From 48876d11762be01b393a2b08a90d854cbba1a985 Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Wed, 10 Oct 2012 12:21:16 +0000
Subject: [PATCH] Fix for build failure when there are no long double
 functions. Fixes #7485.

[SVN r80932]
---
 src/tr1/nexttoward.cpp  | 4 ++++
 src/tr1/nexttowardf.cpp | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/tr1/nexttoward.cpp b/src/tr1/nexttoward.cpp
index 853b9e10e..7ce4e0abf 100644
--- a/src/tr1/nexttoward.cpp
+++ b/src/tr1/nexttoward.cpp
@@ -15,7 +15,11 @@ namespace boost{ namespace math{ namespace tr1{
 
 extern "C" double BOOST_MATH_TR1_DECL boost_nexttoward BOOST_PREVENT_MACRO_SUBSTITUTION(double x, long double y) BOOST_MATH_C99_THROW_SPEC
 {
+#ifdef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+   return  c_policies::nextafter BOOST_PREVENT_MACRO_SUBSTITUTION(x, (double)y);
+#else
    return  (double)c_policies::nextafter BOOST_PREVENT_MACRO_SUBSTITUTION((long double)x, y);
+#endif
 }
 
 }}}
diff --git a/src/tr1/nexttowardf.cpp b/src/tr1/nexttowardf.cpp
index a7da11ee0..ea7b83c5b 100644
--- a/src/tr1/nexttowardf.cpp
+++ b/src/tr1/nexttowardf.cpp
@@ -15,7 +15,11 @@ namespace boost{ namespace math{ namespace tr1{
 
 extern "C" float BOOST_MATH_TR1_DECL boost_nexttowardf BOOST_PREVENT_MACRO_SUBSTITUTION(float x, long double y) BOOST_MATH_C99_THROW_SPEC
 {
+#ifdef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+   return  (float)c_policies::nextafter BOOST_PREVENT_MACRO_SUBSTITUTION((double)x, (double)y);
+#else
    return  (float)c_policies::nextafter BOOST_PREVENT_MACRO_SUBSTITUTION((long double)x, y);
+#endif
 }
 
 }}}