From 71a07bdf861c922cef4f828a7342febfc14fca0d Mon Sep 17 00:00:00 2001 From: Peter Munch Date: Mon, 9 Mar 2020 07:32:09 +0100 Subject: [PATCH] Step-69: add missing include cmath --- examples/step-69/step-69.cc | 3 +++ 1 file changed, 3 insertions(+) diff --git a/examples/step-69/step-69.cc b/examples/step-69/step-69.cc index fca2a20386..f0d4744c25 100644 --- a/examples/step-69/step-69.cc +++ b/examples/step-69/step-69.cc @@ -82,6 +82,9 @@ #include #include +// For std::isnan and std::isinf. +#include + // @sect3{Class template declarations} // // We begin our actual implementation by declaring all classes with their -- 2.39.5