From b61ae3d546ba4199dc3badf4bd89971d2d75e9df Mon Sep 17 00:00:00 2001
From: Adam Li <adam2392@gmail.com>
Date: Sat, 9 Mar 2024 22:47:53 -0500
Subject: [PATCH] Export shift_missing_values_to_left_if_required

Signed-off-by: Adam Li <adam2392@gmail.com>
---
 sklearn/tree/_splitter.pxd | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sklearn/tree/_splitter.pxd b/sklearn/tree/_splitter.pxd
index 601e6ac8f3202..041e9965a904b 100644
--- a/sklearn/tree/_splitter.pxd
+++ b/sklearn/tree/_splitter.pxd
@@ -140,3 +140,9 @@ cdef class Splitter(BaseSplitter):
         float64_t lower_bound,
         float64_t upper_bound
     ) noexcept nogil
+
+cdef void shift_missing_values_to_left_if_required(
+    SplitRecord* best,
+    intp_t[::1] samples,
+    intp_t end,
+) noexcept nogil