Also, the file 'ResizableDoubleArray.java' in the package 'org.apache.commons.math.util' contains the following code:
>if (contraction < expansion) { > throw MathRuntimeException.createIllegalArgumentException( > LocalizedFormats.CONTRACTION_CRITERIA_SMALLER_THAN_EXPANSION_FACTOR, > contraction, expansion); >} This case is similar with the second one that i mention in my previous mail. So i believe that we need a new class that is going to implement the fact that lower has exceeded the upper... I would like to hear from you about this issue. Thanks a lot! Best regards, Michael Giannakopoulos