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Peva Blanchard
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Jul 22, 2023
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36 changes: 36 additions & 0 deletions
36
src/main/kotlin/ch/kleis/lcaplugin/ui/toolwindow/DualNumberRenderer.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package ch.kleis.lcaplugin.ui.toolwindow | ||
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| import ch.kleis.lcaplugin.core.lang.evaluator.ArgumentName | ||
| import ch.kleis.lcaplugin.core.math.DualNumber | ||
| import ch.kleis.lcaplugin.core.matrix.IndexedCollection | ||
| import org.jetbrains.kotlinx.multik.ndarray.operations.toList | ||
| import kotlin.math.abs | ||
|
|
||
| class DualNumberRenderer( | ||
| private val arguments: IndexedCollection<ArgumentName> | ||
| ) { | ||
| private val absoluteSensitivityThreshold = 1e-10 | ||
| private val relativeToMaxThreshold = 2e-2 | ||
| private val dot = "\u00B7" | ||
| private val delta = "δ" | ||
|
|
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| fun render(v: DualNumber): String { | ||
| val z = "${DisplayedNumber(v.zeroth)}" | ||
| val f = v.first | ||
| .toList() | ||
| .mapIndexed { i, d -> | ||
| d to arguments[i].uid | ||
| } | ||
| val maxSensitivity = f.maxOf { abs(it.first) } | ||
| val ff = f | ||
| .filter { maxSensitivity > absoluteSensitivityThreshold && abs(it.first)/maxSensitivity > relativeToMaxThreshold } | ||
| .fold("") { acc, p -> | ||
| val d = p.first | ||
| val absD = DisplayedNumber(abs(d)) | ||
| val parameterName = p.second | ||
| if (d >= 0.0) "$acc + $absD$dot$delta$parameterName" | ||
| else "$acc - $absD$dot$delta$parameterName" | ||
| } | ||
| return z + ff | ||
| } | ||
| } |
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36 changes: 36 additions & 0 deletions
36
src/test/kotlin/ch/kleis/lcaplugin/ui/toolwindow/DualNumberRendererTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package ch.kleis.lcaplugin.ui.toolwindow | ||
|
|
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| import ch.kleis.lcaplugin.core.lang.evaluator.ArgumentName | ||
| import ch.kleis.lcaplugin.core.math.DualNumber | ||
| import ch.kleis.lcaplugin.core.matrix.IndexedCollection | ||
| import org.junit.Test | ||
| import kotlin.test.assertEquals | ||
|
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|
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| class DualNumberRendererTest { | ||
| private val dx = DualNumber.basis(2, 0) | ||
| private val dy = DualNumber.basis(2, 1) | ||
|
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| @Test | ||
| fun test_render() { | ||
| // given | ||
| val arguments = IndexedCollection( | ||
| listOf( | ||
| "x", "y" | ||
| ).map { ArgumentName(it) } | ||
| ) | ||
| val renderer = DualNumberRenderer(arguments) | ||
|
|
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| // when/then | ||
| listOf( | ||
| DualNumber.constant(123456.123) to "123E3", | ||
| DualNumber.constant(123456.123) + dx to "123E3 + 1\u00B7δx", | ||
| DualNumber.constant(123456.123) - dy to "123E3 - 1\u00B7δy", | ||
| ).forEach { | ||
| val actual = renderer.render(it.first) | ||
| assertEquals(it.second, actual) | ||
| } | ||
| } | ||
|
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|
|
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| } |
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