Protect digamma tests behind a EIGEN_HAS_C99_MATH check.
diff --git a/test/array.cpp b/test/array.cpp
index 9366b73..96aef31 100644
--- a/test/array.cpp
+++ b/test/array.cpp
@@ -312,6 +312,7 @@
VERIFY_IS_APPROX(s1/m1, s1 * m1.inverse());
// check special functions (comparing against numpy implementation)
+#ifdef EIGEN_HAS_C99_MATH
if (!NumTraits<Scalar>::IsComplex) {
VERIFY_IS_APPROX(numext::digamma(Scalar(1)), RealScalar(-0.5772156649015329));
VERIFY_IS_APPROX(numext::digamma(Scalar(1.5)), RealScalar(0.03648997397857645));
@@ -323,6 +324,7 @@
VERIFY_IS_EQUAL(numext::digamma(Scalar(-1)),
std::numeric_limits<RealScalar>::infinity());
}
+#endif // EIGEN_HAS_C99_MATH
// check inplace transpose
m3 = m1;