Release Notes

Version 2.8.0

• fixed error in inv when a zero was on the diagnol for Issue #132
• fixed Issue #140
• added bit_count, Computes the number of 1-bits in the absolute value of the input
• added swapRows and swapCols methods to NdArray, and also free functions
• added pinv, https://numpy.org/doc/stable/reference/generated/numpy.linalg.pinv.html
• added take for Issue #149, https://numpy.org/doc/stable/reference/generated/numpy.take.html
• new non-global random interface
• added ellipse metrics to imageProcessing::Centroids
• documentation updates
• various minor performance improvements and bug fixes

Version 2.7.0

• added bartlett, https://numpy.org/doc/stable/reference/generated/numpy.bartlett.html
• added blackman, https://numpy.org/doc/stable/reference/generated/numpy.blackman.html
• added corrcoef, https://numpy.org/doc/stable/reference/generated/numpy.corrcoef.html
• added cov, https://numpy.org/doc/stable/reference/generated/numpy.cov.html
• added cov_inv, the inverse covariance matrix, aka the concentration matrix
• added extract, https://numpy.org/doc/stable/reference/generated/numpy.extract.html
• added geomspace, https://numpy.org/doc/stable/reference/generated/numpy.geomspace.html
• added hamming, https://numpy.org/doc/stable/reference/generated/numpy.hamming.html
• added hanning, https://numpy.org/doc/stable/reference/generated/numpy.hanning.html
• added inner, https://numpy.org/doc/stable/reference/generated/numpy.inner.html
• added isneginf, https://numpy.org/doc/stable/reference/generated/numpy.isneginf.html
• added isposinf, https://numpy.org/doc/stable/reference/generated/numpy.isposinf.html
• added kaiser, https://numpy.org/doc/stable/reference/generated/numpy.kaiser.html
• added logb, logarithm of with an arbitrary base b
• added logspace, https://numpy.org/doc/stable/reference/generated/numpy.logspace.html
• added nth_root, the nth root of a value
• added place, https://numpy.org/doc/stable/reference/generated/numpy.place.html
• added select function, https://numpy.org/doc/stable/reference/generated/numpy.select.html
• fmod and the modulus % operator now work with float dtypes
• added Hamming EDAC (Error Dectection and Correction) encode and decode functions, https://en.wikipedia.org/wiki/Hamming_code
• various minor performance improvements and bug fixes

Version 2.6.2

• tofile and fromfile will now work for generic struct dtypes

Version 2.6.1

• Added more delimiter support to fromfile method

Version 2.6.0

• Added linalg::solve

Version 2.5.1

• Made behavior of interp function consistent with NumPy when passing in non-sorted data

Version 2.5.0

• Added additional NdArray slice overloads
• Removed NO_MULTITHREAD compiler flag and replaced with NUMCPP_USE_MULTITHREAD so that single threaded is now the default
• renamed NO_USE_BOOST compiler flag to NUMCPP_NO_USE_BOOST
• renamed INCLUDE_BOOST_PYTHON_INTERFACE compiler flat to NUMCPP_INCLUDE_BOOST_PYTHON_INTERFACE
• renamed INCLUDE_PYBIND_PYTHON_INTERFACE compiler flag to NUMCPP_INCLUDE_PYBIND_PYTHON_INTERFACE

Version 2.4.2

• Fixed a type error with percentile and nanpercentile
• Updated doxygen API css

Version 2.4.1

• Fixed a build error for multiply defined symbols of isLittleEndian

Version 2.4.0

• Compile with NO_USE_BOOST definition to remove the Boost libraries as a dependency, with reduced functionality:
  • gcd with a pair of values (still available using a C++17 compliant compiler)
  • gcd array
  • lcm with a pair of values (still available using a C++17 compliant compiler)
  • lcm array
  • polynomial::chebyshev_t
  • polynomial::chebyshev_u
  • polynomial::hermite (still available using a C++17 compliant compiler)
  • polynomial::laguerre (still available using a C++17 compliant compiler)
  • polynomial::legendre_p (still available using a C++17 compliant compiler)
  • polynomial::legendre_q
  • polynomial::spherical_harmonic
  • random::beta
  • random::laplace
  • random::nonCentralChiSquared
  • random::triangle
  • random::uniformOnSphere
  • special::airy_ai
  • special::airy_ai_prime
  • special::airy_bi
  • special::airy_bi_prime
  • special::bernoulli
  • special::bessel_in (still available using a C++17 compliant compiler)
  • special::bessel_in_prime
  • special::bessel_jn (still available using a C++17 compliant compiler)
  • special::bessel_jn_prime
  • special::bessel_kn (still available using a C++17 compliant compiler)
  • special::bessel_kn_prime
  • special::bessel_yn (still available using a C++17 compliant compiler)
  • special::bessel_yn_prime
  • special::beta (still available using a C++17 compliant compiler)
  • special::cyclic_hankel_1
  • special::cyclic_hankel_2
  • special::digamma
  • special::erf
  • special::erf_inv
  • special::erfc
  • special::erfc_inv
  • special::gamma
  • special::gamma1pm1
  • special::log_gamma
  • special::polygamma
  • special::prime
  • special::riemann_zeta (still available using a C++17 compliant compiler)
  • special::spherical_bessel_jn (still available using a C++17 compliant compiler)
  • special::spherical_bessel_yn (still available using a C++17 compliant compiler)
  • special::spherical_hankel_1
  • special::spherical_hankel_2
  • special::trigamma
• Added replace option into random::choice
• Added nan_to_num function
• Added complete and incomplete elliptical integrals of the first, second, and third kind to special namespace (requires either Boost or C++17 compliant compiler)
• Added exponential integral to special namespace (requires either Boost or C++17 compliant compiler)
• Added NO_MULTITHREAD compile definition to turn off algorithm multithreading from compliant compilers

Version 2.3.1

• Added option for user defined bin edges in histogram() function

Version 2.3.0

• Added slicing to DataCube class
  

Version 2.2.0

• Added additional where() overloads to match NumPy functionality
  

Version 2.1.0

• Improved installation and usage with CMake find_package support
• Various minor improvements

Version 2.0.0

• Dropped support of C++11, now requires a C++14 or higher compiler
• Added support for std::complex<T>, closing Issue #58
• Added more NdArray constructors for STL containers including std::vector<std::vector<T>>, closing Issue #59
• Added polyfit routine inline with Numpy polyfit, closing Issue #61
• Added ability to use NdArray as container for generic structs
• Non-linear least squares fitting using Gauss-Newton
• Root finding routines
• Numerical integration routines
• lu_decomposition and pivotLU_decomposition added to Linalg namespace
• New STL iterators added to NdArray
  • iterator
  • const_iterator
  • reverse_iterator
  • const_reverse_iterator
  • column_iterator
  • const_column_iterator
  • reverse_column_iterator
  • const_reverse_column_iterator
• Added rodriguesRotation and wahbasProblem to Rotations namespace
• Various efficiency and/or bug fixes