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java.lang.Objectorg.apache.mahout.math.jet.math.Polynomial
public final class Polynomial
Polynomial functions.
| Method Summary | |
|---|---|
static double |
p1evl(double x,
double[] coef,
int N)
Evaluates the given polynomial of degree N at x, assuming coefficient of N is 1.0. |
static double |
polevl(double x,
double[] coef,
int N)
Evaluates the given polynomial of degree N at x. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public static double p1evl(double x,
double[] coef,
int N)
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().
In the interest of speed, there are no checks for out of bounds arithmetic.
x - argument to the polynomial.coef - the coefficients of the polynomial.N - the degree of the polynomial.
public static double polevl(double x,
double[] coef,
int N)
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
In the interest of speed, there are no checks for out of bounds arithmetic.
x - argument to the polynomial.coef - the coefficients of the polynomial.N - the degree of the polynomial.
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