/* 24: */
/* 25: */ private AdamsNordsieckTransformer(int nSteps) /* 26: */ {
/* 27:154 */ FieldMatrix<BigFraction> bigP = buildP(nSteps);
/* 28:155 */ FieldDecompositionSolver<BigFraction> pSolver =
new FieldLUDecomposition(bigP).getSolver();
/* 29: */
/* 30: */
/* 31:158 */ BigFraction[] u = new BigFraction[nSteps];
/* 32:159 */ Arrays.fill(u, BigFraction.ONE);
/* 33:160 */ BigFraction[] bigC1 =
(BigFraction[]) pSolver.solve(new ArrayFieldVector(u, false)).toArray();
/* 34: */
/* 35: */
/* 36: */
/* 37: */
/* 38: */
/* 39:166 */ BigFraction[][] shiftedP = (BigFraction[][]) bigP.getData();
/* 40:167 */ for (int i = shiftedP.length - 1; i > 0; i--) {
/* 41:169 */ shiftedP[i] = shiftedP[(i - 1)];
/* 42: */ }
/* 43:171 */ shiftedP[0] = new BigFraction[nSteps];
/* 44:172 */ Arrays.fill(shiftedP[0], BigFraction.ZERO);
/* 45:173 */ FieldMatrix<BigFraction> bigMSupdate =
pSolver.solve(new Array2DRowFieldMatrix(shiftedP, false));
/* 46: */
/* 47: */
/* 48: */
/* 49:177 */ this.update = MatrixUtils.bigFractionMatrixToRealMatrix(bigMSupdate);
/* 50:178 */ this.c1 = new double[nSteps];
/* 51:179 */ for (int i = 0; i < nSteps; i++) {
/* 52:180 */ this.c1[i] = bigC1[i].doubleValue();
/* 53: */ }
/* 54: */ }
