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/external/apache-commons-math/src/main/java/org/apache/commons/math/linear/
DQRDecompositionImpl.java60 private RealMatrix cachedQT; field in QRDecompositionImpl
79 cachedQT = null; in QRDecompositionImpl()
184 if (cachedQT == null) { in getQT()
189 cachedQT = MatrixUtils.createRealMatrix(m, m); in getQT()
197 cachedQT.setEntry(minor, minor, 1.0); in getQT()
202 cachedQT.setEntry(minor, minor, 1.0); in getQT()
207 alpha -= cachedQT.getEntry(col, row) * qrtMinor[row]; in getQT()
212 cachedQT.addToEntry(col, row, -alpha * qrtMinor[row]); in getQT()
221 return cachedQT; in getQT()