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Delete unchecked cast, revert evaluate changes, add RealField handling "pow" operation

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Iaroslav 2020-07-27 20:46:57 +07:00
parent c64a89c6b6
commit 0995dca8b8
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GPG Key ID: 46E15E4A31B3BCD7
2 changed files with 16 additions and 12 deletions
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11
kmath-ast/src/commonMain/kotlin/scientifik/kmath/ast/MST.kt
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@ -2,6 +2,7 @@ package scientifik.kmath.ast
import scientifik.kmath.operations.Algebra
import scientifik.kmath.operations.NumericAlgebra
import scientifik.kmath.operations.RealField
/**
* A Mathematical Syntax Tree node for mathematical expressions
@ -47,13 +48,17 @@ fun <T> Algebra<T>.evaluate(node: MST): T = when (node) {
is MST.Unary -> unaryOperation(node.operation, evaluate(node.value))
is MST.Binary -> when {
this !is NumericAlgebra -> binaryOperation(node.operation, evaluate(node.left), evaluate(node.right))
node.left is MST.Numeric && node.right is MST.Numeric -> {
binaryOperation(
val number = RealField.binaryOperation(
node.operation,
number(node.left.value),
number(node.right.value)
node.left.value.toDouble(),
node.right.value.toDouble()
)
number(number)
}
node.left is MST.Numeric -> leftSideNumberOperation(node.operation, node.left.value, evaluate(node.right))
node.right is MST.Numeric -> rightSideNumberOperation(node.operation, evaluate(node.left), node.right.value)
else -> binaryOperation(node.operation, evaluate(node.left), evaluate(node.right))

17
kmath-core/src/commonMain/kotlin/scientifik/kmath/operations/NumberAlgebra.kt
View File

@ -1,5 +1,6 @@
package scientifik.kmath.operations
import scientifik.kmath.operations.RealField.pow
import kotlin.math.abs
import kotlin.math.pow as kpow
@ -34,13 +35,6 @@ interface ExtendedField<T> : ExtendedFieldOperations<T>, Field<T> {
}
}
interface NumberExtendedField<T> : ExtendedField<T> {
override fun binaryOperation(operation: String, left: T, right: T): T = when (operation) {
PowerOperations.POW_OPERATION -> power(left, right as Number)
else -> super.binaryOperation(operation, left, right)
}
}
/**
* Real field element wrapping double.
*
@ -60,7 +54,7 @@ inline class Real(val value: Double) : FieldElement<Double, Real, RealField> {
* A field for double without boxing. Does not produce appropriate field element
*/
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
object RealField : NumberExtendedField<Double>, Norm<Double, Double> {
object RealField : ExtendedField<Double>, Norm<Double, Double> {
override val zero: Double = 0.0
override inline fun add(a: Double, b: Double) = a + b
override inline fun multiply(a: Double, b: Double) = a * b
@ -92,10 +86,15 @@ object RealField : NumberExtendedField<Double>, Norm<Double, Double> {
override inline fun Double.times(b: Double) = this * b
override inline fun Double.div(b: Double) = this / b
override fun binaryOperation(operation: String, left: Double, right: Double): Double = when (operation) {
PowerOperations.POW_OPERATION -> left pow right
else -> super.binaryOperation(operation, left, right)
}
}
@Suppress("EXTENSION_SHADOWED_BY_MEMBER", "OVERRIDE_BY_INLINE", "NOTHING_TO_INLINE")
object FloatField : NumberExtendedField<Float>, Norm<Float, Float> {
object FloatField : ExtendedField<Float>, Norm<Float, Float> {
override val zero: Float = 0f
override inline fun add(a: Float, b: Float) = a + b
override inline fun multiply(a: Float, b: Float) = a * b