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| <h2 title="Interface SecondaryEquations" class="title">Interface SecondaryEquations</h2> |
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| <pre>public interface <span class="strong">SecondaryEquations</span></pre> |
| <div class="block">This interface allows users to add secondary differential equations to a primary |
| set of differential equations. |
| <p> |
| In some cases users may need to integrate some problem-specific equations along |
| with a primary set of differential equations. One example is optimal control where |
| adjoined parameters linked to the minimized hamiltonian must be integrated. |
| </p> |
| <p> |
| This interface allows users to add such equations to a primary set of <a href="../../../../../org/apache/commons/math3/ode/FirstOrderDifferentialEquations.html" title="interface in org.apache.commons.math3.ode"><code>first order differential equations</code></a> |
| thanks to the <a href="../../../../../org/apache/commons/math3/ode/ExpandableStatefulODE.html#addSecondaryEquations(org.apache.commons.math3.ode.SecondaryEquations)"><code>ExpandableStatefulODE.addSecondaryEquations(SecondaryEquations)</code></a> |
| method. |
| </p></div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>3.0</dd> |
| <dt><span class="strong">Version:</span></dt> |
| <dd>$Id: SecondaryEquations.java 1416643 2012-12-03 19:37:14Z tn $</dd> |
| <dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/commons/math3/ode/ExpandableStatefulODE.html" title="class in org.apache.commons.math3.ode"><code>ExpandableStatefulODE</code></a></dd></dl> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/ode/SecondaryEquations.html#computeDerivatives(double, double[], double[], double[], double[])">computeDerivatives</a></strong>(double t, |
| double[] primary, |
| double[] primaryDot, |
| double[] secondary, |
| double[] secondaryDot)</code> |
| <div class="block">Compute the derivatives related to the secondary state parameters.</div> |
| </td> |
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| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/ode/SecondaryEquations.html#getDimension()">getDimension</a></strong>()</code> |
| <div class="block">Get the dimension of the secondary state parameters.</div> |
| </td> |
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| <h4>getDimension</h4> |
| <pre>int getDimension()</pre> |
| <div class="block">Get the dimension of the secondary state parameters.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>dimension of the secondary state parameters</dd></dl> |
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| <h4>computeDerivatives</h4> |
| <pre>void computeDerivatives(double t, |
| double[] primary, |
| double[] primaryDot, |
| double[] secondary, |
| double[] secondaryDot) |
| throws <a href="../../../../../org/apache/commons/math3/exception/MaxCountExceededException.html" title="class in org.apache.commons.math3.exception">MaxCountExceededException</a>, |
| <a href="../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">DimensionMismatchException</a></pre> |
| <div class="block">Compute the derivatives related to the secondary state parameters.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>t</code> - current value of the independent <I>time</I> variable</dd><dd><code>primary</code> - array containing the current value of the primary state vector</dd><dd><code>primaryDot</code> - array containing the derivative of the primary state vector</dd><dd><code>secondary</code> - array containing the current value of the secondary state vector</dd><dd><code>secondaryDot</code> - placeholder array where to put the derivative of the secondary state vector</dd> |
| <dt><span class="strong">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/exception/MaxCountExceededException.html" title="class in org.apache.commons.math3.exception">MaxCountExceededException</a></code> - if the number of functions evaluations is exceeded</dd> |
| <dd><code><a href="../../../../../org/apache/commons/math3/exception/DimensionMismatchException.html" title="class in org.apache.commons.math3.exception">DimensionMismatchException</a></code> - if arrays dimensions do not match equations settings</dd></dl> |
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