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Polynomial (Colt 1.2.0 - API Specification)
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cern.jet.math
 
Class Polynomial</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
 <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../cern/jet/math/Constants.html" title="class in cern.jet.math">cern.jet.math.Constants</A>
 <IMG SRC="../../../resources/inherit.gif" ALT="extended by">cern.jet.math.Polynomial
</PRE>
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<DL>
<DT>public class Polynomial<DT>extends <A HREF="../../../cern/jet/math/Constants.html" title="class in cern.jet.math">Constants</A></DL>

Polynomial functions.

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Method Summary</TD>
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<CODE>static&nbsp;double</CODE></TD>
<TD><CODE><A HREF="../../../cern/jet/math/Polynomial.html#p1evl(double, double[], int)">p1evl</A>(double&nbsp;x,
 double[]&nbsp;coef,
 int&nbsp;N)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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&nbsp;double</CODE></TD>
<TD><CODE><A HREF="../../../cern/jet/math/Polynomial.html#polevl(double, double[], int)">polevl</A>(double&nbsp;x,
 double[]&nbsp;coef,
 int&nbsp;N)</CODE>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Evaluates the given polynomial of degree <tt>N</tt> at <tt>x</tt>.</TD>
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<A NAME="p1evl(double, double[], int)"></A><H3>
p1evl</H3>
<PRE>
public static double p1evl(double&nbsp;x,
 double[]&nbsp;coef,
 int&nbsp;N)
 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArithmeticException.html" title="class or interface in java.lang">ArithmeticException</A></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.

<DD><DL>
<DT>Parameters:<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>Throws:
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArithmeticException.html" title="class or interface in java.lang">ArithmeticException</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="polevl(double, double[], int)"></A><H3>
polevl</H3>
<PRE>
public static double polevl(double&nbsp;x,
 double[]&nbsp;coef,
 int&nbsp;N)
 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArithmeticException.html" title="class or interface in java.lang">ArithmeticException</A></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.

<DD><DL>
<DT>Parameters:<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>Throws:
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ArithmeticException.html" title="class or interface in java.lang">ArithmeticException</A></CODE></DL>
</DD>
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