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Polynomial (Java Machine Learning Library 0.0.11)
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net.sf.javaml.utils</FONT>
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Class Polynomial</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.javaml.utils.Polynomial</B>
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<DT><PRE>public class <B>Polynomial</B><DT>extends java.lang.Object</DL>
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<P>
Polynomial functions.
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/utils/Polynomial.html#Polynomial()">Polynomial</A></B>()</CODE>
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Makes this class non instantiable, but still let's others inherit from it.</TD>
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<CODE>static double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/utils/Polynomial.html#p1evl(double, double[], int)">p1evl</A></B>(double x,
double[] coef,
int N)</CODE>
<BR>
Evaluates the given polynomial of degree <tt>N</tt> at <tt>x</tt>, assuming coefficient of N is 1.0.</TD>
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<CODE>static double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/utils/Polynomial.html#polevl(double, double[], int)">polevl</A></B>(double x,
double[] coef,
int N)</CODE>
<BR>
Evaluates the given polynomial of degree <tt>N</tt> at <tt>x</tt>.</TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="Polynomial()"><!-- --></A><H3>
Polynomial</H3>
<PRE>
protected <B>Polynomial</B>()</PRE>
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<DD>Makes this class non instantiable, but still let's others inherit from it.
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<A NAME="p1evl(double, double[], int)"><!-- --></A><H3>
p1evl</H3>
<PRE>
public static double <B>p1evl</B>(double x,
double[] coef,
int N)
throws java.lang.ArithmeticException</PRE>
<DL>
<DD>Evaluates the given polynomial of degree <tt>N</tt> at <tt>x</tt>, assuming coefficient of N is 1.0. Otherwise same as <tt>polevl()</tt>. <pre> 2 N y = C + C x + C x +...+ C x 0 1 2 N where C = 1 and hence is omitted from the array. N Coefficients are stored in reverse order: coef[0] = C , ..., coef[N-1] = C . N-1 0 Calling arguments are otherwise the same as polevl(). </pre> In the interest of speed, there are no checks for out of bounds arithmetic.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - argument to the polynomial.<DD><CODE>coef</CODE> - the coefficients of the polynomial.<DD><CODE>N</CODE> - the degree of the polynomial.
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE></DL>
</DD>
</DL>
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<A NAME="polevl(double, double[], int)"><!-- --></A><H3>
polevl</H3>
<PRE>
public static double <B>polevl</B>(double x,
double[] coef,
int N)
throws java.lang.ArithmeticException</PRE>
<DL>
<DD>Evaluates the given polynomial of degree <tt>N</tt> at <tt>x</tt>. <pre> 2 N y = C + C x + C x +...+ C x 0 1 2 N Coefficients are stored in reverse order: coef[0] = C , ..., coef[N] = C . N 0 </pre> In the interest of speed, there are no checks for out of bounds arithmetic.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - argument to the polynomial.<DD><CODE>coef</CODE> - the coefficients of the polynomial.<DD><CODE>N</CODE> - the degree of the polynomial.
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArithmeticException</CODE></DL>
</DD>
</DL>
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