v0.56.0

New Features

• Number Theory
  • isDeficientNumber
  • isAbundantNumber
  • aliquotSum
  • radical
  • totient
  • cototient
  • reducedTotient
  • mobius
  • isSquarefree
  • isRefactorableNumber
  • isSphenicNumber
  • numberOfDivisors
  • sumOfDivisors

Improvements

• Optimization of prime factorization algorithm

v0.55.0

New Features

• Arbitrary length integers

Improvements

• Factorial optimization

v0.54.0

New Features

• Matrix isNilpotent
• Matrix isRectangularDiagonal
• Matrix mapRows
• MathPHP logo

Improvements

• MatrixFactory random matrix custom lower and upper bounds for random number
• PSR-12 style compliance
• Bugfix: powerIteration random failure - Issue 346

v0.53.0

New Features

• Matrix QR decomposition using Householder reflections
• Matrix Householder transformation
• MatrixFactory random matrix
• MatrixFactory givens rotation matrix
• Matrix isIdempotent
• Matrix Eigenvalue power iteration
• Matrix Eigenvalue jacobi method
• Arithmetic root (nᵗʰ root)
• Vector arithmetic multiply and divide
• Vector Iterator interface

Improvements

• Internal improvements to Matrix
• Matrix decompositions returned as objects
• Matrix Cholesky decomposition provides L transpose

v0.52.0

New Features

• Grubb's test for statistical outliers

v0.51.0

New Features

• Matrix rowSums
• Matrix columnSums
• Matrix rowMeans
• Matrix columnMeans
• Matrix isNormal
• MatrixFactory diagonal matrix creation method
• MatrixFactory vandermonde matrix creation method

Improvements

• Set custom Matrix tolerances
• Various internal improvements

Backwards Incompatible Changes

• Remove Matrix sampleMeans (use rowMeans or columnMeans instead)
• MatrixFactory create method only works with 2d arrays. 1d arrays no longer work. (use diagonal and vandermonde factory methods instead)
• Statistics methods throw exceptions instead of returning null on bad input
• Change return type of LagrangePolynomial to Polynomial

v0.50.0

New Features

• Matrix isOrthogonal
• Matrix isEqual
• Harmonic sequence
• Hyperharmonic sequence
• Map\Single reciprocal

Improvements

• Support methods for almost equal
• Matrix getDiagonalElements works for non-square matrices
• Use more efficient algorithm in Matrix isSymmetric
• Use more efficient algorithm in Matrix isSkewSymmetric

Backwards Incompatible Changes

• Statistics methods throw exceptions instead of returning null on bad input

v0.49.0

New Features

• Matrix augmentAbove
• Matrix augmentLeft

Improvements

• Object matrix multiplication

v0.48.0

New Features

• Matrix submatrix
• Mahalanobis distance
• Bernoulli distribution mean, median, mode and variance
• Binomial distribution mean and variance
• Geometric distribution mean, median, mode and variance
• Hypergeometric distribution mode and variance
• NegativeBinomial (Pascal) distribution CDF, mean, mode and variance
• Poisson distribution mean, median, mode and variance
• Discrete Uniform distribution variance

Improvements

• Binomial distribution PMF uses more numerically stable multiplication method
• Fix potential divide by zero in TheilSen regression

Backwards Incompatible Changes

• Multinomial distribution moved from Discrete to Multivariate namespace

v0.47.0

New Features

• Beta distribution median, mode, variance
• Cauchy distribution variance
• ChiSquared distribution mode, variance
• Exponential distribution median, mode, variance
• F distribution mode, variance
• Gamma distribution median, mode, variance
• Laplace distribution mode, variance
• Logistic distribution mode, vaiance
• LogLogistic distribution median, mode, variance
• LogNormal distribution mode, variance
• Normal distribution mode, variance
• StandardNormal distribution mode, variance
• StudentT distribution mode, variance
• Uniform distribution median, mode, variance
• Weibull distribution median, mode

Improvements

• Normal distribution rand algorithm changed to Box–Muller transform