forked from kscience/kmath
Fixed bug in implementations of polynomial operations
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@ -211,7 +211,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
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else LabeledPolynomial(
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coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> c * other }
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for (degs in keys) this[degs] = this[degs]!! * other
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}
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)
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@ -265,7 +265,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
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else LabeledPolynomial(
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other.coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> this@times * c }
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for (degs in keys) this[degs] = this@times * this[degs]!!
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}
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)
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@ -361,7 +361,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
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else LabeledPolynomial<C>(
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other.coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> this@times * c }
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for (degs in keys) this[degs] = this@times * this[degs]!!
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}
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)
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@ -413,7 +413,7 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
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else LabeledPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> c * other }
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for (degs in keys) this[degs] = this[degs]!! * other
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}
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)
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@ -525,22 +525,20 @@ public class LabeledPolynomialSpace<C, A : Ring<C>>(
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*/
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override operator fun LabeledPolynomial<C>.plus(other: LabeledPolynomial<C>): LabeledPolynomial<C> =
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LabeledPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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other.coefficients
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.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! + value else value }
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}
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buildCoefficients(coefficients.size + other.coefficients.size) {
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other.coefficients.mapValuesTo(this) { it.value }
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other.coefficients.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! + value else value }
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}
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)
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/**
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* Returns difference of the polynomials.
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*/
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override operator fun LabeledPolynomial<C>.minus(other: LabeledPolynomial<C>): LabeledPolynomial<C> =
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LabeledPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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other.coefficients
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.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! - value else -value }
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}
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buildCoefficients(coefficients.size + other.coefficients.size) {
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other.coefficients.mapValuesTo(this) { it.value }
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other.coefficients.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! - value else -value }
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}
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)
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/**
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* Returns product of the polynomials.
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@ -163,7 +163,7 @@ public open class NumberedPolynomialSpace<C, A : Ring<C>>(
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else NumberedPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> c * other }
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for (degs in keys) this[degs] = this[degs]!! * other
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}
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)
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@ -217,7 +217,7 @@ public open class NumberedPolynomialSpace<C, A : Ring<C>>(
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else NumberedPolynomial(
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other.coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> this@times * c }
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for (degs in keys) this[degs] = this@times * this[degs]!!
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}
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)
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@ -269,7 +269,7 @@ public open class NumberedPolynomialSpace<C, A : Ring<C>>(
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else NumberedPolynomial<C>(
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other.coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> this@times * c }
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for (degs in keys) this[degs] = this@times * this[degs]!!
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}
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)
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@ -319,7 +319,7 @@ public open class NumberedPolynomialSpace<C, A : Ring<C>>(
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else NumberedPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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mapValues { (_, c) -> c * other }
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for (degs in keys) this[degs] = this[degs]!! * other
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}
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)
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@ -335,22 +335,20 @@ public open class NumberedPolynomialSpace<C, A : Ring<C>>(
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*/
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override operator fun NumberedPolynomial<C>.plus(other: NumberedPolynomial<C>): NumberedPolynomial<C> =
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NumberedPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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other.coefficients
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.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! + value else value }
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}
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buildCoefficients(coefficients.size + other.coefficients.size) {
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other.coefficients.mapValuesTo(this) { it.value }
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other.coefficients.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! + value else value }
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}
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)
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/**
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* Returns difference of the polynomials.
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*/
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override operator fun NumberedPolynomial<C>.minus(other: NumberedPolynomial<C>): NumberedPolynomial<C> =
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NumberedPolynomial<C>(
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coefficients
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.applyAndRemoveZeros {
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other.coefficients
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.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! - value else -value }
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}
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buildCoefficients(coefficients.size + other.coefficients.size) {
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other.coefficients.mapValuesTo(this) { it.value }
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other.coefficients.mapValuesTo(this) { (key, value) -> if (key in this) this[key]!! - value else -value }
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}
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)
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/**
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* Returns product of the polynomials.
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@ -129,7 +129,7 @@ public open class PolynomialSpace<C, A : Ring<C>>(
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else Polynomial(
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coefficients
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.applyAndRemoveZeros {
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map { it * other }
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for (deg in indices) this[deg] = this[deg] * other
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}
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)
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@ -189,7 +189,7 @@ public open class PolynomialSpace<C, A : Ring<C>>(
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else Polynomial(
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other.coefficients
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.applyAndRemoveZeros {
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map { it * this@times }
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for (deg in indices) this[deg] = this@times * this[deg]
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}
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)
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@ -245,7 +245,7 @@ public open class PolynomialSpace<C, A : Ring<C>>(
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else Polynomial(
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other.coefficients
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.applyAndRemoveZeros {
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map { it * this@times }
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for (deg in indices) this[deg] = this@times * this[deg]
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}
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)
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@ -299,7 +299,7 @@ public open class PolynomialSpace<C, A : Ring<C>>(
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else Polynomial(
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coefficients
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.applyAndRemoveZeros {
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map { it * other }
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for (deg in indices) this[deg] = this[deg] * other
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}
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)
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@ -452,12 +452,14 @@ public open class PolynomialSpace<C, A : Ring<C>>(
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}
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internal inline fun List<C>.applyAndRemoveZeros(block: MutableList<C>.() -> Unit) : List<C> =
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toMutableList().applyAndRemoveZeros(block)
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@Suppress("FunctionName")
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internal inline fun MutableCoefficients(size: Int, init: (index: Int) -> C): MutableList<C> {
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val list = ArrayList<C>(size)
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repeat(size) { index -> list.add(init(index)) }
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with(list) { while (elementAt(lastIndex).isZero()) removeAt(lastIndex) }
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return list
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}
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@Suppress("FunctionName")
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internal inline fun Coefficients(size: Int, init: (index: Int) -> C): List<C> = MutableCoefficients(size, init)
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@OptIn(ExperimentalTypeInference::class)
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internal inline fun buildCoefficients(@BuilderInference builderAction: MutableList<C>.() -> Unit): List<C> {
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@ -96,7 +96,6 @@ internal inline fun <C> multiplyAddingTo(
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target[d] += multiplicand[k] * multiplier[d - k]
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}
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// TODO: May be apply Horner's method too?
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/**
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* Evaluates the value of the given double polynomial for given double argument.
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*/
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