), FIXED(26.565), FIXED(14.0362), FIXED(7.12502),
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FIXED(3.57633), FIXED(1.78991), FIXED(0.895174), FIXED(0.447614),
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FIXED(0.223811), FIXED(0.111906), FIXED(0.055953),
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FIXED(0.027977)
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];
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function cordicsincos() {
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var X;
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var Y;
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var TargetAngle;
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var CurrAngle;
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var Step;
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X = FIXED(AG_CONST); /* AG_CONST * cos(0) */
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Y = 0; /* AG_CONST * sin(0) */
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TargetAngle = FIXED(28.027);
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CurrAngle = 0;
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for (Step = 0; Step < 12; Step++) {
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var NewX;
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if (TargetAngle > CurrAngle) {
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NewX = X - (Y >> Step);
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Y = (X >> Step) + Y;
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X = NewX;
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CurrAngle += Angles[Step];
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} else {
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NewX = X + (Y >> Step);
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Y = -(X >> Step) + Y;
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X = NewX;
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CurrAngle -= Angles[Step];
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}
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}
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}
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///// End CORDIC
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function cordic( runs ) {
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var start = new Date();
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for ( var i = 0 ; i < runs ; i++ ) {
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cordicsincos();
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}
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var end = new Date();
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return end.getTime() - start.getTime();
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}
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cordic(25000);
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var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
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document.getElementById("console").innerHTML = _sunSpiderInterval;
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</script>
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</body>
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</html>
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