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SSJ V. 1.2.5. |
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java.lang.Objectumontreal.iro.lecuyer.util.Misc
public class Misc
This class provides miscellaneous functions that are hard to classify. Some may be moved to another class in the future.
| Method Summary | |
|---|---|
static double |
evalPoly(int n,
double[] X,
double[] C,
double z)
Given n, X and C as described in interpol(n, X, Y, C),
this function returns the value of the interpolating polynomial evaluated at z. |
static int |
getTimeInterval(double[] times,
int start,
int end,
double t)
Returns the index of the time interval corresponding to time t. |
static void |
interpol(int n,
double[] X,
double[] Y,
double[] C)
. |
static double |
quickSelect(double[] t,
int n,
int k)
Returns the kth smallest item of the array t of size n. |
static int |
quickSelect(int[] t,
int n,
int k)
Returns the kth smallest item of the array t of size n. |
static double |
simpsonIntegral(MathFunction func,
double a,
double b,
int numIntervals)
Computes and returns an approximation of the integral of func over [a, b], using the Simpsons 1/3 method with numIntervals intervals. |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public static double quickSelect(double[] t,
int n,
int k)
t - the array which contain the itemsn - the number of items in the arrayk - the index of the smallest item
public static int quickSelect(int[] t,
int n,
int k)
t - the array which contain the itemsn - the number of items in the arrayk - the index of the smallest item
public static int getTimeInterval(double[] times,
int start,
int end,
double t)
times - an array of simulation times.start - the first index in the array to consider.end - the last index (inclusive) in the array to consider.t - the queried simulation time.
NullPointerException - if times is null.
IllegalArgumentException - if start is negative,
or if end is smaller than start.
ArrayIndexOutOfBoundsException - if start + end
is greater than or equal to the length of times.
public static void interpol(int n,
double[] X,
double[] Y,
double[] C)
n - degree of the interpolating polynomialX - x-coordinates of pointsY - y-coordinates of pointsC - Coefficients of the interpolating polynomial
public static double evalPoly(int n,
double[] X,
double[] C,
double z)
interpol(n, X, Y, C),
this function returns the value of the interpolating polynomial evaluated at z.
n - degree of the interpolating polynomialX - x-coordinates of pointsC - Coefficients of the interpolating polynomialz - x-coordinate where polynomial is evaluated
public static double simpsonIntegral(MathFunction func,
double a,
double b,
int numIntervals)
(f (a) + 4f (a + h) + 2f (a + 2h) + 4f (a + 3h) + ... + f (b))
func - the function being integrated.a - the left boundb - the right bound.numIntervals - the number of intervals.
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SSJ V. 1.2.5. |
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