From 5297b7162a0630e2e5b1459fa665c9f3b1eb532a Mon Sep 17 00:00:00 2001
From: Rasmus Munk Larsen <rmlarsen@google.com>
Date: Wed, 24 Feb 2021 17:49:20 -0800
Subject: Make it possible to specify NaN propagation strategy for
 maxCoeff/minCoeff reductions.

---
 test/array_cwise.cpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test')

diff --git a/test/array_cwise.cpp b/test/array_cwise.cpp
index 7f7e44f89..92abf6968 100644
--- a/test/array_cwise.cpp
+++ b/test/array_cwise.cpp
@@ -610,6 +610,20 @@ template<typename ArrayType> void min_max(const ArrayType& m)
   VERIFY_IS_APPROX(ArrayType::Constant(rows,cols, maxM1), (m1.max)( maxM1));
   VERIFY_IS_APPROX(m1, (m1.max)( minM1));
 
+
+  // min/max with various NaN propagation options.
+  if (m1.size() > 1 && !NumTraits<Scalar>::IsInteger) {
+    m1(0,0) = std::numeric_limits<Scalar>::quiet_NaN();
+    maxM1 = m1.template maxCoeff<PropagateNaN>();
+    minM1 = m1.template minCoeff<PropagateNaN>();
+    VERIFY((numext::isnan)(maxM1));
+    VERIFY((numext::isnan)(minM1));
+
+    maxM1 = m1.template maxCoeff<PropagateNumbers>();
+    minM1 = m1.template minCoeff<PropagateNumbers>();
+    VERIFY(!(numext::isnan)(maxM1));
+    VERIFY(!(numext::isnan)(minM1));
+  }
 }
 
 EIGEN_DECLARE_TEST(array_cwise)
-- 
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