Apache
/
commons-math
mirror of https://github.com/apache/commons-math.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Removed call to double[][] solve(double[][]) from initializeHighOrderDerivatives. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1166533 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastien Brisard 2011-09-08 05:59:22 +00:00
parent 5ec76b26fa
commit c004c9daea
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/main/java/org/apache/commons/math/ode/nonstiff/AdamsNordsieckTransformer.java
View File

@ -30,6 +30,7 @@ import org.apache.commons.math.linear.FieldMatrix;
import org.apache.commons.math.linear.MatrixUtils;
import org.apache.commons.math.linear.QRDecomposition;
import org.apache.commons.math.linear.QRDecompositionImpl;
import org.apache.commons.math.linear.RealMatrix;
/** Transformer to Nordsieck vectors for Adams integrators.
* <p>This class is used by {@link AdamsBashforthIntegrator Adams-Bashforth} and
@ -289,8 +290,8 @@ public class AdamsNordsieckTransformer {
// solve the rectangular system in the least square sense
// to get the best estimate of the Nordsieck vector [s2 ... sk]
QRDecomposition decomposition = new QRDecompositionImpl(new Array2DRowRealMatrix(a, false));
return new Array2DRowRealMatrix(decomposition.getSolver().solve(b), false);
RealMatrix x = decomposition.getSolver().solve(new Array2DRowRealMatrix(b, false));
return new Array2DRowRealMatrix(x.getData(), false);
}
/** Update the high order scaled derivatives for Adams integrators (phase 1).