From 194dde1a1b18d8f3bf1b241b858bcc76c0c08a7f Mon Sep 17 00:00:00 2001
From: Guido Kanschat <dr.guido.kanschat@gmail.com>
Date: Thu, 2 Jul 2015 23:03:24 +0200
Subject: [PATCH] Fix the problems on Mac with isnan and pow

---
 include/deal.II/lac/vector.templates.h | 8 ++++++++
 source/base/config.cc                  | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/deal.II/lac/vector.templates.h b/include/deal.II/lac/vector.templates.h
index 31f6bc50e7..45d39d3f40 100644
--- a/include/deal.II/lac/vector.templates.h
+++ b/include/deal.II/lac/vector.templates.h
@@ -1472,6 +1472,14 @@ Vector<Number>::lp_norm (const real_type p) const
 }
 
 
+template <>
+typename Vector<int>::real_type
+Vector<int>::lp_norm (const real_type) const
+{
+  Assert(false, ExcMessage("No lp norm for integer vectors"));
+  return -1;
+}
+
 
 template <typename Number>
 typename Vector<Number>::real_type
diff --git a/source/base/config.cc b/source/base/config.cc
index 82e0155759..265c04035c 100644
--- a/source/base/config.cc
+++ b/source/base/config.cc
@@ -25,7 +25,7 @@ namespace numbers
   bool is_finite (const double x)
   {
 #ifdef DEAL_II_HAVE_ISFINITE
-    return !isnan(x) && std::isfinite (x);
+    return !std::isnan(x) && std::isfinite (x);
 #else
     // Check against infinities. Note
     // that if x is a NaN, then both
-- 
2.39.5