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Remove dependency "ComplexUtils" class. 

Class will not be released as of "Commons Numbers" v1.0 (cf. NUMBERS-25).
This commit is contained in:
Gilles Sadowski 2021-06-10 18:24:53 +02:00
parent 151b015ea7
commit ca830af170
1 changed files with 19 additions and 4 deletions
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23
commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/analysis/solvers/LaguerreSolver.java
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@ -17,7 +17,6 @@
package org.apache.commons.math4.legacy.analysis.solvers; package org.apache.commons.math4.legacy.analysis.solvers;
import org.apache.commons.numbers.complex.Complex; import org.apache.commons.numbers.complex.Complex;
import org.apache.commons.numbers.complex.streams.ComplexUtils;
import org.apache.commons.math4.legacy.analysis.polynomials.PolynomialFunction; import org.apache.commons.math4.legacy.analysis.polynomials.PolynomialFunction;
import org.apache.commons.math4.legacy.exception.NoBracketingException; import org.apache.commons.math4.legacy.exception.NoBracketingException;
import org.apache.commons.math4.legacy.exception.NoDataException; import org.apache.commons.math4.legacy.exception.NoDataException;
@ -147,7 +146,7 @@ public class LaguerreSolver extends AbstractPolynomialSolver {
* @return the point at which the function value is zero. * @return the point at which the function value is zero.
*/ */
private double laguerre(double lo, double hi) { private double laguerre(double lo, double hi) {
final Complex c[] = ComplexUtils.real2Complex(getCoefficients()); final Complex c[] = real2Complex(getCoefficients());
final Complex initial = Complex.ofCartesian(0.5 * (lo + hi), 0); final Complex initial = Complex.ofCartesian(0.5 * (lo + hi), 0);
final Complex z = complexSolver.solve(c, initial); final Complex z = complexSolver.solve(c, initial);
@ -193,7 +192,7 @@ public class LaguerreSolver extends AbstractPolynomialSolver {
Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY,
Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
initial); initial);
return complexSolver.solveAll(ComplexUtils.real2Complex(coefficients), return complexSolver.solveAll(real2Complex(coefficients),
Complex.ofCartesian(initial, 0d)); Complex.ofCartesian(initial, 0d));
} }
@ -223,7 +222,7 @@ public class LaguerreSolver extends AbstractPolynomialSolver {
Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY,
Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY,
initial); initial);
return complexSolver.solve(ComplexUtils.real2Complex(coefficients), return complexSolver.solve(real2Complex(coefficients),
Complex.ofCartesian(initial, 0d)); Complex.ofCartesian(initial, 0d));
} }
@ -381,4 +380,20 @@ public class LaguerreSolver extends AbstractPolynomialSolver {
} }
} }
} }
/**
* Converts a {@code double[]} array to a {@code Complex[]} array.
*
* @param real array of numbers to be converted to their {@code Complex} equivalent
* @return {@code Complex} array
*/
private static Complex[] real2Complex(double[] real) {
int index = 0;
final Complex[] c = new Complex[real.length];
for (final double d : real) {
c[index] = Complex.ofCartesian(d, 0);
index++;
}
return c;
}
} }