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Dev #194

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altavir merged 266 commits from dev into master 2021-01-20 17:32:32 +03:00
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kmath-core/src/commonMain/kotlin/kscience/kmath/expressions/DifferentiableExpression.kt
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@ -1,20 +1,15 @@
package kscience.kmath.expressions package kscience.kmath.expressions
/** /**
* And object that could be differentiated * An expression that provides derivatives
*/ */
public interface Differentiable<T> { public interface DifferentiableExpression<T> : Expression<T>{
public fun derivativeOrNull(orders: Map<Symbol, Int>): T? public fun derivativeOrNull(orders: Map<Symbol, Int>): Expression<T>?
} }
public fun <T> Differentiable<T>.derivative(orders: Map<Symbol, Int>): T = public fun <T> DifferentiableExpression<T>.derivative(orders: Map<Symbol, Int>): Expression<T> =
derivativeOrNull(orders) ?: error("Derivative with orders $orders not provided") derivativeOrNull(orders) ?: error("Derivative with orders $orders not provided")
/**
* An expression that provid
*/
public interface DifferentiableExpression<T> : Differentiable<Expression<T>>, Expression<T>
public fun <T> DifferentiableExpression<T>.derivative(vararg orders: Pair<Symbol, Int>): Expression<T> = public fun <T> DifferentiableExpression<T>.derivative(vararg orders: Pair<Symbol, Int>): Expression<T> =
derivative(mapOf(*orders)) derivative(mapOf(*orders))