Issues

• Add Lebedev Spherical Integrator

  Hipparchus-Math/hipparchus#472 · Filter by author nkaikati opened on Sep 4, 2026
  

• MathArrays.distance1(int[], int[]) returns negative distances for in-contract input

  Hipparchus-Math/hipparchus#471 · Filter by author ser10us opened on Aug 29, 2026

• MultidimensionalCounter: unchecked int overflow makes getSize(), getCount() and the iterator silently wrong for in-contract input

  Hipparchus-Math/hipparchus#470 · Filter by author ser10us opened on Aug 29, 2026

• DfpMath.splitPow / pow(Dfp,int): int overflow makes exponents ≥ 2^30 loop forever (exp/sinh/cosh/tanh of a large argument hangs)

  Hipparchus-Math/hipparchus#465 · Filter by author AviranAbady opened on May 20, 2026

• Implement Information filter

  featurefiltering
  Hipparchus-Math/hipparchus#463 · Filter by author BryanCazabonne opened on May 17, 2026

• ComplexFormat.parse exhibits inconsistent behavior due to implicit comma skipping by NumberFormat

  Hipparchus-Math/hipparchus#459 · Filter by author yin-mao opened on Apr 24, 2026

• FDistribution.inverseCumulativeProbability returns incorrect quantile (orders of magnitude error) for small degrees of freedom

  Hipparchus-Math/hipparchus#458 · Filter by author yin-mao opened on Apr 24, 2026

• Test failures during building with Java 25: FastMathTest.checkMissingFastMathClasses:1542 FastMath should implement all StrictMath methods ==> expected: <true> but was: <false>

  Hipparchus-Math/hipparchus#457 · Filter by author Hanbing59 opened on Apr 8, 2026

• Fixed wrong class naming of IndexedEigenValue

  Hipparchus-Math/hipparchus#452 · Filter by author Serrof opened on Feb 12, 2026 · 5.0
  

• Missing update of changes.xml for hipparchus-aggregator

  Hipparchus-Math/hipparchus#451 · Filter by author BryanCazabonne opened on Feb 8, 2026

• Define constructor ComplexEigenDecomposition(FieldMatrix<Complex> matrix)

  Hipparchus-Math/hipparchus#442 · Filter by author axkr opened on Dec 31, 2025
  2

• Poor performance of DSCompiler and rebaser initialization

  fieldperformance
  Hipparchus-Math/hipparchus#423 · Filter by author afvym opened on Oct 8, 2025
  9

• Strategies for a matrix containing values very close to zero, when passing it to EigenDecompositionSymmetric()?

  Hipparchus-Math/hipparchus#365 · Filter by author mjw99 opened on Dec 27, 2024
  2

• Hermite interpolation at sample point gives slightly different results

  Hipparchus-Math/hipparchus#358 · Filter by author VincentCucchietti opened on Nov 29, 2024

• hipparchus.org website: issue with lists on documentation pages

  Hipparchus-Math/hipparchus#341 · Filter by author mmatsn opened on Jun 6, 2024

• Avoid exception "org.hipparchus.exception.MathIllegalArgumentException: matrix is singular" for complex implementations

  Hipparchus-Math/hipparchus#337 · Filter by author axkr opened on May 2, 2024
  2

• Add Field version of GraggBulrischStoer integrator

  fieldode
  Hipparchus-Math/hipparchus#331 · Filter by author Serrof opened on Mar 24, 2024

• Infinite loop with SQPOptimizerGM

  optim
  Hipparchus-Math/hipparchus#313 · Filter by author Serrof opened on Feb 27, 2024
  1

• Should PearsonsCorrelation#computeCorrelationMatrix() check NaN results?

  Hipparchus-Math/hipparchus#283 · Filter by author axkr opened on Nov 12, 2023
  1

• Add adaptive Gauss–Kronrod quadrature

  Hipparchus-Math/hipparchus#279 · Filter by author axkr opened on Oct 15, 2023

• Improve erf function for complex values

  bug
  Hipparchus-Math/hipparchus#278 · Filter by author axkr opened on Oct 9, 2023

• Add Field equivalent of LaguerreSolver

  field
  Hipparchus-Math/hipparchus#265 · Filter by author Serrof opened on Aug 5, 2023

• SemiDefinitePositiveCholeskyDecomposition wrong output?

  Hipparchus-Math/hipparchus#255 · Filter by author JMmontilla opened on May 9, 2023
  2

• Add p-norm for vectors

  enhancement
  Hipparchus-Math/hipparchus#254 · Filter by author Serrof opened on May 5, 2023

• EigenDecomposition with small matrix entries giving unexpected zeroes

  Hipparchus-Math/hipparchus#252 · Filter by author afossa opened on May 3, 2023
  1