Add exponential functions

src/test/java/org/jetbrains/plugins/ideavim/ex/implementation/functions/floatFunctions/ExpFunctionTest.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2003-2025 The IdeaVim authors
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE.txt file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package org.jetbrains.plugins.ideavim.ex.implementation.functions.floatFunctions
+
+import org.jetbrains.plugins.ideavim.VimTestCase
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInfo
+
+class ExpFunctionTest : VimTestCase() {
+  @BeforeEach
+  override fun setUp(testInfo: TestInfo) {
+    super.setUp(testInfo)
+    configureByText("\n")
+  }
+
+  @Test
+  fun `test exp with Number`() {
+    assertCommandOutput("echo exp(2)", "7.389056")
+  }
+
+  @Test
+  fun `test exp with Float`() {
+    assertCommandOutput("echo exp(-4.01)", "0.018133")
+  }
+
+  @Test
+  fun `test exp with negative number`() {
+    assertCommandOutput("echo exp(-1)", "0.367879")
+  }
+
+  @Test
+  fun `test exp with string causes errors`() {
+    enterCommand("echo exp('1.0')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test exp with invalid string causes errors`() {
+    enterCommand("echo exp('cheese')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test exp with list causes errors`() {
+    enterCommand("echo exp([1.0])")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test exp with dictionary causes errors`() {
+    enterCommand("echo exp({1: 1.0})")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+}

src/test/java/org/jetbrains/plugins/ideavim/ex/implementation/functions/floatFunctions/Log10FunctionTest.kt

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2003-2025 The IdeaVim authors
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE.txt file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package org.jetbrains.plugins.ideavim.ex.implementation.functions.floatFunctions
+
+import org.jetbrains.plugins.ideavim.VimTestCase
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInfo
+
+class Log10FunctionTest : VimTestCase() {
+  @BeforeEach
+  override fun setUp(testInfo: TestInfo) {
+    super.setUp(testInfo)
+    configureByText("\n")
+  }
+
+  @Test
+  fun `test log10 with Number`() {
+    assertCommandOutput("echo log10(1000)", "3.0")
+  }
+
+  @Test
+  fun `test log10 with Float`() {
+    assertCommandOutput("echo log10(0.01)", "-2.0")
+  }
+
+  @Test
+  fun `test log10 with negative number`() {
+    assertCommandOutput("echo log10(-1)", "nan")
+  }
+
+  @Test
+  fun `test log10 with string causes errors`() {
+    enterCommand("echo log10('1.0')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log10 with invalid string causes errors`() {
+    enterCommand("echo log10('cheese')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log10 with list causes errors`() {
+    enterCommand("echo log10([1.0])")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log10 with dictionary causes errors`() {
+    enterCommand("echo log10({1: 1.0})")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+}

src/test/java/org/jetbrains/plugins/ideavim/ex/implementation/functions/floatFunctions/LogFunctionTest.kt

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2003-2025 The IdeaVim authors
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE.txt file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package org.jetbrains.plugins.ideavim.ex.implementation.functions.floatFunctions
+
+import org.jetbrains.plugins.ideavim.VimTestCase
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.TestInfo
+
+class LogFunctionTest : VimTestCase() {
+  @BeforeEach
+  override fun setUp(testInfo: TestInfo) {
+    super.setUp(testInfo)
+    configureByText("\n")
+  }
+
+  @Test
+  fun `test log with Number`() {
+    assertCommandOutput("echo log(10)", "2.302585")
+  }
+
+  @Test
+  fun `test log with Float`() {
+    assertCommandOutput("echo log(0.1)", "-2.302585")
+  }
+
+  @Test
+  fun `test log and exp round trips value`() {
+    assertCommandOutput("echo log(exp(1))", "1.0")
+  }
+
+  @Test
+  fun `test log with negative number`() {
+    assertCommandOutput("echo log(-1)", "nan")
+  }
+
+  @Test
+  fun `test log with string causes errors`() {
+    enterCommand("echo log('1.0')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log with invalid string causes errors`() {
+    enterCommand("echo log('cheese')")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log with list causes errors`() {
+    enterCommand("echo log([1.0])")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+
+  @Test
+  fun `test log with dictionary causes errors`() {
+    enterCommand("echo log({1: 1.0})")
+    assertPluginError(true)
+    assertPluginErrorMessageContains("E808: Number or Float required")
+  }
+}

vim-engine/src/main/kotlin/com/maddyhome/idea/vim/vimscript/model/functions/handlers/floatFunctions/ExponentialFunctionHandlers.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2003-2025 The IdeaVim authors
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE.txt file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions
+
+import com.intellij.vim.annotations.VimscriptFunction
+import kotlin.math.exp
+import kotlin.math.ln
+import kotlin.math.log10
+
+@VimscriptFunction("exp")
+internal class ExpFunctionHandler : UnaryFloatFunctionHandlerBase() {
+  override fun invoke(argument: Double) = exp(argument)
+}
+
+@VimscriptFunction("log")
+internal class LogFunctionHandler : UnaryFloatFunctionHandlerBase() {
+  override fun invoke(argument: Double) = ln(argument)
+}
+
+@VimscriptFunction("log10")
+internal class Log10FunctionHandler : UnaryFloatFunctionHandlerBase() {
+  override fun invoke(argument: Double) = log10(argument)
+}

vim-engine/src/main/resources/ksp-generated/engine_vimscript_functions.json

@@ -12,6 +12,7 @@
     "empty": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.EmptyFunctionHandler",
     "escape": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.stringFunctions.EscapeFunctionHandler",
     "exists": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.variousFunctions.ExistsFunctionHandler",
+    "exp": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.ExpFunctionHandler",
     "floor": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.FloorFunctionHandler",
     "funcref": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.varFunctions.FuncrefFunctionHandler",
     "function": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.varFunctions.FunctionFunctionHandler",
@@ -21,6 +22,8 @@
     "join": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.listFunctions.JoinFunctionHandler",
     "len": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.LenFunctionHandler",
     "line": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.cursorFunctions.LineFunctionHandler",
+    "log": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.LogFunctionHandler",
+    "log10": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.Log10FunctionHandler",
     "or": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.bitwiseFunctions.OrFunctionHandler",
     "round": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.RoundFunctionHandler",
     "sin": "com.maddyhome.idea.vim.vimscript.model.functions.handlers.floatFunctions.SinFunctionHandler",