forked from kscience/kmath
1. Prototyped Rational Functions
2. Added abstract interfaces for removing boilerplates 3. Changed or added default values in interfaces 4. Renamed non-operator `equals` to `equalsTo`, and made it infix
This commit is contained in:
Gleb Minaev
parent
033edd3feb
commit
de53d032af
@ -154,7 +154,7 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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* Check if the instant is NOT zero constant.
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*/
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@JvmName("constantIsNotZero")
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public fun C.isNotZero(): Boolean
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public fun C.isNotZero(): Boolean = !isZero()
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/**
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* Check if the instant is unit constant.
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*/
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@ -164,7 +164,7 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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* Check if the instant is NOT unit constant.
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*/
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@JvmName("constantIsNotOne")
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public fun C.isNotOne(): Boolean
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public fun C.isNotOne(): Boolean = !isOne()
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/**
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* Check if the instant is minus unit constant.
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*/
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@ -174,7 +174,7 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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* Check if the instant is NOT minus unit constant.
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*/
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@JvmName("constantIsNotMinusOne")
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public fun C.isNotMinusOne(): Boolean
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public fun C.isNotMinusOne(): Boolean = !isMinusOne()
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// endregion
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// region Constant-polynomial relation
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@ -232,27 +232,27 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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/**
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* Check if the instant is zero polynomial.
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*/
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public fun P.isZero(): Boolean = this == zero
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public fun P.isZero(): Boolean = this equalsTo zero
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/**
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* Check if the instant is NOT zero polynomial.
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*/
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public fun P.isNotZero(): Boolean = this != zero
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public fun P.isNotZero(): Boolean = !isZero()
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/**
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* Check if the instant is unit polynomial.
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*/
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public fun P.isOne(): Boolean = this == one
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public fun P.isOne(): Boolean = this equalsTo one
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/**
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* Check if the instant is NOT unit polynomial.
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*/
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public fun P.isNotOne(): Boolean = this != one
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public fun P.isNotOne(): Boolean = !isOne()
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/**
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* Check if the instant is minus unit polynomial.
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*/
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public fun P.isMinusOne(): Boolean = this == -one
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public fun P.isMinusOne(): Boolean = this equalsTo -one
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/**
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* Check if the instant is NOT minus unit polynomial.
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*/
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public fun P.isNotMinusOne(): Boolean = this != -one
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public fun P.isNotMinusOne(): Boolean = !isMinusOne()
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/**
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* Instance of zero polynomial (zero of the polynomial ring).
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@ -266,8 +266,11 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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/**
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* Checks equality of the polynomials.
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*/
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@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
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public fun P.equals(other: P): Boolean
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public infix fun P.equalsTo(other: P): Boolean
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/**
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* Checks NOT equality of the polynomials.
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*/
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public infix fun P.notEqualsTo(other: P): Boolean = !(this equalsTo other)
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// endregion
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// Not sure is it necessary...
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@ -310,4 +313,107 @@ public interface AbstractPolynomialSpace<C, P: AbstractPolynomial<C>> : Ring<P>
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override fun add(left: P, right: P): P = left + right
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override fun multiply(left: P, right: P): P = left * right
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// endregion
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}
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/**
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* Abstraction of ring of polynomials of type [P] over ring of constants of type [C].
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*
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* @param C the type of constants. Polynomials have them as a coefficients in their terms.
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* @param P the type of polynomials.
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*/
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@Suppress("INAPPLICABLE_JVM_NAME", "PARAMETER_NAME_CHANGED_ON_OVERRIDE")
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public interface AbstractPolynomialSpaceOverRing<C, P: AbstractPolynomial<C>, A: Ring<C>> : AbstractPolynomialSpace<C, P> {
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public val ring: A
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// region Constant-integer relation
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/**
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* Returns sum of the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to adding [other] copies of unit of underlying ring to [this].
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*/
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@JvmName("constantIntPlus")
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public override operator fun C.plus(other: Int): C = ring { optimizedAddMultiplied(this@plus, one, other) }
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/**
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* Returns difference between the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to subtraction [other] copies of unit of underlying ring from [this].
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*/
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@JvmName("constantIntMinus")
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public override operator fun C.minus(other: Int): C = ring { optimizedAddMultiplied(this@minus, one, -other) }
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/**
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* Returns product of the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to sum of [other] copies of [this].
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*/
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@JvmName("constantIntTimes")
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public override operator fun C.times(other: Int): C = ring { optimizedMultiply(this@times, other) }
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// endregion
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// region Integer-constant relation
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/**
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* Returns sum of the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to adding [this] copies of unit of underlying ring to [other].
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*/
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@JvmName("intConstantPlus")
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public override operator fun Int.plus(other: C): C = ring { optimizedAddMultiplied(other, one, this@plus) }
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/**
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* Returns difference between the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to subtraction [this] copies of unit of underlying ring from [other].
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*/
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@JvmName("intConstantMinus")
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public override operator fun Int.minus(other: C): C = ring { optimizedAddMultiplied(-other, one, this@minus) }
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/**
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* Returns product of the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to sum of [this] copies of [other].
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*/
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@JvmName("intConstantTimes")
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public override operator fun Int.times(other: C): C = ring { optimizedMultiply(other, this@times) }
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// endregion
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// region Constant-constant relation
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/**
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* Returns negation of the constant.
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*/
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@JvmName("constantUnaryMinus")
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@JsName("constantUnaryMinus")
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public override operator fun C.unaryMinus(): C = ring { -this@unaryMinus }
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/**
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* Returns sum of the constants.
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*/
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@JvmName("constantPlus")
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@JsName("constantPlus")
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public override operator fun C.plus(other: C): C = ring { this@plus + other }
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/**
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* Returns difference of the constants.
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*/
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@JvmName("constantMinus")
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@JsName("constantMinus")
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public override operator fun C.minus(other: C): C = ring { this@minus - other }
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/**
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* Returns product of the constants.
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*/
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@JvmName("constantTimes")
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@JsName("constantTimes")
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public override operator fun C.times(other: C): C = ring { this@times * other }
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/**
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* Check if the instant is zero constant.
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*/
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@JvmName("constantIsZero")
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public override fun C.isZero(): Boolean = ring { this == zero }
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/**
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* Check if the instant is unit constant.
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*/
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@JvmName("constantIsOne")
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public override fun C.isOne(): Boolean = ring { this == one }
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/**
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* Check if the instant is minus unit constant.
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*/
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@JvmName("constantIsMinusOne")
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public override fun C.isMinusOne(): Boolean = ring { this == -one }
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// endregion
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}
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@ -13,7 +13,12 @@ import kotlin.jvm.JvmName
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/**
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* Abstraction of rational function.
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*/
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public interface AbstractRationalFunction<C, P: AbstractPolynomial<C>>
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public interface AbstractRationalFunction<C, P: AbstractPolynomial<C>> {
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public val numerator: P
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public val denominator: P
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public operator fun component1(): P = numerator
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public operator fun component2(): P = denominator
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}
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@Suppress("INAPPLICABLE_JVM_NAME", "PARAMETER_NAME_CHANGED_ON_OVERRIDE")
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public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R: AbstractRationalFunction<C, P>> : Ring<R> {
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@ -190,7 +195,7 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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* Check if the instant is NOT zero constant.
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*/
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@JvmName("constantIsNotZero")
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public fun C.isNotZero(): Boolean
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public fun C.isNotZero(): Boolean = !isZero()
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/**
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* Check if the instant is unit constant.
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*/
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@ -200,7 +205,7 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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* Check if the instant is NOT unit constant.
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*/
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@JvmName("constantIsNotOne")
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public fun C.isNotOne(): Boolean
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public fun C.isNotOne(): Boolean = !isOne()
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/**
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* Check if the instant is minus unit constant.
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*/
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@ -210,7 +215,7 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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* Check if the instant is NOT minus unit constant.
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*/
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@JvmName("constantIsNotMinusOne")
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public fun C.isNotMinusOne(): Boolean
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public fun C.isNotMinusOne(): Boolean = !isMinusOne()
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// endregion
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// region Constant-polynomial relation
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@ -268,42 +273,45 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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/**
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* Check if the instant is zero polynomial.
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*/
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public fun P.isZero(): Boolean = this == zeroPolynomial
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public fun P.isZero(): Boolean = this equalsTo polynomialZero
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/**
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* Check if the instant is NOT zero polynomial.
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*/
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public fun P.isNotZero(): Boolean = this != zeroPolynomial
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public fun P.isNotZero(): Boolean = !isZero()
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/**
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* Check if the instant is unit polynomial.
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*/
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public fun P.isOne(): Boolean = this == onePolynomial
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public fun P.isOne(): Boolean = this equalsTo polynomialOne
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/**
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* Check if the instant is NOT unit polynomial.
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*/
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public fun P.isNotOne(): Boolean = this != onePolynomial
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public fun P.isNotOne(): Boolean = !isOne()
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/**
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* Check if the instant is minus unit polynomial.
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*/
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public fun P.isMinusOne(): Boolean = this == -onePolynomial
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public fun P.isMinusOne(): Boolean = this equalsTo -polynomialOne
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/**
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* Check if the instant is NOT minus unit polynomial.
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*/
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public fun P.isNotMinusOne(): Boolean = this != -onePolynomial
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public fun P.isNotMinusOne(): Boolean = !isMinusOne()
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/**
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* Instance of zero polynomial (zero of the polynomial ring).
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*/
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public val zeroPolynomial: P
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public val polynomialZero: P
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/**
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* Instance of unit polynomial (unit of the polynomial ring).
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*/
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public val onePolynomial: P
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public val polynomialOne: P
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/**
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* Checks equality of the polynomials.
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*/
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@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
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public fun P.equals(other: P): Boolean
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public infix fun P.equalsTo(other: P): Boolean
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/**
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* Checks NOT equality of the polynomials.
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*/
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public infix fun P.notEqualsTo(other: P): Boolean = !(this equalsTo other)
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// endregion
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// region Constant-rational relation
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@ -391,27 +399,27 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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/**
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* Check if the instant is zero rational function.
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*/
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public fun R.isZero(): Boolean = this == zero
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public fun R.isZero(): Boolean = this equalsTo zero
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/**
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* Check if the instant is NOT zero rational function.
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*/
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public fun R.isNotZero(): Boolean = this != zero
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public fun R.isNotZero(): Boolean = !isZero()
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/**
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* Check if the instant is unit rational function.
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*/
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public fun R.isOne(): Boolean = this == one
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public fun R.isOne(): Boolean = this equalsTo one
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/**
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* Check if the instant is NOT unit rational function.
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*/
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public fun R.isNotOne(): Boolean = this != one
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public fun R.isNotOne(): Boolean = !isOne()
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/**
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* Check if the instant is minus unit rational function.
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*/
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public fun R.isMinusOne(): Boolean = this == -one
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public fun R.isMinusOne(): Boolean = this equalsTo -one
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/**
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* Check if the instant is NOT minus unit rational function.
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*/
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public fun R.isNotMinusOne(): Boolean = this != -one
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public fun R.isNotMinusOne(): Boolean = !isMinusOne()
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/**
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* Instance of zero rational function (zero of the rational functions ring).
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@ -425,8 +433,11 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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/**
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* Checks equality of the rational functions.
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*/
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@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
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public fun R.equals(other: R): Boolean
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public infix fun R.equalsTo(other: R): Boolean
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/**
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* Checks NOT equality of the polynomials.
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*/
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public infix fun R.notEqualsTo(other: R): Boolean = !(this equalsTo other)
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// endregion
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// Not sure is it necessary...
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@ -453,35 +464,31 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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* Checks if the instant is **not** constant non-zero polynomial (of degree no more than 0) over considered ring.
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*/
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public fun P.isNotNonZeroConstant(): Boolean = !isNonZeroConstant()
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/**
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* If polynomial is a constant polynomial represents and returns it as constant.
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* Otherwise, (when the polynomial is not constant polynomial) returns `null`.
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*/
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public fun P.asConstantOrNull(): C?
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/**
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* If polynomial is a constant polynomial represents and returns it as constant.
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* Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception.
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*/
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public fun P.asConstant(): C = asConstantOrNull() ?: error("Can not represent non-constant polynomial as a constant")
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// endregion
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// Not sure is it necessary...
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// region Polynomial properties
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// region Rational properties
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/**
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* Checks if the instant is constant polynomial (of degree no more than 0) over considered ring.
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* Degree of the polynomial, [see also](https://en.wikipedia.org/wiki/Degree_of_a_polynomial). If the polynomial is
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* zero, degree is -1.
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*/
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public fun R.isConstant(): Boolean
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public val R.numeratorDegree: Int get() = numerator.degree
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/**
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* Checks if the instant is **not** constant polynomial (of degree no more than 0) over considered ring.
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* Degree of the polynomial, [see also](https://en.wikipedia.org/wiki/Degree_of_a_polynomial). If the polynomial is
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* zero, degree is -1.
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*/
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public fun R.isNotConstant(): Boolean = !isConstant()
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/**
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* Checks if the instant is constant non-zero polynomial (of degree no more than 0) over considered ring.
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*/
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public fun R.isNonZeroConstant(): Boolean
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/**
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* Checks if the instant is **not** constant non-zero polynomial (of degree no more than 0) over considered ring.
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*/
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public fun R.isNotNonZeroConstant(): Boolean = !isNonZeroConstant()
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public fun R.asConstantOrNull(): C?
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public fun R.asConstant(): C = asConstantOrNull() ?: error("Can not represent non-constant polynomial as a constant")
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public val R.denominatorDegree: Int get() = denominator.degree
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// TODO: Перенести в реализацию
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// fun R.substitute(argument: C): C
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@ -501,5 +508,416 @@ public interface AbstractRationalFunctionalSpace<C, P: AbstractPolynomial<C>, R:
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// region Legacy
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override fun add(left: R, right: R): R = left + right
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override fun multiply(left: R, right: R): R = left * right
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// endregion
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}
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@Suppress("INAPPLICABLE_JVM_NAME", "PARAMETER_NAME_CHANGED_ON_OVERRIDE")
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public interface AbstractRationalFunctionalSpaceOverRing<C, P: AbstractPolynomial<C>, R: AbstractRationalFunction<C, P>, A: Ring<C>> : AbstractRationalFunctionalSpace<C, P, R> {
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public val ring: A
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// region Constant-integer relation
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/**
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* Returns sum of the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to adding [other] copies of unit of underlying ring to [this].
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*/
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@JvmName("constantIntPlus")
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public override operator fun C.plus(other: Int): C = ring { optimizedAddMultiplied(this@plus, one, other) }
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/**
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* Returns difference between the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to subtraction [other] copies of unit of underlying ring from [this].
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*/
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@JvmName("constantIntMinus")
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public override operator fun C.minus(other: Int): C = ring { optimizedAddMultiplied(this@minus, one, -other) }
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/**
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* Returns product of the constant and the integer represented as constant (member of underlying ring).
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*
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* The operation is equivalent to sum of [other] copies of [this].
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*/
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@JvmName("constantIntTimes")
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public override operator fun C.times(other: Int): C = ring { optimizedMultiply(this@times, other) }
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// endregion
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// region Integer-constant relation
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/**
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* Returns sum of the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to adding [this] copies of unit of underlying ring to [other].
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*/
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@JvmName("intConstantPlus")
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public override operator fun Int.plus(other: C): C = ring { optimizedAddMultiplied(other, one, this@plus) }
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/**
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* Returns difference between the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to subtraction [this] copies of unit of underlying ring from [other].
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*/
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@JvmName("intConstantMinus")
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public override operator fun Int.minus(other: C): C = ring { optimizedAddMultiplied(-other, one, this@minus) }
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/**
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* Returns product of the integer represented as constant (member of underlying ring) and the constant.
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*
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* The operation is equivalent to sum of [this] copies of [other].
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*/
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@JvmName("intConstantTimes")
|
||||
public override operator fun Int.times(other: C): C = ring { optimizedMultiply(other, this@times) }
|
||||
// endregion
|
||||
|
||||
// region Constant-constant relation
|
||||
/**
|
||||
* Returns the same constant.
|
||||
*/
|
||||
@JvmName("constantUnaryPlus")
|
||||
@JsName("constantUnaryPlus")
|
||||
public override operator fun C.unaryPlus(): C = ring { +this@unaryPlus }
|
||||
/**
|
||||
* Returns negation of the constant.
|
||||
*/
|
||||
@JvmName("constantUnaryMinus")
|
||||
@JsName("constantUnaryMinus")
|
||||
public override operator fun C.unaryMinus(): C = ring { -this@unaryMinus }
|
||||
/**
|
||||
* Returns sum of the constants.
|
||||
*/
|
||||
@JvmName("constantPlus")
|
||||
@JsName("constantPlus")
|
||||
public override operator fun C.plus(other: C): C = ring { this@plus + other }
|
||||
/**
|
||||
* Returns difference of the constants.
|
||||
*/
|
||||
@JvmName("constantMinus")
|
||||
@JsName("constantMinus")
|
||||
public override operator fun C.minus(other: C): C = ring { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constants.
|
||||
*/
|
||||
@JvmName("constantTimes")
|
||||
@JsName("constantTimes")
|
||||
public override operator fun C.times(other: C): C = ring { this@times * other }
|
||||
|
||||
/**
|
||||
* Check if the instant is zero constant.
|
||||
*/
|
||||
@JvmName("constantIsZero")
|
||||
public override fun C.isZero(): Boolean = ring { this@isZero.isZero() }
|
||||
/**
|
||||
* Check if the instant is NOT zero constant.
|
||||
*/
|
||||
@JvmName("constantIsNotZero")
|
||||
public override fun C.isNotZero(): Boolean = ring { this@isNotZero.isNotZero() }
|
||||
/**
|
||||
* Check if the instant is unit constant.
|
||||
*/
|
||||
@JvmName("constantIsOne")
|
||||
public override fun C.isOne(): Boolean = ring { this@isOne.isOne() }
|
||||
/**
|
||||
* Check if the instant is NOT unit constant.
|
||||
*/
|
||||
@JvmName("constantIsNotOne")
|
||||
public override fun C.isNotOne(): Boolean = ring { this@isNotOne.isNotOne() }
|
||||
/**
|
||||
* Check if the instant is minus unit constant.
|
||||
*/
|
||||
@JvmName("constantIsMinusOne")
|
||||
public override fun C.isMinusOne(): Boolean = ring { this@isMinusOne.isMinusOne() }
|
||||
/**
|
||||
* Check if the instant is NOT minus unit constant.
|
||||
*/
|
||||
@JvmName("constantIsNotMinusOne")
|
||||
public override fun C.isNotMinusOne(): Boolean = ring { this@isNotMinusOne.isNotMinusOne() }
|
||||
// endregion
|
||||
}
|
||||
|
||||
@Suppress("INAPPLICABLE_JVM_NAME", "PARAMETER_NAME_CHANGED_ON_OVERRIDE")
|
||||
public interface AbstractRationalFunctionalSpaceOverPolynomialSpace<C, P: AbstractPolynomial<C>, R: AbstractRationalFunction<C, P>, A: Ring<C>> : AbstractRationalFunctionalSpace<C, P, R> {
|
||||
|
||||
public val polynomialRing: AbstractPolynomialSpace<C, P>
|
||||
|
||||
// region Constant-integer relation
|
||||
/**
|
||||
* Returns sum of the constant and the integer represented as constant (member of underlying ring).
|
||||
*
|
||||
* The operation is equivalent to adding [other] copies of unit of underlying ring to [this].
|
||||
*/
|
||||
@JvmName("constantIntPlus")
|
||||
public override operator fun C.plus(other: Int): C = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the constant and the integer represented as constant (member of underlying ring).
|
||||
*
|
||||
* The operation is equivalent to subtraction [other] copies of unit of underlying ring from [this].
|
||||
*/
|
||||
@JvmName("constantIntMinus")
|
||||
public override operator fun C.minus(other: Int): C = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constant and the integer represented as constant (member of underlying ring).
|
||||
*
|
||||
* The operation is equivalent to sum of [other] copies of [this].
|
||||
*/
|
||||
@JvmName("constantIntTimes")
|
||||
public override operator fun C.times(other: Int): C = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Integer-constant relation
|
||||
/**
|
||||
* Returns sum of the integer represented as constant (member of underlying ring) and the constant.
|
||||
*
|
||||
* The operation is equivalent to adding [this] copies of unit of underlying ring to [other].
|
||||
*/
|
||||
@JvmName("intConstantPlus")
|
||||
public override operator fun Int.plus(other: C): C = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the integer represented as constant (member of underlying ring) and the constant.
|
||||
*
|
||||
* The operation is equivalent to subtraction [this] copies of unit of underlying ring from [other].
|
||||
*/
|
||||
@JvmName("intConstantMinus")
|
||||
public override operator fun Int.minus(other: C): C = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the integer represented as constant (member of underlying ring) and the constant.
|
||||
*
|
||||
* The operation is equivalent to sum of [this] copies of [other].
|
||||
*/
|
||||
@JvmName("intConstantTimes")
|
||||
public override operator fun Int.times(other: C): C = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Polynomial-integer relation
|
||||
/**
|
||||
* Returns sum of the constant and the integer represented as polynomial.
|
||||
*
|
||||
* The operation is equivalent to adding [other] copies of unit polynomial to [this].
|
||||
*/
|
||||
public override operator fun P.plus(other: Int): P = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the constant and the integer represented as polynomial.
|
||||
*
|
||||
* The operation is equivalent to subtraction [other] copies of unit polynomial from [this].
|
||||
*/
|
||||
public override operator fun P.minus(other: Int): P = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constant and the integer represented as polynomial.
|
||||
*
|
||||
* The operation is equivalent to sum of [other] copies of [this].
|
||||
*/
|
||||
public override operator fun P.times(other: Int): P = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Integer-polynomial relation
|
||||
/**
|
||||
* Returns sum of the integer represented as polynomial and the constant.
|
||||
*
|
||||
* The operation is equivalent to adding [this] copies of unit polynomial to [other].
|
||||
*/
|
||||
public override operator fun Int.plus(other: P): P = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the integer represented as polynomial and the constant.
|
||||
*
|
||||
* The operation is equivalent to subtraction [this] copies of unit polynomial from [other].
|
||||
*/
|
||||
public override operator fun Int.minus(other: P): P = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the integer represented as polynomial and the constant.
|
||||
*
|
||||
* The operation is equivalent to sum of [this] copies of [other].
|
||||
*/
|
||||
public override operator fun Int.times(other: P): P = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Constant-constant relation
|
||||
/**
|
||||
* Returns the same constant.
|
||||
*/
|
||||
@JvmName("constantUnaryPlus")
|
||||
@JsName("constantUnaryPlus")
|
||||
public override operator fun C.unaryPlus(): C = polynomialRing { +this@unaryPlus }
|
||||
/**
|
||||
* Returns negation of the constant.
|
||||
*/
|
||||
@JvmName("constantUnaryMinus")
|
||||
@JsName("constantUnaryMinus")
|
||||
public override operator fun C.unaryMinus(): C = polynomialRing { -this@unaryMinus }
|
||||
/**
|
||||
* Returns sum of the constants.
|
||||
*/
|
||||
@JvmName("constantPlus")
|
||||
@JsName("constantPlus")
|
||||
public override operator fun C.plus(other: C): C = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference of the constants.
|
||||
*/
|
||||
@JvmName("constantMinus")
|
||||
@JsName("constantMinus")
|
||||
public override operator fun C.minus(other: C): C = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constants.
|
||||
*/
|
||||
@JvmName("constantTimes")
|
||||
@JsName("constantTimes")
|
||||
public override operator fun C.times(other: C): C = polynomialRing { this@times * other }
|
||||
|
||||
/**
|
||||
* Check if the instant is zero constant.
|
||||
*/
|
||||
@JvmName("constantIsZero")
|
||||
public override fun C.isZero(): Boolean = polynomialRing { this@isZero.isZero() }
|
||||
/**
|
||||
* Check if the instant is NOT zero constant.
|
||||
*/
|
||||
@JvmName("constantIsNotZero")
|
||||
public override fun C.isNotZero(): Boolean = polynomialRing { this@isNotZero.isNotZero() }
|
||||
/**
|
||||
* Check if the instant is unit constant.
|
||||
*/
|
||||
@JvmName("constantIsOne")
|
||||
public override fun C.isOne(): Boolean = polynomialRing { this@isOne.isOne() }
|
||||
/**
|
||||
* Check if the instant is NOT unit constant.
|
||||
*/
|
||||
@JvmName("constantIsNotOne")
|
||||
public override fun C.isNotOne(): Boolean = polynomialRing { this@isNotOne.isNotOne() }
|
||||
/**
|
||||
* Check if the instant is minus unit constant.
|
||||
*/
|
||||
@JvmName("constantIsMinusOne")
|
||||
public override fun C.isMinusOne(): Boolean = polynomialRing { this@isMinusOne.isMinusOne() }
|
||||
/**
|
||||
* Check if the instant is NOT minus unit constant.
|
||||
*/
|
||||
@JvmName("constantIsNotMinusOne")
|
||||
public override fun C.isNotMinusOne(): Boolean = polynomialRing { this@isNotMinusOne.isNotMinusOne() }
|
||||
// endregion
|
||||
|
||||
// region Constant-polynomial relation
|
||||
/**
|
||||
* Returns sum of the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun C.plus(other: P): P = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun C.minus(other: P): P = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun C.times(other: P): P = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Polynomial-constant relation
|
||||
/**
|
||||
* Returns sum of the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun P.plus(other: C): P = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference between the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun P.minus(other: C): P = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the constant represented as polynomial and the polynomial.
|
||||
*/
|
||||
public override operator fun P.times(other: C): P = polynomialRing { this@times * other }
|
||||
// endregion
|
||||
|
||||
// region Polynomial-polynomial relation
|
||||
/**
|
||||
* Returns the same polynomial.
|
||||
*/
|
||||
public override operator fun P.unaryPlus(): P = polynomialRing { +this@unaryPlus }
|
||||
/**
|
||||
* Returns negation of the polynomial.
|
||||
*/
|
||||
public override operator fun P.unaryMinus(): P = polynomialRing { -this@unaryMinus }
|
||||
/**
|
||||
* Returns sum of the polynomials.
|
||||
*/
|
||||
public override operator fun P.plus(other: P): P = polynomialRing { this@plus + other }
|
||||
/**
|
||||
* Returns difference of the polynomials.
|
||||
*/
|
||||
public override operator fun P.minus(other: P): P = polynomialRing { this@minus - other }
|
||||
/**
|
||||
* Returns product of the polynomials.
|
||||
*/
|
||||
public override operator fun P.times(other: P): P = polynomialRing { this@times * other }
|
||||
|
||||
/**
|
||||
* Check if the instant is zero polynomial.
|
||||
*/
|
||||
public override fun P.isZero(): Boolean = polynomialRing { this@isZero.isZero() }
|
||||
/**
|
||||
* Check if the instant is NOT zero polynomial.
|
||||
*/
|
||||
public override fun P.isNotZero(): Boolean = polynomialRing { this@isNotZero.isNotZero() }
|
||||
/**
|
||||
* Check if the instant is unit polynomial.
|
||||
*/
|
||||
public override fun P.isOne(): Boolean = polynomialRing { this@isOne.isOne() }
|
||||
/**
|
||||
* Check if the instant is NOT unit polynomial.
|
||||
*/
|
||||
public override fun P.isNotOne(): Boolean = polynomialRing { this@isNotOne.isNotOne() }
|
||||
/**
|
||||
* Check if the instant is minus unit polynomial.
|
||||
*/
|
||||
public override fun P.isMinusOne(): Boolean = polynomialRing { this@isMinusOne.isMinusOne() }
|
||||
/**
|
||||
* Check if the instant is NOT minus unit polynomial.
|
||||
*/
|
||||
public override fun P.isNotMinusOne(): Boolean = polynomialRing { this@isNotMinusOne.isNotMinusOne() }
|
||||
|
||||
/**
|
||||
* Instance of zero polynomial (zero of the polynomial ring).
|
||||
*/
|
||||
public override val polynomialZero: P get() = polynomialRing.zero
|
||||
/**
|
||||
* Instance of unit polynomial (unit of the polynomial ring).
|
||||
*/
|
||||
public override val polynomialOne: P get() = polynomialRing.one
|
||||
|
||||
/**
|
||||
* Checks equality of the polynomials.
|
||||
*/
|
||||
public override infix fun P.equalsTo(other: P): Boolean = polynomialRing { this@equalsTo equalsTo other }
|
||||
/**
|
||||
* Checks NOT equality of the polynomials.
|
||||
*/
|
||||
public override infix fun P.notEqualsTo(other: P): Boolean = polynomialRing { this@notEqualsTo notEqualsTo other }
|
||||
// endregion
|
||||
|
||||
// Not sure is it necessary...
|
||||
// region Polynomial properties
|
||||
/**
|
||||
* Degree of the polynomial, [see also](https://en.wikipedia.org/wiki/Degree_of_a_polynomial). If the polynomial is
|
||||
* zero, degree is -1.
|
||||
*/
|
||||
public override val P.degree: Int get() = polynomialRing { this@degree.degree }
|
||||
|
||||
/**
|
||||
* Checks if the instant is constant polynomial (of degree no more than 0) over considered ring.
|
||||
*/
|
||||
public override fun P.isConstant(): Boolean = polynomialRing { this@isConstant.isConstant() }
|
||||
/**
|
||||
* Checks if the instant is **not** constant polynomial (of degree no more than 0) over considered ring.
|
||||
*/
|
||||
public override fun P.isNotConstant(): Boolean = polynomialRing { this@isNotConstant.isNotConstant() }
|
||||
/**
|
||||
* Checks if the instant is constant non-zero polynomial (of degree no more than 0) over considered ring.
|
||||
*/
|
||||
public override fun P.isNonZeroConstant(): Boolean = polynomialRing { this@isNonZeroConstant.isNonZeroConstant() }
|
||||
/**
|
||||
* Checks if the instant is **not** constant non-zero polynomial (of degree no more than 0) over considered ring.
|
||||
*/
|
||||
public override fun P.isNotNonZeroConstant(): Boolean = polynomialRing { this@isNotNonZeroConstant.isNotNonZeroConstant() }
|
||||
/**
|
||||
* If polynomial is a constant polynomial represents and returns it as constant.
|
||||
* Otherwise, (when the polynomial is not constant polynomial) returns `null`.
|
||||
*/
|
||||
public override fun P.asConstantOrNull(): C? = polynomialRing { this@asConstantOrNull.asConstantOrNull() }
|
||||
/**
|
||||
* If polynomial is a constant polynomial represents and returns it as constant.
|
||||
* Otherwise, (when the polynomial is not constant polynomial) raises corresponding exception.
|
||||
*/
|
||||
public override fun P.asConstant(): C = polynomialRing { this@asConstant.asConstant() }
|
||||
|
||||
// endregion
|
||||
}
|
||||
@ -13,7 +13,7 @@ import kotlin.math.max
|
||||
*
|
||||
* @param C Ring in which the polynomial is considered.
|
||||
*/
|
||||
public class LabeledPolynomial<C>
|
||||
public data class LabeledPolynomial<C>
|
||||
internal constructor(
|
||||
/**
|
||||
* Map that collects coefficients of the polynomial. Every non-zero monomial
|
||||
@ -788,7 +788,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
|
||||
isZero() -> zero
|
||||
other.isZero() -> zero
|
||||
else -> LabeledPolynomial<C>(
|
||||
buildCoefficients {
|
||||
buildCoefficients(coefficients.size * other.coefficients.size) {
|
||||
for ((degs1, c1) in coefficients) for ((degs2, c2) in other.coefficients) {
|
||||
val degs = degs1.toMutableMap()
|
||||
degs2.mapValuesTo(degs) { (variable, deg) -> degs.getOrElse(variable) { 0u } + deg }
|
||||
@ -804,7 +804,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
|
||||
|
||||
// TODO: Docs
|
||||
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
|
||||
override fun LabeledPolynomial<C>.equals(other: LabeledPolynomial<C>): Boolean =
|
||||
override infix fun LabeledPolynomial<C>.equalsTo(other: LabeledPolynomial<C>): Boolean =
|
||||
when {
|
||||
this === other -> true
|
||||
else -> coefficients.size == other.coefficients.size &&
|
||||
@ -896,15 +896,9 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
|
||||
// public inline operator fun LabeledPolynomial<C>.invoke(argument: Map<Variable, LabeledPolynomial<C>>): LabeledPolynomial<C> = this.substitute(ring, argument)
|
||||
// endregion
|
||||
|
||||
// region Legacy
|
||||
@Suppress("OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
|
||||
override inline fun add(left: LabeledPolynomial<C>, right: LabeledPolynomial<C>): LabeledPolynomial<C> = left + right
|
||||
@Suppress("OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
|
||||
override inline fun multiply(left: LabeledPolynomial<C>, right: LabeledPolynomial<C>): LabeledPolynomial<C> = left * right
|
||||
// endregion
|
||||
|
||||
// region Utilities
|
||||
// TODO: Move to region internal utilities with context receiver
|
||||
@JvmName("applyAndRemoveZerosInternal")
|
||||
internal fun MutableMap<Map<Variable, UInt>, C>.applyAndRemoveZeros(block: MutableMap<Map<Variable, UInt>, C>.() -> Unit) : MutableMap<Map<Variable, UInt>, C> {
|
||||
contract {
|
||||
callsInPlace(block, InvocationKind.EXACTLY_ONCE)
|
||||
@ -916,12 +910,20 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
|
||||
internal fun Map<Map<Variable, UInt>, C>.applyAndRemoveZeros(block: MutableMap<Map<Variable, UInt>, C>.() -> Unit) : Map<Map<Variable, UInt>, C> =
|
||||
toMutableMap().applyAndRemoveZeros(block)
|
||||
@OptIn(ExperimentalTypeInference::class)
|
||||
internal fun buildCoefficients(@BuilderInference builderAction: MutableMap<Map<Variable, UInt>, C>.() -> Unit): Map<Map<Variable, UInt>, C> {
|
||||
internal inline fun buildCoefficients(@BuilderInference builderAction: MutableMap<Map<Variable, UInt>, C>.() -> Unit): Map<Map<Variable, UInt>, C> {
|
||||
contract { callsInPlace(builderAction, InvocationKind.EXACTLY_ONCE) }
|
||||
return buildMap {
|
||||
builderAction()
|
||||
for ((degs, c) in this) if (c.isZero()) this.remove(degs)
|
||||
}
|
||||
}
|
||||
@OptIn(ExperimentalTypeInference::class)
|
||||
internal inline fun buildCoefficients(capacity: Int, @BuilderInference builderAction: MutableMap<Map<Variable, UInt>, C>.() -> Unit): Map<Map<Variable, UInt>, C> {
|
||||
contract { callsInPlace(builderAction, InvocationKind.EXACTLY_ONCE) }
|
||||
return buildMap(capacity) {
|
||||
builderAction()
|
||||
for ((degs, c) in this) if (c.isZero()) this.remove(degs)
|
||||
}
|
||||
}
|
||||
// endregion
|
||||
}
|
||||
@ -13,7 +13,7 @@ import kotlin.math.max
|
||||
*
|
||||
* @param C the type of constants.
|
||||
*/
|
||||
public class NumberedPolynomial<C>
|
||||
public data class NumberedPolynomial<C>
|
||||
internal constructor(
|
||||
/**
|
||||
* Map that collects coefficients of the polynomial. Every monomial `a x_1^{d_1} ... x_n^{d_n}` is represented as
|
||||
@ -259,27 +259,9 @@ public fun <C, A: Ring<C>> C.asNumberedPolynomial() : NumberedPolynomial<C> = Nu
|
||||
* @param ring the [A] instance.
|
||||
*/
|
||||
@Suppress("PARAMETER_NAME_CHANGED_ON_OVERRIDE", "INAPPLICABLE_JVM_NAME")
|
||||
public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
public val ring: A,
|
||||
) : AbstractPolynomialSpace<C, NumberedPolynomial<C>> {
|
||||
// region Constant-integer relation
|
||||
@JvmName("constantIntPlus")
|
||||
public override operator fun C.plus(other: Int): C = ring { optimizedAddMultiplied(this@plus, one, other) }
|
||||
@JvmName("constantIntMinus")
|
||||
public override operator fun C.minus(other: Int): C = ring { optimizedAddMultiplied(this@minus, one, -other) }
|
||||
@JvmName("constantIntTimes")
|
||||
public override operator fun C.times(other: Int): C = ring { optimizedMultiply(this@times, other) }
|
||||
// endregion
|
||||
|
||||
// region Integer-constant relation
|
||||
@JvmName("intConstantPlus")
|
||||
public override operator fun Int.plus(other: C): C = ring { optimizedAddMultiplied(other, one, this@plus) }
|
||||
@JvmName("intConstantMinus")
|
||||
public override operator fun Int.minus(other: C): C = ring { optimizedAddMultiplied(-other, one, this@minus) }
|
||||
@JvmName("intConstantTimes")
|
||||
public override operator fun Int.times(other: C): C = ring { optimizedMultiply(other, this@times) }
|
||||
// endregion
|
||||
|
||||
public open class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
public final override val ring: A,
|
||||
) : AbstractPolynomialSpaceOverRing<C, NumberedPolynomial<C>, A> {
|
||||
// region Polynomial-integer relation
|
||||
public override operator fun NumberedPolynomial<C>.plus(other: Int): NumberedPolynomial<C> =
|
||||
if (other == 0) this
|
||||
@ -362,29 +344,6 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
)
|
||||
// endregion
|
||||
|
||||
// region Constant-constant relation
|
||||
@JvmName("constantUnaryMinus")
|
||||
override operator fun C.unaryMinus(): C = ring { -this@unaryMinus }
|
||||
@JvmName("constantPlus")
|
||||
override operator fun C.plus(other: C): C = ring { this@plus + other }
|
||||
@JvmName("constantMinus")
|
||||
override operator fun C.minus(other: C): C = ring { this@minus - other }
|
||||
@JvmName("constantTimes")
|
||||
override operator fun C.times(other: C): C = ring { this@times * other }
|
||||
@JvmName("constantIsZero")
|
||||
public override fun C.isZero(): Boolean = ring { this == zero }
|
||||
@JvmName("constantIsNotZero")
|
||||
public override fun C.isNotZero(): Boolean = ring { this != zero }
|
||||
@JvmName("constantIsOne")
|
||||
public override fun C.isOne(): Boolean = ring { this == one }
|
||||
@JvmName("constantIsNotOne")
|
||||
public override fun C.isNotOne(): Boolean = ring { this != one }
|
||||
@JvmName("constantIsMinusOne")
|
||||
public override fun C.isMinusOne(): Boolean = ring { this == -one }
|
||||
@JvmName("constantIsNotMinusOne")
|
||||
public override fun C.isNotMinusOne(): Boolean = ring { this != -one }
|
||||
// endregion
|
||||
|
||||
// region Constant-polynomial relation
|
||||
override operator fun C.plus(other: NumberedPolynomial<C>): NumberedPolynomial<C> =
|
||||
if (this.isZero()) other
|
||||
@ -521,7 +480,7 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
other.isZero() -> zero
|
||||
else ->
|
||||
NumberedPolynomial<C>(
|
||||
buildCoefficients {
|
||||
buildCoefficients(coefficients.size * other.coefficients.size) {
|
||||
for ((degs1, c1) in coefficients) for ((degs2, c2) in other.coefficients) {
|
||||
val degs =
|
||||
(0..max(degs1.lastIndex, degs2.lastIndex))
|
||||
@ -534,7 +493,6 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
}
|
||||
|
||||
public override fun NumberedPolynomial<C>.isZero(): Boolean = coefficients.values.all { it.isZero() }
|
||||
public override fun NumberedPolynomial<C>.isNotZero(): Boolean = coefficients.values.any { it.isNotZero() }
|
||||
public override fun NumberedPolynomial<C>.isOne(): Boolean =
|
||||
with(coefficients) {
|
||||
var foundAbsoluteTermAndItIsOne = false
|
||||
@ -547,7 +505,6 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
}
|
||||
foundAbsoluteTermAndItIsOne
|
||||
}
|
||||
public override fun NumberedPolynomial<C>.isNotOne(): Boolean = !isOne()
|
||||
public override fun NumberedPolynomial<C>.isMinusOne(): Boolean =
|
||||
with(coefficients) {
|
||||
var foundAbsoluteTermAndItIsMinusOne = false
|
||||
@ -560,7 +517,6 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
}
|
||||
foundAbsoluteTermAndItIsMinusOne
|
||||
}
|
||||
public override fun NumberedPolynomial<C>.isNotMinusOne(): Boolean = !isMinusOne()
|
||||
|
||||
override val zero: NumberedPolynomial<C> = NumberedPolynomial<C>(emptyMap())
|
||||
override val one: NumberedPolynomial<C> =
|
||||
@ -572,7 +528,7 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
|
||||
// TODO: Docs
|
||||
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
|
||||
override fun NumberedPolynomial<C>.equals(other: NumberedPolynomial<C>): Boolean =
|
||||
override infix fun NumberedPolynomial<C>.equalsTo(other: NumberedPolynomial<C>): Boolean =
|
||||
when {
|
||||
this === other -> true
|
||||
else -> coefficients.size == other.coefficients.size &&
|
||||
@ -658,15 +614,9 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
public inline operator fun NumberedPolynomial<C>.invoke(argument: Map<Int, NumberedPolynomial<C>>): NumberedPolynomial<C> = this.substitute(ring, argument)
|
||||
// endregion
|
||||
|
||||
// region Legacy
|
||||
@Suppress("OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
|
||||
override inline fun add(left: NumberedPolynomial<C>, right: NumberedPolynomial<C>): NumberedPolynomial<C> = left + right
|
||||
@Suppress("OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
|
||||
override inline fun multiply(left: NumberedPolynomial<C>, right: NumberedPolynomial<C>): NumberedPolynomial<C> = left * right
|
||||
// endregion
|
||||
|
||||
// region Utilities
|
||||
// TODO: Move to region internal utilities with context receiver
|
||||
@JvmName("applyAndRemoveZerosInternal")
|
||||
internal fun MutableMap<List<UInt>, C>.applyAndRemoveZeros(block: MutableMap<List<UInt>, C>.() -> Unit) : MutableMap<List<UInt>, C> {
|
||||
contract {
|
||||
callsInPlace(block, InvocationKind.EXACTLY_ONCE)
|
||||
@ -678,12 +628,20 @@ public class NumberedPolynomialSpace<C, A : Ring<C>>(
|
||||
internal fun Map<List<UInt>, C>.applyAndRemoveZeros(block: MutableMap<List<UInt>, C>.() -> Unit) : Map<List<UInt>, C> =
|
||||
toMutableMap().applyAndRemoveZeros(block)
|
||||
@OptIn(ExperimentalTypeInference::class)
|
||||
internal fun buildCoefficients(@BuilderInference builderAction: MutableMap<List<UInt>, C>.() -> Unit): Map<List<UInt>, C> {
|
||||
internal inline fun buildCoefficients(@BuilderInference builderAction: MutableMap<List<UInt>, C>.() -> Unit): Map<List<UInt>, C> {
|
||||
contract { callsInPlace(builderAction, InvocationKind.EXACTLY_ONCE) }
|
||||
return buildMap {
|
||||
builderAction()
|
||||
for ((degs, c) in this) if (c.isZero()) this.remove(degs)
|
||||
}
|
||||
}
|
||||
@OptIn(ExperimentalTypeInference::class)
|
||||
internal inline fun buildCoefficients(capacity: Int, @BuilderInference builderAction: MutableMap<List<UInt>, C>.() -> Unit): Map<List<UInt>, C> {
|
||||
contract { callsInPlace(builderAction, InvocationKind.EXACTLY_ONCE) }
|
||||
return buildMap(capacity) {
|
||||
builderAction()
|
||||
for ((degs, c) in this) if (c.isZero()) this.remove(degs)
|
||||
}
|
||||
}
|
||||
// endregion
|
||||
}
|
||||
@ -15,7 +15,7 @@ import kotlin.math.min
|
||||
*
|
||||
* @param coefficients constant is the leftmost coefficient.
|
||||
*/
|
||||
public class Polynomial<T>(public val coefficients: List<T>) : AbstractPolynomial<T> {
|
||||
public data class Polynomial<T>(public val coefficients: List<T>) : AbstractPolynomial<T> {
|
||||
override fun toString(): String = "Polynomial$coefficients"
|
||||
}
|
||||
|
||||
@ -69,25 +69,8 @@ public fun <T> T.asPolynomial() : Polynomial<T> = Polynomial(listOf(this))
|
||||
*/
|
||||
@Suppress("INAPPLICABLE_JVM_NAME") // TODO: KT-31420
|
||||
public open class PolynomialSpace<C, A : Ring<C>>(
|
||||
public val ring: A,
|
||||
) : AbstractPolynomialSpace<C, Polynomial<C>> {
|
||||
// region Constant-integer relation
|
||||
@JvmName("constantIntPlus")
|
||||
public override operator fun C.plus(other: Int): C = ring { optimizedAddMultiplied(this@plus, one, other) }
|
||||
@JvmName("constantIntMinus")
|
||||
public override operator fun C.minus(other: Int): C = ring { optimizedAddMultiplied(this@minus, one, -other) }
|
||||
@JvmName("constantIntTimes")
|
||||
public override operator fun C.times(other: Int): C = ring { optimizedMultiply(this@times, other) }
|
||||
// endregion
|
||||
|
||||
// region Integer-constant relation
|
||||
@JvmName("intConstantPlus")
|
||||
public override operator fun Int.plus(other: C): C = ring { optimizedAddMultiplied(other, one, this@plus) }
|
||||
@JvmName("intConstantMinus")
|
||||
public override operator fun Int.minus(other: C): C = ring { optimizedAddMultiplied(-other, one, this@minus) }
|
||||
@JvmName("intConstantTimes")
|
||||
public override operator fun Int.times(other: C): C = ring { optimizedMultiply(other, this@times) }
|
||||
// endregion
|
||||
public final override val ring: A,
|
||||
) : AbstractPolynomialSpaceOverRing<C, Polynomial<C>, A> {
|
||||
|
||||
// region Polynomial-integer relation
|
||||
public override operator fun Polynomial<C>.plus(other: Int): Polynomial<C> =
|
||||
@ -179,29 +162,6 @@ public open class PolynomialSpace<C, A : Ring<C>>(
|
||||
)
|
||||
// endregion
|
||||
|
||||
// region Constant-constant relation
|
||||
@JvmName("constantUnaryMinus")
|
||||
public override operator fun C.unaryMinus(): C = ring { -this@unaryMinus }
|
||||
@JvmName("constantPlus")
|
||||
public override operator fun C.plus(other: C): C = ring { this@plus + other }
|
||||
@JvmName("constantMinus")
|
||||
public override operator fun C.minus(other: C): C = ring { this@minus - other }
|
||||
@JvmName("constantTimes")
|
||||
public override operator fun C.times(other: C): C = ring { this@times * other }
|
||||
@JvmName("constantIsZero")
|
||||
public override fun C.isZero(): Boolean = ring { this == zero }
|
||||
@JvmName("constantIsNotZero")
|
||||
public override fun C.isNotZero(): Boolean = ring { this != zero }
|
||||
@JvmName("constantIsOne")
|
||||
public override fun C.isOne(): Boolean = ring { this == one }
|
||||
@JvmName("constantIsNotOne")
|
||||
public override fun C.isNotOne(): Boolean = ring { this != one }
|
||||
@JvmName("constantIsMinusOne")
|
||||
public override fun C.isMinusOne(): Boolean = ring { this == -one }
|
||||
@JvmName("constantIsNotMinusOne")
|
||||
public override fun C.isNotMinusOne(): Boolean = ring { this != -one }
|
||||
// endregion
|
||||
|
||||
// region Constant-polynomial relation
|
||||
public override operator fun C.plus(other: Polynomial<C>): Polynomial<C> =
|
||||
if (this.isZero()) other
|
||||
@ -355,19 +315,16 @@ public open class PolynomialSpace<C, A : Ring<C>>(
|
||||
}
|
||||
|
||||
public override fun Polynomial<C>.isZero(): Boolean = coefficients.all { it.isZero() }
|
||||
public override fun Polynomial<C>.isNotZero(): Boolean = coefficients.any { it.isNotZero() }
|
||||
public override fun Polynomial<C>.isOne(): Boolean =
|
||||
with(coefficients) { isNotEmpty() && asSequence().withIndex().any { (index, c) -> if (index == 0) c.isOne() else c.isZero() } } // TODO: It's better to write new methods like `anyIndexed`. But what's better way to do it?
|
||||
public override fun Polynomial<C>.isNotOne(): Boolean = !isOne()
|
||||
public override fun Polynomial<C>.isMinusOne(): Boolean =
|
||||
with(coefficients) { isNotEmpty() && asSequence().withIndex().any { (index, c) -> if (index == 0) c.isMinusOne() else c.isZero() } } // TODO: It's better to write new methods like `anyIndexed`. But what's better way to do it?
|
||||
public override fun Polynomial<C>.isNotMinusOne(): Boolean = !isMinusOne()
|
||||
|
||||
override val zero: Polynomial<C> = Polynomial(emptyList())
|
||||
override val one: Polynomial<C> = Polynomial(listOf(ring.one))
|
||||
|
||||
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
|
||||
public override fun Polynomial<C>.equals(other: Polynomial<C>): Boolean =
|
||||
public override infix fun Polynomial<C>.equalsTo(other: Polynomial<C>): Boolean =
|
||||
when {
|
||||
this === other -> true
|
||||
else -> {
|
||||
|
||||
@ -0,0 +1,355 @@
|
||||
package space.kscience.kmath.functions
|
||||
|
||||
import space.kscience.kmath.operations.*
|
||||
import kotlin.jvm.JvmName
|
||||
import kotlin.math.max
|
||||
import kotlin.math.min
|
||||
|
||||
|
||||
public data class RationalFunction<C> internal constructor (
|
||||
public override val numerator: Polynomial<C>,
|
||||
public override val denominator: Polynomial<C>
|
||||
) : AbstractRationalFunction<C, Polynomial<C>> {
|
||||
override fun toString(): String = "RationalFunction${numerator.coefficients}/${denominator.coefficients}"
|
||||
}
|
||||
|
||||
// region Internal utilities
|
||||
|
||||
/**
|
||||
* Represents internal [RationalFunction] errors.
|
||||
*/
|
||||
internal class RationalFunctionError : Error {
|
||||
constructor(): super()
|
||||
constructor(message: String): super(message)
|
||||
constructor(message: String?, cause: Throwable?): super(message, cause)
|
||||
constructor(cause: Throwable?): super(cause)
|
||||
}
|
||||
|
||||
/**
|
||||
* Throws an [RationalFunction] with the given [message].
|
||||
*/
|
||||
internal fun rationalFunctionError(message: Any): Nothing = throw RationalFunctionError(message.toString())
|
||||
|
||||
// endregion
|
||||
|
||||
// region Constructors and converters
|
||||
// Waiting for context receivers :( TODO: Replace with context receivers when they will be available
|
||||
|
||||
//context(RationalFunctionSpace<C, A>)
|
||||
//@Suppress("FunctionName")
|
||||
//internal fun <C, A: Ring<C>> RationalFunction(numerator: Polynomial<C>, denominator: Polynomial<C>): RationalFunction<C> =
|
||||
// if (denominator.isZero()) throw ArithmeticException("/ by zero")
|
||||
// else RationalFunction<C>(numerator, denominator)
|
||||
//context(RationalFunctionSpace<C, A>)
|
||||
//@Suppress("FunctionName")
|
||||
//public fun <C, A: Ring<C>> RationalFunction(numeratorCoefficients: List<C>, denominatorCoefficients: List<C>, reverse: Boolean = false): RationalFunction<C> =
|
||||
// RationalFunction<C>(
|
||||
// Polynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } ),
|
||||
// Polynomial( with(denominatorCoefficients) { if (reverse) reversed() else this } ).also { if (it.isZero()) }
|
||||
// )
|
||||
//context(RationalFunctionSpace<C, A>)
|
||||
//@Suppress("FunctionName")
|
||||
//public fun <C, A: Ring<C>> RationalFunction(numerator: Polynomial<C>): RationalFunction<C> =
|
||||
// RationalFunction(numerator, onePolynomial)
|
||||
//context(RationalFunctionSpace<C, A>)
|
||||
//@Suppress("FunctionName")
|
||||
//public fun <C, A: Ring<C>> RationalFunction(numeratorCoefficients: List<C>, reverse: Boolean = false): RationalFunction<C> =
|
||||
// RationalFunction(
|
||||
// Polynomial( with(numeratorCoefficients) { if (reverse) reversed() else this } )
|
||||
// )
|
||||
|
||||
// endregion
|
||||
|
||||
public class RationalFunctionSpace<C, A : Ring<C>> (
|
||||
public val ring: A,
|
||||
) : AbstractRationalFunctionalSpaceOverPolynomialSpace<C, Polynomial<C>, RationalFunction<C>, A> {
|
||||
|
||||
override val polynomialRing : PolynomialSpace<C, A> = PolynomialSpace(ring)
|
||||
|
||||
// region Rational-integer relation
|
||||
/**
|
||||
* Returns sum of the rational function and the integer represented as rational function.
|
||||
*
|
||||
* The operation is equivalent to adding [other] copies of unit polynomial to [this].
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.plus(other: Int): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator + denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns difference between the rational function and the integer represented as rational function.
|
||||
*
|
||||
* The operation is equivalent to subtraction [other] copies of unit polynomial from [this].
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.minus(other: Int): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator - denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns product of the rational function and the integer represented as rational function.
|
||||
*
|
||||
* The operation is equivalent to sum of [other] copies of [this].
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.times(other: Int): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other,
|
||||
denominator
|
||||
)
|
||||
// endregion
|
||||
|
||||
// region Integer-Rational relation
|
||||
/**
|
||||
* Returns sum of the integer represented as rational function and the rational function.
|
||||
*
|
||||
* The operation is equivalent to adding [this] copies of unit polynomial to [other].
|
||||
*/
|
||||
public override operator fun Int.plus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns difference between the integer represented as rational function and the rational function.
|
||||
*
|
||||
* The operation is equivalent to subtraction [this] copies of unit polynomial from [other].
|
||||
*/
|
||||
public override operator fun Int.minus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns product of the integer represented as rational function and the rational function.
|
||||
*
|
||||
* The operation is equivalent to sum of [this] copies of [other].
|
||||
*/
|
||||
public override operator fun Int.times(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
// endregion
|
||||
|
||||
// region Constant-rational relation
|
||||
/**
|
||||
* Returns sum of the constant represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun C.plus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns difference between the constant represented as polynomial and the rational function.
|
||||
*/
|
||||
public override operator fun C.minus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns product of the constant represented as polynomial and the rational function.
|
||||
*/
|
||||
public override operator fun C.times(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
// endregion
|
||||
|
||||
// region Rational-constant relation
|
||||
/**
|
||||
* Returns sum of the constant represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.plus(other: C): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator + denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns difference between the constant represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.minus(other: C): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator - denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns product of the constant represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.times(other: C): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other,
|
||||
denominator
|
||||
)
|
||||
// endregion
|
||||
|
||||
// region Polynomial-rational relation
|
||||
/**
|
||||
* Returns sum of the polynomial represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun Polynomial<C>.plus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns difference between the polynomial represented as polynomial and the rational function.
|
||||
*/
|
||||
public override operator fun Polynomial<C>.minus(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
/**
|
||||
* Returns product of the polynomial represented as polynomial and the rational function.
|
||||
*/
|
||||
public override operator fun Polynomial<C>.times(other: RationalFunction<C>): RationalFunction<C> = TODO()
|
||||
// endregion
|
||||
|
||||
// region Rational-polynomial relation
|
||||
/**
|
||||
* Returns sum of the polynomial represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.plus(other: Polynomial<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator + denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns difference between the polynomial represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.minus(other: Polynomial<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator - denominator * other,
|
||||
denominator
|
||||
)
|
||||
/**
|
||||
* Returns product of the polynomial represented as rational function and the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.times(other: Polynomial<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other,
|
||||
denominator
|
||||
)
|
||||
// endregion
|
||||
|
||||
// region Rational-rational relation
|
||||
/**
|
||||
* Returns negation of the rational function.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.unaryMinus(): RationalFunction<C> = RationalFunction(-numerator, denominator)
|
||||
/**
|
||||
* Returns sum of the rational functions.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.plus(other: RationalFunction<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other.denominator + denominator * other.numerator,
|
||||
denominator * other.denominator
|
||||
)
|
||||
/**
|
||||
* Returns difference of the rational functions.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.minus(other: RationalFunction<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other.denominator - denominator * other.numerator,
|
||||
denominator * other.denominator
|
||||
)
|
||||
/**
|
||||
* Returns product of the rational functions.
|
||||
*/
|
||||
public override operator fun RationalFunction<C>.times(other: RationalFunction<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other.numerator,
|
||||
denominator * other.denominator
|
||||
)
|
||||
|
||||
/**
|
||||
* Check if the instant is zero rational function.
|
||||
*/
|
||||
public override fun RationalFunction<C>.isZero(): Boolean = numerator.isZero()
|
||||
/**
|
||||
* Check if the instant is unit rational function.
|
||||
*/
|
||||
public override fun RationalFunction<C>.isOne(): Boolean = numerator.equalsTo(denominator)
|
||||
/**
|
||||
* Check if the instant is minus unit rational function.
|
||||
*/
|
||||
public override fun RationalFunction<C>.isMinusOne(): Boolean = (numerator + denominator).isZero()
|
||||
|
||||
/**
|
||||
* Instance of zero rational function (zero of the rational functions ring).
|
||||
*/
|
||||
public override val zero: RationalFunction<C> = RationalFunction(polynomialZero, polynomialOne)
|
||||
/**
|
||||
* Instance of unit polynomial (unit of the rational functions ring).
|
||||
*/
|
||||
public override val one: RationalFunction<C> = RationalFunction(polynomialOne, polynomialOne)
|
||||
|
||||
/**
|
||||
* Checks equality of the rational functions.
|
||||
*/
|
||||
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "CovariantEquals")
|
||||
public override infix fun RationalFunction<C>.equalsTo(other: RationalFunction<C>): Boolean =
|
||||
when {
|
||||
this === other -> true
|
||||
numeratorDegree - denominatorDegree != with(other) { numeratorDegree - denominatorDegree } -> false
|
||||
else -> numerator * other.denominator equalsTo other.numerator * denominator
|
||||
}
|
||||
// endregion
|
||||
|
||||
// region REST TODO: Разобрать
|
||||
|
||||
public operator fun RationalFunction<C>.div(other: RationalFunction<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator * other.denominator,
|
||||
denominator * other.numerator
|
||||
)
|
||||
|
||||
public operator fun RationalFunction<C>.div(other: Polynomial<C>): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator,
|
||||
denominator * other
|
||||
)
|
||||
|
||||
public operator fun RationalFunction<C>.div(other: C): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator,
|
||||
denominator * other
|
||||
)
|
||||
|
||||
public operator fun RationalFunction<C>.div(other: Int): RationalFunction<C> =
|
||||
RationalFunction(
|
||||
numerator,
|
||||
denominator * other
|
||||
)
|
||||
|
||||
// operator fun invoke(arg: UnivariatePolynomial<T>): RationalFunction<T> =
|
||||
// RationalFunction(
|
||||
// numerator(arg),
|
||||
// denominator(arg)
|
||||
// )
|
||||
//
|
||||
// operator fun invoke(arg: RationalFunction<T>): RationalFunction<T> {
|
||||
// val num = numerator invokeRFTakeNumerator arg
|
||||
// val den = denominator invokeRFTakeNumerator arg
|
||||
// val degreeDif = numeratorDegree - denominatorDegree
|
||||
// return if (degreeDif > 0)
|
||||
// RationalFunction(
|
||||
// num,
|
||||
// multiplyByPower(den, arg.denominator, degreeDif)
|
||||
// )
|
||||
// else
|
||||
// RationalFunction(
|
||||
// multiplyByPower(num, arg.denominator, -degreeDif),
|
||||
// den
|
||||
// )
|
||||
// }
|
||||
//
|
||||
// override fun toString(): String = toString(UnivariatePolynomial.variableName)
|
||||
//
|
||||
// fun toString(withVariableName: String = UnivariatePolynomial.variableName): String =
|
||||
// when(true) {
|
||||
// numerator.isZero() -> "0"
|
||||
// denominator.isOne() -> numerator.toString(withVariableName)
|
||||
// else -> "${numerator.toStringWithBrackets(withVariableName)}/${denominator.toStringWithBrackets(withVariableName)}"
|
||||
// }
|
||||
//
|
||||
// fun toStringWithBrackets(withVariableName: String = UnivariatePolynomial.variableName): String =
|
||||
// when(true) {
|
||||
// numerator.isZero() -> "0"
|
||||
// denominator.isOne() -> numerator.toStringWithBrackets(withVariableName)
|
||||
// else -> "(${numerator.toStringWithBrackets(withVariableName)}/${denominator.toStringWithBrackets(withVariableName)})"
|
||||
// }
|
||||
//
|
||||
// fun toReversedString(withVariableName: String = UnivariatePolynomial.variableName): String =
|
||||
// when(true) {
|
||||
// numerator.isZero() -> "0"
|
||||
// denominator.isOne() -> numerator.toReversedString(withVariableName)
|
||||
// else -> "${numerator.toReversedStringWithBrackets(withVariableName)}/${denominator.toReversedStringWithBrackets(withVariableName)}"
|
||||
// }
|
||||
//
|
||||
// fun toReversedStringWithBrackets(withVariableName: String = UnivariatePolynomial.variableName): String =
|
||||
// when(true) {
|
||||
// numerator.isZero() -> "0"
|
||||
// denominator.isOne() -> numerator.toReversedStringWithBrackets(withVariableName)
|
||||
// else -> "(${numerator.toReversedStringWithBrackets(withVariableName)}/${denominator.toReversedStringWithBrackets(withVariableName)})"
|
||||
// }
|
||||
//
|
||||
// fun removeZeros() =
|
||||
// RationalFunction(
|
||||
// numerator.removeZeros(),
|
||||
// denominator.removeZeros()
|
||||
// )
|
||||
// endregion
|
||||
}
|
||||
@ -0,0 +1,34 @@
|
||||
package space.kscience.kmath.functions
|
||||
|
||||
|
||||
// region Operator extensions
|
||||
|
||||
// region Field case
|
||||
|
||||
//operator fun <T: Field<T>> RationalFunction<T>.invoke(arg: T): T = numerator(arg) / denominator(arg)
|
||||
//
|
||||
//fun <T: Field<T>> RationalFunction<T>.reduced(): RationalFunction<T> =
|
||||
// polynomialGCD(numerator, denominator).let {
|
||||
// RationalFunction(
|
||||
// numerator / it,
|
||||
// denominator / it
|
||||
// )
|
||||
// }
|
||||
|
||||
// endregion
|
||||
|
||||
// endregion
|
||||
|
||||
// region Derivatives
|
||||
///**
|
||||
// * Returns result of applying formal derivative to the polynomial.
|
||||
// *
|
||||
// * @param T Field where we are working now.
|
||||
// * @return Result of the operator.
|
||||
// */
|
||||
//fun <T: Ring<T>> RationalFunction<T>.derivative() =
|
||||
// RationalFunction(
|
||||
// numerator.derivative() * denominator - denominator.derivative() * numerator,
|
||||
// denominator * denominator
|
||||
// )
|
||||
// endregion
|
||||
Loading…
Reference in New Issue
Block a user