add log functions

src/main/scala/com/snowflake/snowpark/functions.scala

@@ -3312,6 +3312,62 @@ object functions {
   def last(c: Column): Column =
     builtin("LAST_VALUE")(c)
 
+  /**
+   * Computes the logarithm of the given value in base 10.
+   * Example
+   * {{{
+   *  val df = session.createDataFrame(Seq(100)).toDF("a")
+   *  df.select(log10(col("a"))).show()
+   *
+   * -----------
+   * |"LOG10"  |
+   * -----------
+   * |2.0      |
+   * -----------
+   * }}}
+   *
+   * @since 1.14.0
+   * @param c Column to apply logarithm operation
+   * @return log10 of the given column
+   */
+  def log10(c: Column): Column = builtin("LOG")(10, c)
+
+  /**
+   * Computes the logarithm of the given column in base 10.
+   * Example
+   * {{{
+   *  val df = session.createDataFrame(Seq(100)).toDF("a")
+   *  df.select(log10("a"))).show()
+   * -----------
+   * |"LOG10"  |
+   * -----------
+   * |2.0      |
+   * -----------
+   *
+   * }}}
+   *
+   * @since 1.14.0
+   * @param columnName Column to apply logarithm operation
+   * @return log10 of the given column
+   */
+  def log10(columnName: String): Column = builtin("LOG")(10, col(columnName))
+
+  /**
+   * Computes the natural logarithm of the given value plus one.
+   * @since 1.14.0
+   * @param c the value to use
+   * @return the natural logarithm of the given value plus one.
+   */
+  def log1p(c: Column): Column = callBuiltin("ln", lit(1) + c)
+
+  /**
+   * Computes the natural logarithm of the given value plus one.
+   * @since 1.14.0
+   * @param columnName the value to use
+   * @return the natural logarithm of the given value plus one.
+   */
+  def log1p(columnName: String): Column = callBuiltin("ln", lit(1) + col(columnName))
+
   /**
    * Invokes a built-in snowflake function with the specified name and arguments.
    * Arguments can be of two types

src/test/scala/com/snowflake/snowpark_test/FunctionSuite.scala

@@ -2233,7 +2233,6 @@ trait FunctionSuite extends TestData {
   }
 
   test("last function") {
-
     val input =
       Seq((5, "a", 10), (5, "b", 20), (3, "d", 15), (3, "e", 40)).toDF("grade", "name", "score")
     val window = Window.partitionBy(col("grade")).orderBy(col("score").desc)
@@ -2245,6 +2244,48 @@ trait FunctionSuite extends TestData {
       sort = false)
   }
 
+  test("log10 Column function") {
+    val input = session.createDataFrame(Seq(100)).toDF("a")
+    val expected = Seq(2.0).toDF("log10")
+
+    checkAnswer(
+      input.select(log10(col("a")).as("log10")),
+      expected,
+      sort = false)
+  }
+
+  test("log10 String function") {
+    val input = session.createDataFrame(Seq("100")).toDF("a")
+    val expected = Seq(2.0).toDF("log10")
+
+    checkAnswer(
+      input.select(log10("a").as("log10")),
+      expected,
+      sort = false)
+  }
+
+  test("log1p Column function") {
+    val input = session.createDataFrame(Seq(100)).toDF("a")
+
+    input.select(log1p(col("a"))).show()
+//    val expected = Seq(2.0).toDF("log10")
+//
+//    checkAnswer(
+//      input.select(log10(col("a")).as("log10")),
+//      expected,
+//      sort = false)
+  }
+//
+//  test("log1p String function") {
+//    val input = session.createDataFrame(Seq("100")).toDF("a")
+//    val expected = Seq(2.0).toDF("log10")
+//
+//    checkAnswer(
+//      input.select(log10("a").as("log10")),
+//      expected,
+//      sort = false)
+//  }
+
 }
 
 class EagerFunctionSuite extends FunctionSuite with EagerSession