KMath

[Unreleased]

fun annotation for SAM interfaces in library
Explicit public visibility for all public APIs
Better trigonometric and hyperbolic functions for AutoDiffField (https://github.com/mipt-npm/kmath/pull/140)
Automatic README generation for features (#139)
Native support for memory, core and dimensions
kmath-ejml to supply EJML SimpleMatrix wrapper (https://github.com/mipt-npm/kmath/pull/136)
A separate Symbol entity, which is used for global unbound symbol.
A Symbol indexing scope.
Basic optimization API for Commons-math.
Chi squared optimization for array-like data in CM
Fitting utility object in prob/stat
ND4J support module submitting NDStructure and NDAlgebra over INDArray
Coroutine-deterministic Monte-Carlo scope with a random number generator
Some minor utilities to kmath-for-real
Generic operation result parameter to MatrixContext
New MatrixFeature interfaces for matrix decompositions
Basic Quaternion vector support in kmath-complex.

Package changed from scientifik to kscience.kmath
Gradle version: 6.6 -> 6.8
Minor exceptions refactor (throwing IllegalArgumentException by argument checks instead of IllegalStateException)
Polynomial secondary constructor made function
Kotlin version: 1.3.72 -> 1.4.21
kmath-ast doesn't depend on heavy kotlin-reflect library
Full autodiff refactoring based on Symbol
kmath-prob renamed to kmath-stat
Grid generators moved to kmath-for-real
Use Point<Double> instead of specialized type in kmath-for-real
Optimized dot product for buffer matrices moved to kmath-for-real
EjmlMatrix context is an object
Matrix LUP inverse renamed to inverseWithLup
NumericAlgebra moved outside of regular algebra chain (Ring no longer implements it).
Features moved to NDStructure and became transparent.
Capitalization of LUP in many names changed to Lup.
Refactored NDStructure algebra to be more simple, preferring under-the-hood conversion to explicit NDStructure types
Refactor histograms. They are marked as prototype
Complex and related features moved to a separate module kmath-complex
Refactor AlgebraElement
Add out projection to Buffer generic

Functional Expressions API
Mathematical Syntax Tree, its interpreter and API
String to MST parser (https://github.com/mipt-npm/kmath/pull/120)
MST to JVM bytecode translator (https://github.com/mipt-npm/kmath/pull/94)
FloatBuffer (specialized MutableBuffer over FloatArray)
FlaggedBuffer to associate primitive numbers buffer with flags (to mark values infinite or missing, etc.)
Specialized builder functions for all primitive buffers like IntBuffer(25) { it + 1 } (https://github.com/mipt-npm/kmath/pull/125)
Interface NumericAlgebra where number operation is available to convert numbers to algebraic elements
Inverse trigonometric functions support in ExtendedField (asin, acos, atan) (https://github.com/mipt-npm/kmath/pull/114)
New space extensions: average and averageWith
Local coding conventions
Geometric Domains API in kmath-core
Blocking chains in kmath-coroutines
Full hyperbolic functions support and default implementations within ExtendedField
Norm support for Complex

readAsMemory now has throws IOException in JVM signature.
Several functions taking functional types were made inline.
Several functions taking functional types now have callsInPlace contracts.
BigInteger and BigDecimal algebra: JBigDecimalField has companion object with default math context; minor optimizations
power(T, Int) extension function has preconditions and supports Field<T>
Memory objects have more preconditions (overflow checking)
tg function is renamed to tan (https://github.com/mipt-npm/kmath/pull/114)
Gradle version: 6.3 -> 6.6
Moved probability distributions to commons-rng and to kmath-prob

Missing copy method in Memory implementation on JS (https://github.com/mipt-npm/kmath/pull/106)
D3.dim value in kmath-dimensions
Multiplication in integer rings in kmath-core (https://github.com/mipt-npm/kmath/pull/101)
Commons RNG compatibility (https://github.com/mipt-npm/kmath/issues/93)
Multiplication of BigInt by scalar