KDoc API reference updates #258

Merged
CommanderTvis merged 3 commits from commandertvis/doc into dev 2021-03-23 15:55:52 +03:00
5 changed files with 55 additions and 11 deletions
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@ -10,8 +10,9 @@ import kotlin.math.max
import kotlin.math.pow
/**
* Polynomial coefficients without fixation on specific context they are applied to
* @param coefficients constant is the leftmost coefficient
* Polynomial coefficients model without fixation on specific context they are applied to.
*
* @param coefficients constant is the leftmost coefficient.
*/
public inline class Polynomial<T : Any>(public val coefficients: List<T>)
@ -21,8 +22,14 @@ public inline class Polynomial<T : Any>(public val coefficients: List<T>)
@Suppress("FunctionName")
public fun <T : Any> Polynomial(vararg coefficients: T): Polynomial<T> = Polynomial(coefficients.toList())
/**
* Evaluates the value of the given double polynomial for given double argument.
*/
public fun Polynomial<Double>.value(): Double = coefficients.reduceIndexed { index, acc, d -> acc + d.pow(index) }
/**
* Evaluates the value of the given polynomial for given argument.
*/
public fun <T : Any, C : Ring<T>> Polynomial<T>.value(ring: C, arg: T): T = ring {
if (coefficients.isEmpty()) return@ring zero
var res = coefficients.first()
@ -38,19 +45,23 @@ public fun <T : Any, C : Ring<T>> Polynomial<T>.value(ring: C, arg: T): T = ring
}
/**
* Represent the polynomial as a regular context-less function
* Represent the polynomial as a regular context-less function.
*/
public fun <T : Any, C : Ring<T>> Polynomial<T>.asFunction(ring: C): (T) -> T = { value(ring, it) }
/**
* An algebra for polynomials
* Space of polynomials.
*
* @param T the type of operated polynomials.
* @param C the intersection of [Ring] of [T] and [ScaleOperations] of [T].
* @param ring the [C] instance.
*/
public class PolynomialSpace<T : Any, C>(
private val ring: C,
) : Group<Polynomial<T>>, ScaleOperations<Polynomial<T>> where C : Ring<T>, C : ScaleOperations<T> {
public override val zero: Polynomial<T> = Polynomial(emptyList())
override fun Polynomial<T>.unaryMinus(): Polynomial<T> = with(ring) {
override fun Polynomial<T>.unaryMinus(): Polynomial<T> = ring {
Polynomial(coefficients.map { -it })
}
@ -67,6 +78,9 @@ public class PolynomialSpace<T : Any, C>(
public override fun scale(a: Polynomial<T>, value: Double): Polynomial<T> =
ring { Polynomial(List(a.coefficients.size) { index -> a.coefficients[index] * value }) }
/**
* Evaluates the polynomial for the given value [arg].
*/
public operator fun Polynomial<T>.invoke(arg: T): T = value(ring, arg)
}

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@ -1,11 +1,11 @@
package space.kscience.kmath.integration
/**
* A general interface for all integrators
* A general interface for all integrators.
*/
public interface Integrator<I : Integrand> {
/**
* Run one integration pass and return a new [Integrand] with a new set of features
* Runs one integration pass and return a new [Integrand] with a new set of features.
*/
public fun integrate(integrand: I): I
}
}

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@ -61,4 +61,4 @@ public fun UnivariateIntegrator<Double>.integrate(
return integrate(
UnivariateIntegrand(function, *features.toTypedArray())
).value ?: error("Unexpected: no value after integration.")
}
}

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@ -8,8 +8,11 @@ import space.kscience.kmath.operations.invoke
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
* 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<T : Comparable<T>>(
public override val algebra: Field<T>,

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@ -3,13 +3,40 @@ package space.kscience.kmath.interpolation
import space.kscience.kmath.nd.Structure2D
import space.kscience.kmath.structures.Buffer
/**
* Pair of associated buffers for X and Y axes values.
*
* @param X the type of X values.
* @param Y the type of Y values.
*/
public interface XYPointSet<X, Y> {
/**
* The size of all the involved buffers.
*/
public val size: Int
/**
* The buffer of X values.
*/
public val x: Buffer<X>
/**
* The buffer of Y values.
*/
public val y: Buffer<Y>
}
/**
* Triple of associated buffers for X, Y, and Z axes values.
*
* @param X the type of X values.
* @param Y the type of Y values.
* @param Z the type of Z values.
*/
public interface XYZPointSet<X, Y, Z> : XYPointSet<X, Y> {
/**
* The buffer of Z values.
*/
public val z: Buffer<Z>
}