/*
*
* Copyright (c) 1997-1999 Scott Oaks and Henry Wong. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and
* without fee is hereby granted.
*
* This sample source code is provided for example only,
* on an unsupported, as-is basis.
*
* AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. AUTHOR SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*
* THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
* CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
* PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
* NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
* SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
* SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
* PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). AUTHOR
* SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
* HIGH RISK ACTIVITIES.
*/
public class LoopInterchanged implements ScaleTester {
private float lookupValues[][];
private int nRows, nCols, nThreads;
private class LoopInterchangedHandler extends LoopHandler {
LoopInterchangedHandler(int nc, int nt) {
super(0, nc, nt);
}
public void loopDoRange(int start, int end) {
for (int i = start; i < end; i++) {
lookupValues[0][i] = 0;
}
for (int i = start; i < end; i++) {
for (int j = 1; j < nRows; j++) {
float sinValue = (float)Math.sin((i % 360)*Math.PI/180.0);
lookupValues[j][i] = sinValue * (float)i / 180.0f;
lookupValues[j][i] += lookupValues[j-1][i]*(float)j/180.0f;
}
}
}
}
public void init(int nRows, int nCols, int nThreads) {
this.nRows = nRows;
this.nCols = nCols;
this.nThreads = nThreads;
lookupValues = new float[nRows][];
for (int j = 0; j < nRows; j++) {
lookupValues[j] = new float[nCols];
}
}
public float[][] doCalc() {
LoopInterchangedHandler loop = new LoopInterchangedHandler(nCols, nThreads);
loop.loopProcess();
return lookupValues;
}
}
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