From fcb90e0f14c98ac8b181ee4ab0dacc9f2dbb5273 Mon Sep 17 00:00:00 2001
From: Warren Weckesser <warren.weckesser@gmail.com>
Date: Thu, 19 Aug 2021 11:06:33 -0400
Subject: [PATCH] MAINT: interpolate: Declare type for a Cython indexing
 variable.

Fixes the build warning:

warning: _bspl.pyx:449:36: Index should be typed for more efficient access
---
 scipy/interpolate/_bspl.pyx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/scipy/interpolate/_bspl.pyx b/scipy/interpolate/_bspl.pyx
index eff356d0e5cf..e02065e04858 100644
--- a/scipy/interpolate/_bspl.pyx
+++ b/scipy/interpolate/_bspl.pyx
@@ -439,6 +439,7 @@ def _make_design_matrix(const double[::1] x,
         ..., last row - x[-1]).
     """
     cdef:
+        cnp.npy_intp i
         cnp.npy_intp n = x.shape[0]
         cnp.npy_intp nt = t.shape[0]
         double[::1] wrk = np.empty(2*k+2, dtype=float)