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Commit 3c252474 authored by Koen Wermer's avatar Koen Wermer
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parent d308c33a
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......@@ -22,6 +22,13 @@ import org.apache.commons.math3.analysis.UnivariateFunction;
import org.apache.commons.math3.exception.ConvergenceException;
import org.apache.commons.math3.exception.MathInternalError;
import org.apache.commons.math3.exception.NoBracketingException;
import org.apache.commons.math3.exception.NotStrictlyPositiveException;
import org.apache.commons.math3.exception.NullArgumentException;
import org.apache.commons.math3.exception.NumberIsTooLargeException;
import org.apache.commons.math3.exception.util.LocalizedFormats;
import org.apache.commons.math3.util.FastMath;
/**
* Base class for all bracketing <em>Secant</em>-based methods for root-finding
* (approximating a zero of a univariate real function).
......@@ -256,13 +263,13 @@ public abstract class BaseSecantSolver
return (fLo >= 0 && fHi <= 0) || (fLo <= 0 && fHi >= 0);
}
public static boolean isSequence(final double start,
public static boolean isSequence1(final double start,
final double mid,
final double end) {
return (start < mid) && (mid < end);
}
public static void verifyInterval(final double lower2,
public static void verifyInterval1(final double lower2,
final double upper2)
throws NumberIsTooLargeException {
if (lower2 >= upper2) {
......@@ -271,12 +278,12 @@ public abstract class BaseSecantSolver
}
}
public static void verifySequence(final double lower3,
public static void verifySequence1(final double lower3,
final double initial,
final double upper3)
throws NumberIsTooLargeException {
verifyInterval(lower3, initial);
verifyInterval(initial, upper3);
verifyInterval1(lower3, initial);
verifyInterval1(initial, upper3);
}
public static void verifyBracketing(UnivariateFunction function2,
......@@ -287,7 +294,7 @@ public abstract class BaseSecantSolver
if (function2 == null) {
throw new NullArgumentException(LocalizedFormats.FUNCTION);
}
verifyInterval(lower4, upper4);
verifyInterval1(lower4, upper4);
if (!isBracketing(function2, lower4, upper4)) {
throw new NoBracketingException(lower4, upper4,
function2.value(lower4),
......
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