Uses of Class
org.hipparchus.exception.MathRuntimeException

Packages that use MathRuntimeException

Package	Description
org.hipparchus	Common classes used throughout the Hipparchus library.
org.hipparchus.analysis.differentiation	This package holds the main interfaces and basic building block classes dealing with differentiation.
org.hipparchus.analysis.interpolation	Univariate real functions interpolation algorithms.
org.hipparchus.exception	Specialized exceptions for algorithms errors.
org.hipparchus.filtering.kalman	Kalman filter.
org.hipparchus.filtering.kalman.extended	Kalman filter implementation for non-linear processes.
org.hipparchus.filtering.kalman.linear	Kalman filter implementation for linear processes.
org.hipparchus.geometry	This package is the top level package for geometry.
org.hipparchus.geometry.euclidean.oned	This package provides basic 1D geometry components.
org.hipparchus.geometry.euclidean.threed	This package provides basic 3D geometry components.
org.hipparchus.geometry.euclidean.twod	This package provides basic 2D geometry components.
org.hipparchus.geometry.spherical.oned	This package provides basic geometry components on the 1-sphere.
org.hipparchus.geometry.spherical.twod	This package provides basic geometry components on the 2-sphere.
org.hipparchus.linear	Linear algebra support.
org.hipparchus.migration.exception	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.genetics	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.geometry.euclidean	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.geometry.euclidean.threed	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.linear	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.ode	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.optim.linear	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.migration.stat.regression	This package provides migration classes from Apache Commons Math to Hipparchus.
org.hipparchus.ode	This package provides classes to solve Ordinary Differential Equations problems.
org.hipparchus.stat.correlation	Correlations/Covariance computations.
org.hipparchus.stat.inference	Classes providing hypothesis testing.
org.hipparchus.util	Convenience routines and common data structures used throughout the Hipparchus library.

Uses of MathRuntimeException in org.hipparchus

Methods in org.hipparchus that throw MathRuntimeException

Modifier and Type	Method and Description
T	FieldElement.divide(T a) Compute this ÷ a.
T	FieldElement.reciprocal() Returns the multiplicative inverse of this element.

Uses of MathRuntimeException in org.hipparchus.analysis.differentiation

Methods in org.hipparchus.analysis.differentiation that throw MathRuntimeException

Modifier and Type	Method and Description
double	DerivativeStructure.taylor(double... delta) Evaluate Taylor expansion a derivative structure.
T	FieldDerivativeStructure.taylor(double... delta) Evaluate Taylor expansion of a derivative structure.
double	DSCompiler.taylor(double[] ds, int dsOffset, double... delta) Evaluate Taylor expansion of a derivative structure.
T	FieldDerivativeStructure.taylor(T... delta) Evaluate Taylor expansion of a derivative structure.
<T extends RealFieldElement<T>> T	DSCompiler.taylor(T[] ds, int dsOffset, double... delta) Evaluate Taylor expansion of a derivative structure.
<T extends RealFieldElement<T>> T	DSCompiler.taylor(T[] ds, int dsOffset, T... delta) Evaluate Taylor expansion of a derivative structure.

Uses of MathRuntimeException in org.hipparchus.analysis.interpolation

Methods in org.hipparchus.analysis.interpolation that throw MathRuntimeException

Modifier and Type	Method and Description
void	HermiteInterpolator.addSamplePoint(double x, double[]... value) Add a sample point.
void	FieldHermiteInterpolator.addSamplePoint(T x, T[]... value) Add a sample point.

Uses of MathRuntimeException in org.hipparchus.exception

Subclasses of MathRuntimeException in org.hipparchus.exception

Modifier and Type	Class and Description
class	MathIllegalArgumentException Base class for all preconditions violation exceptions.
class	MathIllegalStateException Base class for all exceptions that signal that the process throwing the exception is in a state that does not comply with the set of states that it is designed to be in.

Methods in org.hipparchus.exception that return MathRuntimeException

Modifier and Type	Method and Description
static MathRuntimeException	MathRuntimeException.createInternalError() Create an exception for an internal error.
static MathRuntimeException	MathRuntimeException.createInternalError(Throwable cause) Create an exception for an internal error.

Uses of MathRuntimeException in org.hipparchus.filtering.kalman

Methods in org.hipparchus.filtering.kalman that throw MathRuntimeException

Modifier and Type	Method and Description
ProcessEstimate	KalmanFilter.estimationStep(T measurement) Perform one estimation step.

Uses of MathRuntimeException in org.hipparchus.filtering.kalman.extended

Methods in org.hipparchus.filtering.kalman.extended that throw MathRuntimeException

Modifier and Type	Method and Description
ProcessEstimate	ExtendedKalmanFilter.estimationStep(T measurement) Perform one estimation step.

Uses of MathRuntimeException in org.hipparchus.filtering.kalman.linear

Methods in org.hipparchus.filtering.kalman.linear that throw MathRuntimeException

Modifier and Type	Method and Description
ProcessEstimate	LinearKalmanFilter.estimationStep(T measurement) Perform one estimation step.

Uses of MathRuntimeException in org.hipparchus.geometry

Methods in org.hipparchus.geometry that throw MathRuntimeException

Modifier and Type	Method and Description
Space	Space.getSubSpace() Get the n-1 dimension subspace of this space.
Vector<S>	Vector.normalize() Get a normalized vector aligned with the instance.

Uses of MathRuntimeException in org.hipparchus.geometry.euclidean.oned

Subclasses of MathRuntimeException in org.hipparchus.geometry.euclidean.oned

Modifier and Type	Class and Description
static class	Euclidean1D.NoSubSpaceException Specialized exception for inexistent sub-space.

Methods in org.hipparchus.geometry.euclidean.oned that throw MathRuntimeException

Modifier and Type	Method and Description
Vector1D	Vector1D.normalize() Get a normalized vector aligned with the instance.

Uses of MathRuntimeException in org.hipparchus.geometry.euclidean.threed

Methods in org.hipparchus.geometry.euclidean.threed that throw MathRuntimeException

Modifier and Type	Method and Description
static <T extends RealFieldElement<T>> T	FieldVector3D.angle(FieldVector3D<T> v1, FieldVector3D<T> v2) Compute the angular separation between two vectors.
static <T extends RealFieldElement<T>> T	FieldVector3D.angle(FieldVector3D<T> v1, Vector3D v2) Compute the angular separation between two vectors.
static <T extends RealFieldElement<T>> T	FieldVector3D.angle(Vector3D v1, FieldVector3D<T> v2) Compute the angular separation between two vectors.
static double	Vector3D.angle(Vector3D v1, Vector3D v2) Compute the angular separation between two vectors.
PolyhedronsSet.BRep	PolyhedronsSet.getBRep() Get the boundary representation of the instance.
Vector3D	Vector3D.normalize() Get a normalized vector aligned with the instance.
FieldVector3D<T>	FieldVector3D.normalize() Get a normalized vector aligned with the instance.
Vector3D	Vector3D.orthogonal() Get a vector orthogonal to the instance.
FieldVector3D<T>	FieldVector3D.orthogonal() Get a vector orthogonal to the instance.
void	Plane.reset(Vector3D p, Vector3D normal) Reset the instance as if built from a point and a normal.

Constructors in org.hipparchus.geometry.euclidean.threed that throw MathRuntimeException

Constructor and Description
FieldRotation(FieldVector3D<T> u, FieldVector3D<T> v) Build one of the rotations that transform one vector into another one.
FieldRotation(FieldVector3D<T> u1, FieldVector3D<T> u2, FieldVector3D<T> v1, FieldVector3D<T> v2) Build the rotation that transforms a pair of vectors into another pair.
Plane(Vector3D normal, double tolerance) Build a plane normal to a given direction and containing the origin.
Plane(Vector3D p, Vector3D normal, double tolerance) Build a plane from a point and a normal.
Plane(Vector3D p1, Vector3D p2, Vector3D p3, double tolerance) Build a plane from three points.
Rotation(Vector3D u, Vector3D v) Build one of the rotations that transform one vector into another one.
Rotation(Vector3D u1, Vector3D u2, Vector3D v1, Vector3D v2) Build the rotation that transforms a pair of vectors into another pair.

Uses of MathRuntimeException in org.hipparchus.geometry.euclidean.twod

Methods in org.hipparchus.geometry.euclidean.twod that throw MathRuntimeException

Modifier and Type	Method and Description
static <T extends RealFieldElement<T>> T	FieldVector2D.angle(FieldVector2D<T> v1, FieldVector2D<T> v2) Compute the angular separation between two vectors.
static <T extends RealFieldElement<T>> T	FieldVector2D.angle(FieldVector2D<T> v1, Vector2D v2) Compute the angular separation between two vectors.
static <T extends RealFieldElement<T>> T	FieldVector2D.angle(Vector2D v1, FieldVector2D<T> v2) Compute the angular separation between two vectors.
static double	Vector2D.angle(Vector2D v1, Vector2D v2) Compute the angular separation between two vectors.
FieldVector2D<T>	FieldVector2D.normalize() Get a normalized vector aligned with the instance.
Vector2D	Vector2D.normalize() Get a normalized vector aligned with the instance.

Uses of MathRuntimeException in org.hipparchus.geometry.spherical.oned

Subclasses of MathRuntimeException in org.hipparchus.geometry.spherical.oned

Modifier and Type	Class and Description
static class	ArcsSet.InconsistentStateAt2PiWrapping Specialized exception for inconsistent BSP tree state inconsistency.
static class	Sphere1D.NoSubSpaceException Specialized exception for inexistent sub-space.

Uses of MathRuntimeException in org.hipparchus.geometry.spherical.twod

Constructors in org.hipparchus.geometry.spherical.twod that throw MathRuntimeException

Constructor and Description
S2Point(Vector3D vector) Simple constructor.

Uses of MathRuntimeException in org.hipparchus.linear

Methods in org.hipparchus.linear that throw MathRuntimeException

Modifier and Type	Method and Description
double	RealVector.cosine(RealVector v) Computes the cosine of the angle between this vector and the argument.
ArrayFieldVector<T>	ArrayFieldVector.ebeDivide(ArrayFieldVector<T> v) Element-by-element division.
FieldVector<T>	ArrayFieldVector.ebeDivide(FieldVector<T> v) Element-by-element division.
FieldVector<T>	SparseFieldVector.ebeDivide(FieldVector<T> v) Element-by-element division.
FieldVector<T>	FieldVector.ebeDivide(FieldVector<T> v) Element-by-element division.
boolean	RealVector.equals(Object other) Test for the equality of two real vectors.
int	RealVector.hashCode() .
FieldVector<T>	ArrayFieldVector.mapDivide(T d) Map a division operation to each entry.
FieldVector<T>	SparseFieldVector.mapDivide(T d) Map a division operation to each entry.
FieldVector<T>	FieldVector.mapDivide(T d) Map a division operation to each entry.
FieldVector<T>	ArrayFieldVector.mapDivideToSelf(T d) Map a division operation to each entry.
FieldVector<T>	SparseFieldVector.mapDivideToSelf(T d) Map a division operation to each entry.
FieldVector<T>	FieldVector.mapDivideToSelf(T d) Map a division operation to each entry.
FieldVector<T>	ArrayFieldVector.mapInv() Map the 1/x function to each entry.
FieldVector<T>	SparseFieldVector.mapInv() Map the 1/x function to each entry.
FieldVector<T>	FieldVector.mapInv() Map the 1/x function to each entry.
FieldVector<T>	ArrayFieldVector.mapInvToSelf() Map the 1/x function to each entry.
FieldVector<T>	SparseFieldVector.mapInvToSelf() Map the 1/x function to each entry.
FieldVector<T>	FieldVector.mapInvToSelf() Map the 1/x function to each entry.
ArrayFieldVector<T>	ArrayFieldVector.projection(ArrayFieldVector<T> v) Find the orthogonal projection of this vector onto another vector.
FieldVector<T>	ArrayFieldVector.projection(FieldVector<T> v) Find the orthogonal projection of this vector onto another vector.
FieldVector<T>	SparseFieldVector.projection(FieldVector<T> v) Find the orthogonal projection of this vector onto another vector.
FieldVector<T>	FieldVector.projection(FieldVector<T> v) Find the orthogonal projection of this vector onto another vector.
RealVector	RealVector.projection(RealVector v) Find the orthogonal projection of this vector onto another vector.
void	RealVector.SparseEntryIterator.remove()
static void	MatrixUtils.solveLowerTriangularSystem(RealMatrix rm, RealVector b) Solve a system of composed of a Lower Triangular Matrix RealMatrix.
static void	MatrixUtils.solveUpperTriangularSystem(RealMatrix rm, RealVector b) Solver a system composed of an Upper Triangular Matrix RealMatrix.
void	RealVector.unitize() Converts this vector into a unit vector.
void	OpenMapRealVector.unitize() Converts this vector into a unit vector.
RealVector	RealVector.unitVector() Creates a unit vector pointing in the direction of this vector.
OpenMapRealVector	OpenMapRealVector.unitVector() Creates a unit vector pointing in the direction of this vector.

Constructors in org.hipparchus.linear that throw MathRuntimeException

Constructor and Description
EigenDecomposition(RealMatrix matrix, double epsilon) Calculates the eigen decomposition of the given real matrix.

Uses of MathRuntimeException in org.hipparchus.migration.exception

Subclasses of MathRuntimeException in org.hipparchus.migration.exception

Modifier and Type	Class and Description
class	ConvergenceException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	DimensionMismatchException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	InsufficientDataException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	MathArithmeticException Deprecated. as of 1.0, replaced with MathRuntimeException
class	MathIllegalNumberException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	MathInternalError Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	MathParseException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	MathUnsupportedOperationException Deprecated. as of 1.0, replaced with MathRuntimeException
class	MaxCountExceededException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	MultiDimensionMismatchException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NoBracketingException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NoDataException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonMonotonicSequenceException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NotANumberException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NotFiniteNumberException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NotPositiveException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NotStrictlyPositiveException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NumberIsTooLargeException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NumberIsTooSmallException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	OutOfRangeException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	TooManyEvaluationsException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	TooManyIterationsException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	ZeroException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException

Uses of MathRuntimeException in org.hipparchus.migration.genetics

Subclasses of MathRuntimeException in org.hipparchus.migration.genetics

Modifier and Type	Class and Description
class	InvalidRepresentationException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException

Uses of MathRuntimeException in org.hipparchus.migration.geometry.euclidean

Subclasses of MathRuntimeException in org.hipparchus.migration.geometry.euclidean

Modifier and Type	Class and Description
class	CardanEulerSingularityException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException

Uses of MathRuntimeException in org.hipparchus.migration.geometry.euclidean.threed

Subclasses of MathRuntimeException in org.hipparchus.migration.geometry.euclidean.threed

Modifier and Type	Class and Description
class	NotARotationMatrixException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException

Uses of MathRuntimeException in org.hipparchus.migration.linear

Subclasses of MathRuntimeException in org.hipparchus.migration.linear

Modifier and Type	Class and Description
class	IllConditionedOperatorException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	MatrixDimensionMismatchException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonPositiveDefiniteMatrixException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonPositiveDefiniteOperatorException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonSelfAdjointOperatorException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonSquareMatrixException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonSquareOperatorException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	NonSymmetricMatrixException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException
class	SingularMatrixException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	SingularOperatorException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException

Uses of MathRuntimeException in org.hipparchus.migration.ode

Subclasses of MathRuntimeException in org.hipparchus.migration.ode

Modifier and Type	Class and Description
static class	JacobianMatrices.MismatchedEquations Deprecated. Special exception for equations mismatch.
class	UnknownParameterException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException

Uses of MathRuntimeException in org.hipparchus.migration.optim.linear

Subclasses of MathRuntimeException in org.hipparchus.migration.optim.linear

Modifier and Type	Class and Description
class	NoFeasibleSolutionException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException
class	UnboundedSolutionException Deprecated. as of 1.0, this exception is replaced by MathIllegalStateException

Uses of MathRuntimeException in org.hipparchus.migration.stat.regression

Subclasses of MathRuntimeException in org.hipparchus.migration.stat.regression

Modifier and Type	Class and Description
class	ModelSpecificationException Deprecated. as of 1.0, this exception is replaced by MathIllegalArgumentException

Uses of MathRuntimeException in org.hipparchus.ode

Subclasses of MathRuntimeException in org.hipparchus.ode

Modifier and Type	Class and Description
static class	VariationalEquation.MismatchedEquations Special exception for equations mismatch.

Uses of MathRuntimeException in org.hipparchus.stat.correlation

Methods in org.hipparchus.stat.correlation that throw MathRuntimeException

Modifier and Type	Method and Description
int	StorelessCovariance.getN() This Covariance method is not supported by a StorelessCovariance, since the number of bivariate observations does not have to be the same for different pairs of covariates - i.e., N as defined in Covariance.getN() is undefined.

Uses of MathRuntimeException in org.hipparchus.stat.inference

Methods in org.hipparchus.stat.inference that throw MathRuntimeException

Modifier and Type	Method and Description
double	KolmogorovSmirnovTest.cdf(double d, int n) Calculates P(D_n < d) using the method described in [1] with quick decisions for extreme values given in [2] (see above).
double	KolmogorovSmirnovTest.cdf(double d, int n, boolean exact) Calculates P(D_n < d) using method described in [1] with quick decisions for extreme values given in [2] (see above).
double	KolmogorovSmirnovTest.cdfExact(double d, int n) Calculates P(D_n < d).

Uses of MathRuntimeException in org.hipparchus.util

Methods in org.hipparchus.util that throw MathRuntimeException

Modifier and Type	Method and Description
static int	ArithmeticUtils.addAndCheck(int x, int y) Add two integers, checking for overflow.
static long	ArithmeticUtils.addAndCheck(long a, long b) Add two long integers, checking for overflow.
static int	FastMath.addExact(int a, int b) Add two numbers, detecting overflows.
static long	FastMath.addExact(long a, long b) Add two numbers, detecting overflows.
static long	CombinatoricsUtils.binomialCoefficient(int n, int k) Returns an exact representation of the Binomial Coefficient, "n choose k", the number of k-element subsets that can be selected from an n-element set.
static double	CombinatoricsUtils.binomialCoefficientDouble(int n, int k) Returns a double representation of the Binomial Coefficient, "n choose k", the number of k-element subsets that can be selected from an n-element set.
static double	CombinatoricsUtils.binomialCoefficientLog(int n, int k) Returns the natural log of the Binomial Coefficient, "n choose k", the number of k-element subsets that can be selected from an n-element set.
static byte	MathUtils.copySign(byte magnitude, byte sign) Returns the first argument with the sign of the second argument.
static int	MathUtils.copySign(int magnitude, int sign) Returns the first argument with the sign of the second argument.
static long	MathUtils.copySign(long magnitude, long sign) Returns the first argument with the sign of the second argument.
static short	MathUtils.copySign(short magnitude, short sign) Returns the first argument with the sign of the second argument.
static int	FastMath.decrementExact(int n) Decrement a number, detecting overflows.
static long	FastMath.decrementExact(long n) Decrement a number, detecting overflows.
BigReal	BigReal.divide(BigReal a) Compute this ÷ a.
static int	FastMath.floorDiv(int a, int b) Finds q such that a = q b + r with 0 <= r < b if b > 0 and b < r <= 0 if b < 0.
static long	FastMath.floorDiv(long a, int b) Finds q such that a = q b + r with 0 <= r < b if b > 0 and b < r <= 0 if b < 0.
static long	FastMath.floorDiv(long a, long b) Finds q such that a = q b + r with 0 <= r < b if b > 0 and b < r <= 0 if b < 0.
static int	FastMath.floorMod(int a, int b) Finds r such that a = q b + r with 0 <= r < b if b > 0 and b < r <= 0 if b < 0.
static int	ArithmeticUtils.gcd(int p, int q) Computes the greatest common divisor of the absolute value of two numbers, using a modified version of the "binary gcd" method.
static long	ArithmeticUtils.gcd(long p, long q) Gets the greatest common divisor of the absolute value of two numbers, using the "binary gcd" method which avoids division and modulo operations.
static int	FastMath.incrementExact(int n) Increment a number, detecting overflows.
static long	FastMath.incrementExact(long n) Increment a number, detecting overflows.
static int	ArithmeticUtils.lcm(int a, int b) Returns the least common multiple of the absolute value of two numbers, using the formula lcm(a,b) = (a / gcd(a,b)) * b.
static long	ArithmeticUtils.lcm(long a, long b) Returns the least common multiple of the absolute value of two numbers, using the formula lcm(a,b) = (a / gcd(a,b)) * b.
static int	ArithmeticUtils.mulAndCheck(int x, int y) Multiply two integers, checking for overflow.
static long	ArithmeticUtils.mulAndCheck(long a, long b) Multiply two long integers, checking for overflow.
static double[]	MathArrays.normalizeArray(double[] values, double normalizedSum) Normalizes an array to make it sum to a specified value.
static int	ArithmeticUtils.pow(int k, int e) Raise an int to an int power.
static long	ArithmeticUtils.pow(long k, int e) Raise a long to an int power.
BigReal	BigReal.reciprocal() Returns the multiplicative inverse of this element.
static float	Precision.round(float x, int scale, int roundingMethod) Rounds the given value to the specified number of decimal places.
static long	CombinatoricsUtils.stirlingS2(int n, int k) Returns the Stirling number of the second kind, "S(n,k)", the number of ways of partitioning an n-element set into k non-empty subsets.
static int	ArithmeticUtils.subAndCheck(int x, int y) Subtract two integers, checking for overflow.
static long	ArithmeticUtils.subAndCheck(long a, long b) Subtract two long integers, checking for overflow.
static int	FastMath.toIntExact(long n) Convert a long to interger, detecting overflows