/*
* Copyright ( c ) 2009 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/**
* @ test
* @ bug 6855215
* @ summary Calculation error ( NaN ) after about 1500 calculations
*
* @ run main / othervm - Xbatch - XX : + IgnoreUnrecognizedVMOptions - XX : UseSSE = 0 compiler . c1 . Test6855215
*/
package compiler.c1;
public class Test6855215 {
private double m;
private double b;
public static double log10(double x) {
return Math.log(x) / Math.log(10 );
}
void calcMapping(double xmin, double xmax, double ymin, double ymax) {
m = (ymax - ymin) / (log10(xmax) - log10(xmin));
b = (log10(xmin) * ymax - log10(xmax) * ymin);
}
public static void main(String[] args) {
Test6855215 c = new Test6855215();
for (int i = 0 ; i < 30000 ; i++) {
c.calcMapping(91 , 121 , 177 , 34 );
if (c.m != c.m) {
throw new InternalError();
}
}
}
}
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