added complext number support

lynglib/src/commonTest/kotlin/net/sergeych/lyng/ComplexModuleTest.kt

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package net.sergeych.lyng
+
+import kotlinx.coroutines.test.runTest
+import kotlin.test.Test
+
+class ComplexModuleTest {
+    @Test
+    fun testComplexArithmeticAndInterop() = runTest {
+        val scope = Script.newScope()
+        scope.eval(
+            """
+            import lyng.complex
+
+            assertEquals(Complex(0.0, 2.0), 2.i)
+            assertEquals(Complex(2.0, 0.0), 2.re)
+            assertEquals(Complex(1.0, 2.0), 1 + 2.i)
+            assertEquals(Complex(1.5, 2.0), 1.5 + 2.i)
+            assertEquals(Complex(3.0, 2.0), 1 + Complex(2.0, 2.0))
+            val product: Complex = Complex(1.0, 2.0) * Complex(3.0, -1.0)
+            assertEquals(5.0, product.re)
+            assertEquals(5.0, product.im)
+            val quotient: Complex = Complex(5.0, 5.0) / Complex(3.0, -1.0)
+            assertEquals(1.0, quotient.re)
+            assertEquals(2.0, quotient.im)
+            assertEquals(Complex(1.0, -2.0), Complex(1.0, 2.0).conjugate)
+            """.trimIndent()
+        )
+    }
+
+    @Test
+    fun testComplexMemberMathFunctions() = runTest {
+        val scope = Script.newScope()
+        scope.eval(
+            """
+            import lyng.complex
+
+            val eps = 1e-9
+
+            val eipi = Complex.imaginary(π).exp()
+            assert(abs(eipi.re + 1.0) < eps)
+            assert(abs(eipi.im) < eps)
+
+            val iy: Complex = 2.i
+            val sinIy = iy.sin()
+            assert(abs(sinIy.re) < eps)
+            assert(abs(sinIy.im - sinh(2.0)) < eps)
+
+            val minusOne: Complex = (-1).re
+            val root = minusOne.sqrt()
+            assert(abs(root.re) < eps)
+            assert(abs(root.im - 1.0) < eps)
+
+            val unitLeft: Complex = cis(π)
+            assert(abs(unitLeft.re + 1.0) < eps)
+            assert(abs(unitLeft.im) < eps)
+            """.trimIndent()
+        )
+    }
+}