diff --git a/kmath-core/src/commonMain/kotlin/scientifik/kmath/misc/functions.kt b/kmath-core/src/commonMain/kotlin/scientifik/kmath/misc/functions.kt
deleted file mode 100644
index cef8209ed..000000000
--- a/kmath-core/src/commonMain/kotlin/scientifik/kmath/misc/functions.kt
+++ /dev/null
@@ -1,37 +0,0 @@
-package scientifik.kmath.coroutines
-
-import scientifik.kmath.operations.RealField
-import scientifik.kmath.operations.SpaceOperations
-import kotlin.jvm.JvmName
-
-/**
- * A suspendable univariate function defined in algebraic context
- */
-interface UFunction<T, C : SpaceOperations<T>> {
-    suspend operator fun C.invoke(arg: T): T
-}
-
-suspend fun UFunction<Double, RealField>.invoke(arg: Double) = RealField.invoke(arg)
-
-/**
- * A suspendable multivariate (N->1) function defined on algebraic context
- */
-interface MFunction<T, C : SpaceOperations<T>> {
-    /**
-     * The input dimension of the function
-     */
-    val dimension: UInt
-
-    suspend operator fun C.invoke(vararg args: T): T
-}
-
-suspend fun MFunction<Double, RealField>.invoke(args: DoubleArray) = RealField.invoke(*args.toTypedArray())
-@JvmName("varargInvoke")
-suspend fun MFunction<Double, RealField>.invoke(vararg args: Double) = RealField.invoke(*args.toTypedArray())
-
-/**
- * A suspendable univariate function with parameter
- */
-interface ParametricUFunction<T, P, C : SpaceOperations<T>> {
-    suspend operator fun C.invoke(arg: T, parameter: P): T
-}
diff --git a/kmath-functions/build.gradle.kts b/kmath-functions/build.gradle.kts
new file mode 100644
index 000000000..373d9b8ac
--- /dev/null
+++ b/kmath-functions/build.gradle.kts
@@ -0,0 +1,23 @@
+plugins {
+    id("scientifik.mpp")
+    //id("scientifik.atomic")
+}
+
+kotlin.sourceSets {
+    commonMain {
+        dependencies {
+            api(project(":kmath-core"))
+            api("org.jetbrains.kotlinx:kotlinx-coroutines-core-common:${Scientifik.coroutinesVersion}")
+        }
+    }
+    jvmMain {
+        dependencies {
+            api("org.jetbrains.kotlinx:kotlinx-coroutines-core:${Scientifik.coroutinesVersion}")
+        }
+    }
+    jsMain {
+        dependencies {
+            api("org.jetbrains.kotlinx:kotlinx-coroutines-core-js:${Scientifik.coroutinesVersion}")
+        }
+    }
+}
diff --git a/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Piecewise.kt b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Piecewise.kt
new file mode 100644
index 000000000..d1263e58b
--- /dev/null
+++ b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Piecewise.kt
@@ -0,0 +1,2 @@
+package scientifik.kmath.functions
+
diff --git a/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Polynomial.kt b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Polynomial.kt
new file mode 100644
index 000000000..855ed26cd
--- /dev/null
+++ b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/Polynomial.kt
@@ -0,0 +1,4 @@
+package scientifik.kmath.functions
+
+interface Polynomial {
+}
\ No newline at end of file
diff --git a/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/functions.kt b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/functions.kt
new file mode 100644
index 000000000..c26443926
--- /dev/null
+++ b/kmath-functions/src/commonMain/kotlin/scientifik.kmath.functions/functions.kt
@@ -0,0 +1,54 @@
+package scientifik.kmath.misc
+
+import scientifik.kmath.operations.RealField
+import scientifik.kmath.operations.SpaceOperations
+import kotlin.jvm.JvmName
+
+/**
+ * A regular function that could be called only inside specific algebra context
+ */
+interface UFunction<T, C : SpaceOperations<T>>  {
+    operator fun C.invoke(arg: T): T
+}
+
+/**
+ * A suspendable univariate function defined in algebraic context
+ */
+interface USFunction<T, C : SpaceOperations<T>> {
+    suspend operator fun C.invoke(arg: T): T
+}
+
+suspend fun USFunction<Double, RealField>.invoke(arg: Double) = RealField.invoke(arg)
+
+
+interface MFunction<T, C : SpaceOperations<T>> {
+    /**
+     * The input dimension of the function
+     */
+    val dimension: UInt
+
+    operator fun C.invoke(vararg args: T): T
+}
+
+/**
+ * A suspendable multivariate (N->1) function defined on algebraic context
+ */
+interface MSFunction<T, C : SpaceOperations<T>> {
+    /**
+     * The input dimension of the function
+     */
+    val dimension: UInt
+
+    suspend operator fun C.invoke(vararg args: T): T
+}
+
+suspend fun MSFunction<Double, RealField>.invoke(args: DoubleArray) = RealField.invoke(*args.toTypedArray())
+@JvmName("varargInvoke")
+suspend fun MSFunction<Double, RealField>.invoke(vararg args: Double) = RealField.invoke(*args.toTypedArray())
+
+/**
+ * A suspendable parametric function with parameter
+ */
+interface PSFunction<T, P, C : SpaceOperations<T>> {
+    suspend operator fun C.invoke(arg: T, parameter: P): T
+}
diff --git a/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/Interpolator.kt b/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/Interpolator.kt
new file mode 100644
index 000000000..0b1ca7795
--- /dev/null
+++ b/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/Interpolator.kt
@@ -0,0 +1,7 @@
+package scientifik.kmath.interpolation
+
+import scientifik.kmath.functions.MathFunction
+
+interface Interpolator<X, Y> {
+    fun interpolate(points: Collection<Pair<X, Y>>): MathFunction<X, *, Y>
+}
\ No newline at end of file
diff --git a/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/LinearInterpolator.kt b/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/LinearInterpolator.kt
new file mode 100644
index 000000000..4db9da7b6
--- /dev/null
+++ b/kmath-functions/src/commonMain/kotlin/scientifik/kmath/interpolation/LinearInterpolator.kt
@@ -0,0 +1,4 @@
+package scientifik.kmath.interpolation
+
+class LinearInterpolator {
+}
\ No newline at end of file
diff --git a/kmath-functions/src/commonTest/kotlin/scientifik/kmath/interpolation/LinearInterpolatorTest.kt b/kmath-functions/src/commonTest/kotlin/scientifik/kmath/interpolation/LinearInterpolatorTest.kt
new file mode 100644
index 000000000..34202b388
--- /dev/null
+++ b/kmath-functions/src/commonTest/kotlin/scientifik/kmath/interpolation/LinearInterpolatorTest.kt
@@ -0,0 +1,5 @@
+package scientifik.kmath.interpolation
+
+import org.junit.Assert.*
+
+class LinearInterpolatorTest
\ No newline at end of file