From b2221b18fdb48961c6eb5cf8bc81982c5a58feb3 Mon Sep 17 00:00:00 2001
From: NimaSarajpoor <nimasarajpoor@gmail.com>
Date: Mon, 24 Aug 2026 22:28:57 -0400
Subject: [PATCH 1/2] add branching logic to sdp func in core

---
 stumpy/core.py | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/stumpy/core.py b/stumpy/core.py
index 09fd80d8f..5db05b66d 100644
--- a/stumpy/core.py
+++ b/stumpy/core.py
@@ -665,7 +665,16 @@ def sliding_dot_product(Q, T):
     output : numpy.ndarray
         Sliding dot product between `Q` and `T`.
     """
-    return sdp._sliding_dot_product(Q, T)
+    if len(Q) == len(T):
+        func = np.dot
+    elif len(Q) <= 128:  # 2 ** 7
+        func = sdp._njit_sliding_dot_product
+    elif sdp.PYFFTW_IS_AVAILABLE:
+        func = sdp._pyfftw_sliding_dot_product
+    else:
+        func = sdp._sliding_dot_product
+
+    return func(Q, T)
 
 
 @njit(

From 545055729cfd4a2605a3e492d424d5c2ca4a8730 Mon Sep 17 00:00:00 2001
From: NimaSarajpoor <nimasarajpoor@gmail.com>
Date: Tue, 25 Aug 2026 01:15:29 -0400
Subject: [PATCH 2/2] add test function to improve coverage

---
 stumpy/config.py   |  2 ++
 stumpy/core.py     | 14 +++++++-------
 tests/test_core.py | 10 ++++++++++
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/stumpy/config.py b/stumpy/config.py
index f4378fbe6..e82d1bf31 100644
--- a/stumpy/config.py
+++ b/stumpy/config.py
@@ -17,6 +17,7 @@
     "STUMPY_MAX_P_NORM_DISTANCE": np.finfo(np.float64).max,
     "STUMPY_MAX_DISTANCE": np.sqrt(np.finfo(np.float64).max),
     "STUMPY_EXCL_ZONE_DENOM": 4,
+    "STUMPY_NJIT_SDP_Q_LENGTH": 128,  # 2 ** 7
     "STUMPY_FASTMATH_TRUE": True,
     "STUMPY_FASTMATH_FLAGS": {"nsz", "arcp", "contract", "afn", "reassoc"},
     "STUMPY_FASTMATH_FASTMATH._ADD_ASSOC": True,
@@ -38,6 +39,7 @@
 STUMPY_MAX_P_NORM_DISTANCE = _STUMPY_DEFAULTS["STUMPY_MAX_P_NORM_DISTANCE"]
 STUMPY_MAX_DISTANCE = _STUMPY_DEFAULTS["STUMPY_MAX_DISTANCE"]
 STUMPY_EXCL_ZONE_DENOM = _STUMPY_DEFAULTS["STUMPY_EXCL_ZONE_DENOM"]
+STUMPY_NJIT_SDP_Q_LENGTH = _STUMPY_DEFAULTS["STUMPY_NJIT_SDP_Q_LENGTH"]
 STUMPY_FASTMATH_TRUE = _STUMPY_DEFAULTS["STUMPY_FASTMATH_TRUE"]
 STUMPY_FASTMATH_FLAGS = _STUMPY_DEFAULTS["STUMPY_FASTMATH_FLAGS"]
 
diff --git a/stumpy/core.py b/stumpy/core.py
index 5db05b66d..601b68912 100644
--- a/stumpy/core.py
+++ b/stumpy/core.py
@@ -666,15 +666,15 @@ def sliding_dot_product(Q, T):
         Sliding dot product between `Q` and `T`.
     """
     if len(Q) == len(T):
-        func = np.dot
-    elif len(Q) <= 128:  # 2 ** 7
-        func = sdp._njit_sliding_dot_product
-    elif sdp.PYFFTW_IS_AVAILABLE:
-        func = sdp._pyfftw_sliding_dot_product
+        out = np.array([np.dot(Q, T)])
+    elif len(Q) <= config.STUMPY_NJIT_SDP_Q_LENGTH:
+        out = sdp._njit_sliding_dot_product(Q, T)
+    elif sdp.PYFFTW_IS_AVAILABLE:  # pragma: no cover
+        out = sdp._pyfftw_sliding_dot_product(Q, T)
     else:
-        func = sdp._sliding_dot_product
+        out = sdp._sliding_dot_product(Q, T)
 
-    return func(Q, T)
+    return out
 
 
 @njit(
diff --git a/tests/test_core.py b/tests/test_core.py
index 28589cfa3..c92339574 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -208,6 +208,16 @@ def test_sliding_dot_product(Q, T):
     npt.assert_allclose(cmp_mp, ref_mp, atol=1.5e-07)
 
 
+def test_sliding_dot_product_large_Q():
+    # Set len(T) > len(Q) > config.STUMPY_NJIT_SDP_Q_LENGTH,
+    # so that it triggers a certain code flow
+    Q = rng.RNG.rand(config.STUMPY_NJIT_SDP_Q_LENGTH + 1)
+    T = rng.RNG.rand(config.STUMPY_NJIT_SDP_Q_LENGTH + 2)
+    ref_mp = naive.rolling_window_dot_product(Q, T)
+    cmp_mp = core.sliding_dot_product(Q, T)
+    npt.assert_allclose(cmp_mp, ref_mp, atol=1.5e-07)
+
+
 def test_welford_nanvar():
     T = rng.RNG.rand(64)
     m = 10