commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/ode/nonstiff/DormandPrince853FieldStepInterpolator.java [238:259]:
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            final T f2 = f1.multiply(theta);
            final T f3 = f2.multiply(eta);
            final T f4 = f3.multiply(theta);
            final T f5 = f4.multiply(eta);
            final T f6 = f5.multiply(theta);
            final T[] p = MathArrays.buildArray(time.getField(), 16);
            final T[] q = MathArrays.buildArray(time.getField(), 16);
            for (int i = 0; i < p.length; ++i) {
                p[i] =     f0.multiply(d[0][i]).
                       add(f1.multiply(d[1][i])).
                       add(f2.multiply(d[2][i])).
                       add(f3.multiply(d[3][i])).
                       add(f4.multiply(d[4][i])).
                       add(f5.multiply(d[5][i])).
                       add(f6.multiply(d[6][i]));
                q[i] =                    d[0][i].
                        add(dot1.multiply(d[1][i])).
                        add(dot2.multiply(d[2][i])).
                        add(dot3.multiply(d[3][i])).
                        add(dot4.multiply(d[4][i])).
                        add(dot5.multiply(d[5][i])).
                        add(dot6.multiply(d[6][i]));
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commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/ode/nonstiff/DormandPrince853FieldStepInterpolator.java [268:289]:
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            final T f2 = f1.multiply(theta);
            final T f3 = f2.multiply(eta);
            final T f4 = f3.multiply(theta);
            final T f5 = f4.multiply(eta);
            final T f6 = f5.multiply(theta);
            final T[] p = MathArrays.buildArray(time.getField(), 16);
            final T[] q = MathArrays.buildArray(time.getField(), 16);
            for (int i = 0; i < p.length; ++i) {
                p[i] =     f0.multiply(d[0][i]).
                       add(f1.multiply(d[1][i])).
                       add(f2.multiply(d[2][i])).
                       add(f3.multiply(d[3][i])).
                       add(f4.multiply(d[4][i])).
                       add(f5.multiply(d[5][i])).
                       add(f6.multiply(d[6][i]));
                q[i] =                    d[0][i].
                        add(dot1.multiply(d[1][i])).
                        add(dot2.multiply(d[2][i])).
                        add(dot3.multiply(d[3][i])).
                        add(dot4.multiply(d[4][i])).
                        add(dot5.multiply(d[5][i])).
                        add(dot6.multiply(d[6][i]));
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