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Feature: Polynomials and rational functions #469

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lounres merged 132 commits from feature/polynomials into dev 2022-07-28 18:04:06 +03:00
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1 changed files with 44 additions and 12 deletions
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kmath-functions/src/commonMain/kotlin/space/kscience/kmath/functions/listConstructors.kt
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@ -14,52 +14,84 @@ import space.kscience.kmath.operations.Ring
/**
* Returns a [ListPolynomial] instance with given [coefficients]. The collection of coefficients will be reversed if
* [reverse] parameter is true.
* Constructs a [ListPolynomial] instance with provided [coefficients]. The collection of coefficients will be reversed
* if [reverse] parameter is true.
*/
@Suppress("FunctionName")
public fun <C> ListPolynomial(coefficients: List<C>, reverse: Boolean = false): ListPolynomial<C> =
ListPolynomial(with(coefficients) { if (reverse) reversed() else this })
/**
* Returns a [ListPolynomial] instance with given [coefficients]. The collection of coefficients will be reversed if
* [reverse] parameter is true.
* Constructs a [ListPolynomial] instance with provided [coefficients]. The collection of coefficients will be reversed
* if [reverse] parameter is true.
*/
@Suppress("FunctionName")
public fun <C> ListPolynomial(vararg coefficients: C, reverse: Boolean = false): ListPolynomial<C> =
ListPolynomial(with(coefficients) { if (reverse) reversed() else toList() })
/**
* Represents [this] constant as a [ListPolynomial].
*/
public fun <C> C.asListPolynomial() : ListPolynomial<C> = ListPolynomial(listOf(this))
// Waiting for context receivers :( FIXME: Replace with context receivers when they will be available
/**
* Constructs [ListRationalFunction] instance with numerator and denominator constructed with provided
* [numeratorCoefficients] and [denominatorCoefficients]. The both collections of coefficients will be reversed if
* [reverse] parameter is true.
*/
@Suppress("FunctionName")
public fun <C> ListRationalFunction(numeratorCoefficients: List<C>, denominatorCoefficients: List<C>, reverse: Boolean = false): ListRationalFunction<C> =
ListRationalFunction<C>(
ListPolynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } ),
ListPolynomial( with(denominatorCoefficients) { if (reverse) reversed() else this } )
)
@Suppress("FunctionName")
public fun <C, A: Ring<C>> ListRationalFunctionSpace<C, A>.ListRationalFunction(numerator: ListPolynomial<C>): ListRationalFunction<C> =
ListRationalFunction<C>(numerator, polynomialOne)
/**
* Constructs [ListRationalFunction] instance with provided [numerator] and unit denominator.
*/
@Suppress("FunctionName")
public fun <C, A: Ring<C>> A.ListRationalFunction(numerator: ListPolynomial<C>): ListRationalFunction<C> =
ListRationalFunction<C>(numerator, ListPolynomial(listOf(one)))
/**
* Constructs [ListRationalFunction] instance with provided [numerator] and unit denominator.
*/
@Suppress("FunctionName")
public fun <C, A: Ring<C>> ListRationalFunctionSpace<C, A>.ListRationalFunction(numeratorCoefficients: List<C>, reverse: Boolean = false): ListRationalFunction<C> =
ListRationalFunction<C>(
ListPolynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } ),
polynomialOne
)
public fun <C, A: Ring<C>> ListRationalFunctionSpace<C, A>.ListRationalFunction(numerator: ListPolynomial<C>): ListRationalFunction<C> =
ListRationalFunction<C>(numerator, polynomialOne)
/**
* Constructs [ListRationalFunction] instance with numerator constructed with provided [numeratorCoefficients] and unit
* denominator. The collection of numerator coefficients will be reversed if [reverse] parameter is true.
*/
@Suppress("FunctionName")
public fun <C, A: Ring<C>> A.ListRationalFunction(numeratorCoefficients: List<C>, reverse: Boolean = false): ListRationalFunction<C> =
ListRationalFunction<C>(
ListPolynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } ),
ListPolynomial(listOf(one))
)
/**
* Constructs [ListRationalFunction] instance with numerator constructed with provided [numeratorCoefficients] and unit
* denominator. The collection of numerator coefficients will be reversed if [reverse] parameter is true.
*/
@Suppress("FunctionName")
public fun <C, A: Ring<C>> ListRationalFunctionSpace<C, A>.ListRationalFunction(numeratorCoefficients: List<C>, reverse: Boolean = false): ListRationalFunction<C> =
ListRationalFunction<C>(
ListPolynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } ),
polynomialOne
)
/**
* Represents [this] constant as a rational function.
*/ // FIXME: When context receivers will be ready, delete this function and uncomment the following two
public fun <C, A: Ring<C>> C.asListRationalFunction(ring: A) : ListRationalFunction<C> = ring.ListRationalFunction(asListPolynomial())
///**
// * Represents [this] constant as a rational function.
// */
//context(A)
//public fun <C, A: Ring<C>> C.asListRationalFunction() : ListRationalFunction<C> = ListRationalFunction(asListPolynomial())
///**
// * Represents [this] constant as a rational function.
// */
//context(ListRationalFunctionSpace<C, A>)
//public fun <C, A: Ring<C>> C.asListRationalFunction() : ListRationalFunction<C> = ListRationalFunction(asListPolynomial())