JMSLTM Numerical Library 6.1

com.imsl.math
Interface NumericalDerivatives.Function

All Known Subinterfaces:
NumericalDerivatives.Jacobian
Enclosing class:
NumericalDerivatives

public static interface NumericalDerivatives.Function

Public interface function.


Method Summary
 double[] f(int varIndex, double[] y)
          Returns the equations evaluated at the point y.
 

Method Detail

f

double[] f(int varIndex,
           double[] y)
Returns the equations evaluated at the point y. If the user does not override the evaluateF method, then f is also used to compute the function values at the current independent variable values y_e.

Parameters:
varIndex - an int indicating the index of the variable to perturb. varIndex = 1 indicates variable 1 in y[0].
y - a double array of length n, the point at which the Jacobian is to be evaluated.
Returns:
a double array of length m. The equations evaluated at the point y.

JMSLTM Numerical Library 6.1

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Built July 30 2010.