Fix isfinite/isinf/isnan code snippets
diff --git a/doc/snippets/Cwise_isInf.cpp b/doc/snippets/Cwise_isInf.cpp
index beb6746..be79308 100644
--- a/doc/snippets/Cwise_isInf.cpp
+++ b/doc/snippets/Cwise_isInf.cpp
@@ -2,4 +2,4 @@
 v(1) *= 0.0/0.0;
 v(2) /= 0.0;
 cout << v << endl << endl;
-cout << isInf(v) << endl;
+cout << isinf(v) << endl;