diff --git a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/Interpolator.kt b/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/Interpolator.kt deleted file mode 100644 index 62819be0c..000000000 --- a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/Interpolator.kt +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -@file:OptIn(UnstableKMathAPI::class) - -package space.kscience.kmath.interpolation - -import space.kscience.kmath.data.XYColumnarData -import space.kscience.kmath.functions.PiecewisePolynomial -import space.kscience.kmath.functions.asFunction -import space.kscience.kmath.functions.substitute -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.Ring -import space.kscience.kmath.structures.Buffer -import space.kscience.kmath.structures.asBuffer - -/** - * And interpolator for data with x column type [X], y column type [Y]. - */ -public fun interface Interpolator { - public fun interpolate(points: XYColumnarData): (X) -> Y -} - -/** - * And interpolator returning [PiecewisePolynomial] function - */ -public interface PolynomialInterpolator> : Interpolator { - public val algebra: Ring - - public fun getDefaultValue(): T = error("Out of bounds") - - public fun interpolatePolynomials(points: XYColumnarData): PiecewisePolynomial - - override fun interpolate(points: XYColumnarData): (T) -> T = { x -> - interpolatePolynomials(points).substitute(algebra, x) ?: getDefaultValue() - } -} - - -public fun > PolynomialInterpolator.interpolatePolynomials( - x: Buffer, - y: Buffer, -): PiecewisePolynomial { - val pointSet = XYColumnarData.of(x, y) - return interpolatePolynomials(pointSet) -} - -public fun > PolynomialInterpolator.interpolatePolynomials( - data: Map, -): PiecewisePolynomial { - val pointSet = XYColumnarData.of(data.keys.toList().asBuffer(), data.values.toList().asBuffer()) - return interpolatePolynomials(pointSet) -} - -public fun > PolynomialInterpolator.interpolatePolynomials( - data: List>, -): PiecewisePolynomial { - val pointSet = XYColumnarData.of(data.map { it.first }.asBuffer(), data.map { it.second }.asBuffer()) - return interpolatePolynomials(pointSet) -} - -public fun > PolynomialInterpolator.interpolate( - x: Buffer, - y: Buffer, -): (T) -> T? = interpolatePolynomials(x, y).asFunction(algebra) - -public fun > PolynomialInterpolator.interpolate( - data: Map, -): (T) -> T? = interpolatePolynomials(data).asFunction(algebra) - -public fun > PolynomialInterpolator.interpolate( - data: List>, -): (T) -> T? = interpolatePolynomials(data).asFunction(algebra) - - -public fun > PolynomialInterpolator.interpolate( - x: Buffer, - y: Buffer, - defaultValue: T, -): (T) -> T = interpolatePolynomials(x, y).asFunction(algebra, defaultValue) - -public fun > PolynomialInterpolator.interpolate( - data: Map, - defaultValue: T, -): (T) -> T = interpolatePolynomials(data).asFunction(algebra, defaultValue) - -public fun > PolynomialInterpolator.interpolate( - data: List>, - defaultValue: T, -): (T) -> T = interpolatePolynomials(data).asFunction(algebra, defaultValue) \ No newline at end of file diff --git a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/LinearInterpolator.kt b/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/LinearInterpolator.kt deleted file mode 100644 index b55f16cf2..000000000 --- a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/LinearInterpolator.kt +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.interpolation - -import space.kscience.kmath.data.XYColumnarData -import space.kscience.kmath.functions.PiecewisePolynomial -import space.kscience.kmath.functions.ListPolynomial -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.Field -import space.kscience.kmath.operations.invoke - -@OptIn(UnstableKMathAPI::class) -internal fun > insureSorted(points: XYColumnarData<*, T, *>) { - for (i in 0 until points.size - 1) - require(points.x[i + 1] > points.x[i]) { "Input data is not sorted at index $i" } -} - -/** - * Reference JVM implementation: https://github.com/apache/commons-math/blob/master/src/main/java/org/apache/commons/math4/analysis/interpolation/LinearInterpolator.java - */ -public class LinearInterpolator>(override val algebra: Field) : PolynomialInterpolator { - - @OptIn(UnstableKMathAPI::class) - override fun interpolatePolynomials(points: XYColumnarData): PiecewisePolynomial = algebra { - require(points.size > 0) { "Point array should not be empty" } - insureSorted(points) - - PiecewisePolynomial(points.x[0]) { - for (i in 0 until points.size - 1) { - val slope = (points.y[i + 1] - points.y[i]) / (points.x[i + 1] - points.x[i]) - val const = points.y[i] - slope * points.x[i] - val polynomial = ListPolynomial(const, slope) - putRight(points.x[i + 1], polynomial) - } - } - } -} - -public val > Field.linearInterpolator: LinearInterpolator - get() = LinearInterpolator(this) diff --git a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/SplineInterpolator.kt b/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/SplineInterpolator.kt deleted file mode 100644 index 48c90ff23..000000000 --- a/kmath-functions/src/commonMain/kotlin/space/kscience/kmath/interpolation/SplineInterpolator.kt +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.interpolation - -import space.kscience.kmath.data.XYColumnarData -import space.kscience.kmath.functions.PiecewisePolynomial -import space.kscience.kmath.functions.ListPolynomial -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.DoubleField -import space.kscience.kmath.operations.Field -import space.kscience.kmath.operations.invoke -import space.kscience.kmath.structures.DoubleBuffer -import space.kscience.kmath.structures.MutableBufferFactory - -/** - * Generic spline interpolator. Not recommended for performance critical places, use platform-specific and type - * specific ones. - * - * Based on - * https://github.com/apache/commons-math/blob/eb57d6d457002a0bb5336d789a3381a24599affe/src/main/java/org/apache/commons/math4/analysis/interpolation/SplineInterpolator.java - */ -public class SplineInterpolator>( - override val algebra: Field, - public val bufferFactory: MutableBufferFactory, -) : PolynomialInterpolator { - //TODO possibly optimize zeroed buffers - - @OptIn(UnstableKMathAPI::class) - override fun interpolatePolynomials(points: XYColumnarData): PiecewisePolynomial = algebra { - require(points.size >= 3) { "Can't use spline interpolator with less than 3 points" } - insureSorted(points) - // Number of intervals. The number of data points is n + 1. - val n = points.size - 1 - // Differences between knot points - val h = bufferFactory(n) { i -> points.x[i + 1] - points.x[i] } - val mu = bufferFactory(n) { zero } - val z = bufferFactory(n + 1) { zero } - - for (i in 1 until n) { - val g = 2.0 * (points.x[i + 1] - points.x[i - 1]) - h[i - 1] * mu[i - 1] - mu[i] = h[i] / g - z[i] = - ((points.y[i + 1] * h[i - 1] - points.y[i] * (points.x[i + 1] - points.x[i - 1]) + points.y[i - 1] * h[i]) * 3.0 / - (h[i - 1] * h[i]) - h[i - 1] * z[i - 1]) / g - } - - // cubic spline coefficients -- b is linear, c quadratic, d is cubic (original y's are constants) - - PiecewisePolynomial(points.x[points.size - 1]) { - var cOld = zero - - for (j in n - 1 downTo 0) { - val c = z[j] - mu[j] * cOld - val a = points.y[j] - val b = (points.y[j + 1] - points.y[j]) / h[j] - h[j] * (cOld + 2.0 * c) / 3.0 - val d = (cOld - c) / (3.0 * h[j]) - val x0 = points.x[j] - val x02 = x0 * x0 - val x03 = x02 * x0 - //Shift coefficients to represent absolute polynomial instead of one with an offset - val polynomial = ListPolynomial( - a - b * x0 + c * x02 - d * x03, - b - 2 * c * x0 + 3 * d * x02, - c - 3 * d * x0, - d - ) - cOld = c - putLeft(x0, polynomial) - } - } - } -} - - -public fun > Field.splineInterpolator( - bufferFactory: MutableBufferFactory, -): SplineInterpolator = SplineInterpolator(this, bufferFactory) - -public val DoubleField.splineInterpolator: SplineInterpolator - get() = SplineInterpolator(this, ::DoubleBuffer) \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/SplineIntegralTest.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/SplineIntegralTest.kt deleted file mode 100644 index aae0ad017..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/integration/SplineIntegralTest.kt +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.integration - -import space.kscience.kmath.functions.ListPolynomial -import space.kscience.kmath.functions.integrate -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.DoubleField -import kotlin.math.PI -import kotlin.math.sin -import kotlin.test.Test -import kotlin.test.assertEquals - -@OptIn(UnstableKMathAPI::class) -class SplineIntegralTest { - - @Test - fun integratePolynomial(){ - val polynomial = ListPolynomial(1.0, 2.0, 3.0) - val integral = polynomial.integrate(DoubleField,1.0..2.0) - assertEquals(11.0, integral, 0.001) - } - - @Test - fun gaussSin() { - val res = DoubleField.splineIntegrator.integrate(0.0..2 * PI, IntegrandMaxCalls(5)) { x -> - sin(x) - } - assertEquals(0.0, res.value, 1e-2) - } - - @Test - fun gaussUniform() { - val res = DoubleField.splineIntegrator.integrate(35.0..100.0, IntegrandMaxCalls(20)) { x -> - if(x in 30.0..50.0){ - 1.0 - } else { - 0.0 - } - } - assertEquals(15.0, res.value, 0.5) - } - - -} \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/LinearInterpolatorTest.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/LinearInterpolatorTest.kt deleted file mode 100644 index 1143036d4..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/LinearInterpolatorTest.kt +++ /dev/null @@ -1,29 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.interpolation - -import space.kscience.kmath.operations.DoubleField -import kotlin.test.Test -import kotlin.test.assertEquals - -internal class LinearInterpolatorTest { - @Test - fun testInterpolation() { - val data = listOf( - 0.0 to 0.0, - 1.0 to 1.0, - 2.0 to 3.0, - 3.0 to 4.0 - ) - - //val polynomial: PiecewisePolynomial = DoubleField.linearInterpolator.interpolatePolynomials(data) - val function = DoubleField.linearInterpolator.interpolate(data) - assertEquals(null, function(-1.0)) - assertEquals(0.5, function(0.5)) - assertEquals(2.0, function(1.5)) - assertEquals(3.0, function(2.0)) - } -} diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/SplineInterpolatorTest.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/SplineInterpolatorTest.kt deleted file mode 100644 index 4c7d816d4..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/interpolation/SplineInterpolatorTest.kt +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.interpolation - -import space.kscience.kmath.operations.DoubleField -import kotlin.math.PI -import kotlin.math.sin -import kotlin.test.Test -import kotlin.test.assertEquals - -internal class SplineInterpolatorTest { - @Test - fun testInterpolation() { - val data = (0..10).map { - val x = it.toDouble() / 5 * PI - x to sin(x) - } - - //val polynomial: PiecewisePolynomial = DoubleField.splineInterpolator.interpolatePolynomials(data) - - val function = DoubleField.splineInterpolator.interpolate(data, Double.NaN) - - assertEquals(Double.NaN, function(-1.0)) - assertEquals(sin(0.5), function(0.5), 0.1) - assertEquals(sin(1.5), function(1.5), 0.1) - assertEquals(sin(2.0), function(2.0), 0.1) - } -} diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/IntModulo.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/IntModulo.kt deleted file mode 100644 index 2353beee6..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/IntModulo.kt +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.test.misc - -import space.kscience.kmath.functions.ListPolynomial -import space.kscience.kmath.functions.ListPolynomialSpace -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.Ring - - -class IntModulo { - val residue: Int - val modulus: Int - - @PublishedApi - internal constructor(residue: Int, modulus: Int, toCheckInput: Boolean = true) { - if (toCheckInput) { - require(modulus != 0) { "modulus can not be zero" } - this.modulus = if (modulus < 0) -modulus else modulus - this.residue = residue.mod(modulus) - } else { - this.residue = residue - this.modulus = modulus - } - } - - constructor(residue: Int, modulus: Int) : this(residue, modulus, true) - - operator fun unaryPlus(): IntModulo = this - operator fun unaryMinus(): IntModulo = - IntModulo( - if (residue == 0) 0 else modulus - residue, - modulus, - toCheckInput = false - ) - operator fun plus(other: IntModulo): IntModulo { - require(modulus == other.modulus) { "can not add two residue different modulo" } - return IntModulo( - (residue + other.residue) % modulus, - modulus, - toCheckInput = false - ) - } - operator fun plus(other: Int): IntModulo = - IntModulo( - (residue + other) % modulus, - modulus, - toCheckInput = false - ) - operator fun minus(other: IntModulo): IntModulo { - require(modulus == other.modulus) { "can not subtract two residue different modulo" } - return IntModulo( - (residue - other.residue) % modulus, - modulus, - toCheckInput = false - ) - } - operator fun minus(other: Int): IntModulo = - IntModulo( - (residue - other) % modulus, - modulus, - toCheckInput = false - ) - operator fun times(other: IntModulo): IntModulo { - require(modulus == other.modulus) { "can not multiply two residue different modulo" } - return IntModulo( - (residue * other.residue) % modulus, - modulus, - toCheckInput = false - ) - } - operator fun times(other: Int): IntModulo = - IntModulo( - (residue * other) % modulus, - modulus, - toCheckInput = false - ) - operator fun div(other: IntModulo): IntModulo { - require(modulus == other.modulus) { "can not divide two residue different modulo" } - val (reciprocalCandidate, gcdOfOtherResidueAndModulus) = bezoutIdentityWithGCD(other.residue, modulus) - require(gcdOfOtherResidueAndModulus == 1) { "can not divide to residue that has non-trivial GCD with modulo" } - return IntModulo( - (residue * reciprocalCandidate) % modulus, - modulus, - toCheckInput = false - ) - } - operator fun div(other: Int): IntModulo { - val (reciprocalCandidate, gcdOfOtherResidueAndModulus) = bezoutIdentityWithGCD(other, modulus) - require(gcdOfOtherResidueAndModulus == 1) { "can not divide to residue that has non-trivial GCD with modulo" } - return IntModulo( - (residue * reciprocalCandidate) % modulus, - modulus, - toCheckInput = false - ) - } - override fun equals(other: Any?): Boolean = - when (other) { - is IntModulo -> residue == other.residue && modulus == other.modulus - else -> false - } - - override fun hashCode(): Int = residue.hashCode() - - override fun toString(): String = "$residue mod $modulus" -} - -@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE") -@OptIn(UnstableKMathAPI::class) -class IntModuloRing : Ring { - - val modulus: Int - - constructor(modulus: Int) { - require(modulus != 0) { "modulus can not be zero" } - this.modulus = if (modulus < 0) -modulus else modulus - } - - override inline val zero: IntModulo get() = IntModulo(0, modulus, toCheckInput = false) - override inline val one: IntModulo get() = IntModulo(1, modulus, toCheckInput = false) - - fun number(arg: Int) = IntModulo(arg, modulus, toCheckInput = false) - - override inline fun add(left: IntModulo, right: IntModulo): IntModulo = left + right - override inline fun multiply(left: IntModulo, right: IntModulo): IntModulo = left * right - - override inline fun IntModulo.unaryMinus(): IntModulo = -this - override inline fun IntModulo.plus(arg: IntModulo): IntModulo = this + arg - override inline fun IntModulo.minus(arg: IntModulo): IntModulo = this - arg - override inline fun IntModulo.times(arg: IntModulo): IntModulo = this * arg - inline fun IntModulo.div(arg: IntModulo): IntModulo = this / arg -} - -fun ListPolynomialSpace.number(arg: Int) = IntModulo(arg, ring.modulus, toCheckInput = false) - -fun ListPolynomialSpace.ListPolynomial(vararg coefs: Int): ListPolynomial = - ListPolynomial(coefs.map { IntModulo(it, ring.modulus) }) -fun IntModuloRing.ListPolynomial(vararg coefs: Int): ListPolynomial = - ListPolynomial(coefs.map { IntModulo(it, modulus) }) \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/Rational.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/Rational.kt deleted file mode 100644 index 72bb5942c..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/Rational.kt +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.test.misc - -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.Field -import space.kscience.kmath.operations.NumbersAddOps - -class Rational { - companion object { - val ZERO: Rational = Rational(0L) - val ONE: Rational = Rational(1L) - } - - val numerator: Long - val denominator: Long - - internal constructor(numerator: Long, denominator: Long, toCheckInput: Boolean = true) { - if (toCheckInput) { - if (denominator == 0L) throw ArithmeticException("/ by zero") - - val greatestCommonDivider = gcd(numerator, denominator).let { if (denominator < 0L) -it else it } - - this.numerator = numerator / greatestCommonDivider - this.denominator = denominator / greatestCommonDivider - } else { - this.numerator = numerator - this.denominator = denominator - } - } - - constructor(numerator: Int, denominator: Int) : this(numerator.toLong(), denominator.toLong(), true) - constructor(numerator: Int, denominator: Long) : this(numerator.toLong(), denominator, true) - constructor(numerator: Long, denominator: Int) : this(numerator, denominator.toLong(), true) - constructor(numerator: Long, denominator: Long) : this(numerator, denominator, true) - constructor(numerator: Int) : this(numerator.toLong(), 1L, false) - constructor(numerator: Long) : this(numerator, 1L, false) - - operator fun unaryPlus(): Rational = this - operator fun unaryMinus(): Rational = Rational(-this.numerator, this.denominator) - operator fun plus(other: Rational): Rational = - Rational( - numerator * other.denominator + denominator * other.numerator, - denominator * other.denominator - ) - operator fun plus(other: Int): Rational = - Rational( - numerator + denominator * other.toLong(), - denominator - ) - operator fun plus(other: Long): Rational = - Rational( - numerator + denominator * other, - denominator - ) - operator fun minus(other: Rational): Rational = - Rational( - numerator * other.denominator - denominator * other.numerator, - denominator * other.denominator - ) - operator fun minus(other: Int): Rational = - Rational( - numerator - denominator * other.toLong(), - denominator - ) - operator fun minus(other: Long): Rational = - Rational( - numerator - denominator * other, - denominator - ) - operator fun times(other: Rational): Rational = - Rational( - numerator * other.numerator, - denominator * other.denominator - ) - operator fun times(other: Int): Rational = - Rational( - numerator * other.toLong(), - denominator - ) - operator fun times(other: Long): Rational = - Rational( - numerator * other, - denominator - ) - operator fun div(other: Rational): Rational = - Rational( - numerator * other.denominator, - denominator * other.numerator - ) - operator fun div(other: Int): Rational = - Rational( - numerator, - denominator * other.toLong() - ) - operator fun div(other: Long): Rational = - Rational( - numerator, - denominator * other - ) - override fun equals(other: Any?): Boolean = - when (other) { - is Rational -> numerator == other.numerator && denominator == other.denominator - is Int -> numerator == other && denominator == 1L - is Long -> numerator == other && denominator == 1L - else -> false - } - - override fun hashCode(): Int = 31 * numerator.hashCode() + denominator.hashCode() - - override fun toString(): String = if (denominator == 1L) "$numerator" else "$numerator/$denominator" -} - -@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE") -@OptIn(UnstableKMathAPI::class) -object RationalField : Field, NumbersAddOps { - override inline val zero: Rational get() = Rational.ZERO - override inline val one: Rational get() = Rational.ONE - - override inline fun number(value: Number): Rational = Rational(value.toLong()) - - override inline fun add(left: Rational, right: Rational): Rational = left + right - override inline fun multiply(left: Rational, right: Rational): Rational = left * right - override inline fun divide(left: Rational, right: Rational): Rational = left / right - override inline fun scale(a: Rational, value: Double): Rational = a * number(value) - - override inline fun Rational.unaryMinus(): Rational = -this - override inline fun Rational.plus(arg: Rational): Rational = this + arg - override inline fun Rational.minus(arg: Rational): Rational = this - arg - override inline fun Rational.times(arg: Rational): Rational = this * arg - override inline fun Rational.div(arg: Rational): Rational = this / arg -} \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/RationalWithMemorization.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/RationalWithMemorization.kt deleted file mode 100644 index 05d9115fa..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/RationalWithMemorization.kt +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.test.misc - -import space.kscience.kmath.misc.UnstableKMathAPI -import space.kscience.kmath.operations.* - -class RationalWithMemorization private constructor( - val value: Rational, - override val memory : OperationsMemory -): WithMemorization { - companion object { - /** - * Constant containing the zero (the additive identity) of the [Rational] field. - */ - public val ZERO: RationalWithMemorization = RationalWithMemorization(Rational.ZERO, object : Endpoint {}) - /** - * Constant containing the one (the multiplicative identity) of the [Rational] field. - */ - public val ONE: RationalWithMemorization = RationalWithMemorization(Rational.ONE, object : Endpoint {}) - } - constructor(numerator: Int, denominator: Int) : this(Rational(numerator, denominator), object : Endpoint {}) - constructor(numerator: Int, denominator: Long) : this(Rational(numerator, denominator), object : Endpoint {}) - constructor(numerator: Long, denominator: Int) : this(Rational(numerator, denominator), object : Endpoint {}) - constructor(numerator: Long, denominator: Long) : this(Rational(numerator, denominator), object : Endpoint {}) - constructor(numerator: Int) : this(Rational(numerator), object : Endpoint {}) - constructor(numerator: Long) : this(Rational(numerator), object : Endpoint {}) - - operator fun unaryPlus(): RationalWithMemorization = this - operator fun unaryMinus(): RationalWithMemorization = RationalWithMemorization( - -value, - object : Negation { - override val negated: OperationsMemory = memory - } - ) - operator fun plus(other: RationalWithMemorization): RationalWithMemorization = RationalWithMemorization( - value + other.value, - object : Sum { - override val augend: OperationsMemory = memory - override val addend: OperationsMemory = other.memory - } - ) - operator fun minus(other: RationalWithMemorization): RationalWithMemorization = RationalWithMemorization( - value - other.value, - object : Difference { - override val minuend: OperationsMemory = memory - override val subtrahend: OperationsMemory = other.memory - } - ) - operator fun times(other: RationalWithMemorization): RationalWithMemorization = RationalWithMemorization( - value * other.value, - object : Product { - override val multiplicand: OperationsMemory = memory - override val multiplier: OperationsMemory = other.memory - } - ) - operator fun div(other: RationalWithMemorization): RationalWithMemorization = RationalWithMemorization( - value / other.value, - object : Quotient { - override val dividend: OperationsMemory = memory - override val divisor: OperationsMemory = other.memory - } - ) - - override fun equals(other: Any?): Boolean = - other is RationalWithMemorization && value == other.value - - override fun hashCode(): Int = value.hashCode() - - override fun toString(): String = value.toString() -} - -@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE") -object RationalWithMemorizationRing : Ring { - override inline val zero: RationalWithMemorization get() = RationalWithMemorization.ZERO - override inline val one: RationalWithMemorization get() = RationalWithMemorization.ONE - - override inline fun add(left: RationalWithMemorization, right: RationalWithMemorization): RationalWithMemorization = left + right - override inline fun multiply(left: RationalWithMemorization, right: RationalWithMemorization): RationalWithMemorization = left * right - - override inline fun RationalWithMemorization.unaryMinus(): RationalWithMemorization = -this - override inline fun RationalWithMemorization.plus(arg: RationalWithMemorization): RationalWithMemorization = this + arg - override inline fun RationalWithMemorization.minus(arg: RationalWithMemorization): RationalWithMemorization = this - arg - override inline fun RationalWithMemorization.times(arg: RationalWithMemorization): RationalWithMemorization = this * arg -} - -@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE") -object RationalWithMemorizationField : Field { - override inline val zero: RationalWithMemorization get() = RationalWithMemorization.ZERO - override inline val one: RationalWithMemorization get() = RationalWithMemorization.ONE - - override inline fun number(value: Number): RationalWithMemorization = RationalWithMemorization(value.toLong()) - - override inline fun add(left: RationalWithMemorization, right: RationalWithMemorization): RationalWithMemorization = left + right - override inline fun multiply(left: RationalWithMemorization, right: RationalWithMemorization): RationalWithMemorization = left * right - override inline fun divide(left: RationalWithMemorization, right: RationalWithMemorization): RationalWithMemorization = left / right - override inline fun scale(a: RationalWithMemorization, value: Double): RationalWithMemorization = a * number(value) - - override inline fun RationalWithMemorization.unaryMinus(): RationalWithMemorization = -this - override inline fun RationalWithMemorization.plus(arg: RationalWithMemorization): RationalWithMemorization = this + arg - override inline fun RationalWithMemorization.minus(arg: RationalWithMemorization): RationalWithMemorization = this - arg - override inline fun RationalWithMemorization.times(arg: RationalWithMemorization): RationalWithMemorization = this * arg - override inline fun RationalWithMemorization.div(arg: RationalWithMemorization): RationalWithMemorization = this / arg -} \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/memorization.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/memorization.kt deleted file mode 100644 index a4fb81274..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/memorization.kt +++ /dev/null @@ -1,51 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.test.misc - -sealed interface OperationsMemory - -interface Endpoint: OperationsMemory - -interface Negation: OperationsMemory { - val negated: OperationsMemory -} - -interface Sum: OperationsMemory { - val augend: OperationsMemory - val addend: OperationsMemory -} - -interface Difference: OperationsMemory { - val minuend: OperationsMemory - val subtrahend: OperationsMemory -} - -interface Product: OperationsMemory { - val multiplicand: OperationsMemory - val multiplier: OperationsMemory -} - -interface Quotient: OperationsMemory { - val dividend: OperationsMemory - val divisor: OperationsMemory -} - - -fun equalMemories(one: OperationsMemory, other: OperationsMemory) : Boolean = - when(one) { - is Negation -> other is Negation && equalMemories(one.negated, other.negated) - is Sum -> other is Sum && equalMemories(one.augend, other.augend) && equalMemories(one.addend, other.addend) - is Difference -> other is Difference && equalMemories(one.minuend, other.minuend) && equalMemories(one.subtrahend, other.subtrahend) - is Product -> other is Product && equalMemories(one.multiplicand, other.multiplicand) && equalMemories(one.multiplier, other.multiplier) - is Quotient -> other is Quotient && equalMemories(one.dividend, other.dividend) && equalMemories(one.divisor, other.divisor) - is Endpoint -> one === other - } - -interface WithMemorization { - val memory: OperationsMemory -} - -fun equalMemories(one: WithMemorization, other: WithMemorization) : Boolean = equalMemories(one.memory, other.memory) \ No newline at end of file diff --git a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/misc.kt b/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/misc.kt deleted file mode 100644 index cc647fa2c..000000000 --- a/kmath-functions/src/commonTest/kotlin/space/kscience/kmath/test/misc/misc.kt +++ /dev/null @@ -1,31 +0,0 @@ -/* - * Copyright 2018-2021 KMath contributors. - * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file. - */ - -package space.kscience.kmath.test.misc - -// TODO: Move to corresponding module "kmath-number-theory" - -import kotlin.math.abs - - -data class BezoutIdentityWithGCD(val first: T, val second: T, val gcd: T) - -tailrec fun gcd(a: Long, b: Long): Long = if (a == 0L) abs(b) else gcd(b % a, a) - -fun bezoutIdentityWithGCD(a: Int, b: Int): BezoutIdentityWithGCD = - when { - a < 0 && b < 0 -> with(bezoutIdentityWithGCDInternalLogic(-a, -b, 1, 0, 0, 1)) { BezoutIdentityWithGCD(-first, -second, gcd) } - a < 0 -> with(bezoutIdentityWithGCDInternalLogic(-a, b, 1, 0, 0, 1)) { BezoutIdentityWithGCD(-first, second, gcd) } - b < 0 -> with(bezoutIdentityWithGCDInternalLogic(a, -b, 1, 0, 0, 1)) { BezoutIdentityWithGCD(first, -second, gcd) } - else -> bezoutIdentityWithGCDInternalLogic(a, b, 1, 0, 0, 1) - } - -internal tailrec fun bezoutIdentityWithGCDInternalLogic(a: Int, b: Int, m1: Int, m2: Int, m3: Int, m4: Int): BezoutIdentityWithGCD = - if (b == 0) BezoutIdentityWithGCD(m1, m3, a) - else { - val quotient = a / b - val reminder = a % b - bezoutIdentityWithGCDInternalLogic(b, reminder, m2, m1 - quotient * m2, m4, m3 - quotient * m4) - } \ No newline at end of file