diff --git a/include/boost/math/policies/error_handling.hpp b/include/boost/math/policies/error_handling.hpp
index ff9d7a97a..e28933b74 100644
--- a/include/boost/math/policies/error_handling.hpp
+++ b/include/boost/math/policies/error_handling.hpp
@@ -551,6 +551,16 @@ inline BOOST_GPU_ENABLED BOOST_MATH_CONSTEXPR long raise_rounding_error(
 {
    return  val > 0 ? LONG_MAX : LONG_MIN;
 }
+template <class T>
+inline BOOST_GPU_ENABLED BOOST_MATH_CONSTEXPR long long raise_rounding_error(
+   const char*,
+   const char*,
+   const T& val,
+   const long long&,
+   const  ::boost::math::policies::rounding_error< ::boost::math::policies::ignore_error>&) BOOST_MATH_NOEXCEPT(T)
+{
+   return  val > 0 ? LLONG_MAX : LLONG_MIN;
+}
 #endif
 
 template <class T, class TargetType>
diff --git a/include/boost/math/special_functions/detail/round_fwd.hpp b/include/boost/math/special_functions/detail/round_fwd.hpp
index dd97dc520..cf58793f9 100644
--- a/include/boost/math/special_functions/detail/round_fwd.hpp
+++ b/include/boost/math/special_functions/detail/round_fwd.hpp
@@ -39,40 +39,40 @@ namespace boost
    BOOST_GPU_ENABLED boost::long_long_type lltrunc(const T& v);
 #endif
    template <class T, class Policy>
-   typename tools::promote_args<T>::type round(const T& v, const Policy& pol);
+   BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v, const Policy& pol);
    template <class T>
-   typename tools::promote_args<T>::type round(const T& v);
+   BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v);
    template <class T, class Policy>
-   int iround(const T& v, const Policy& pol);
+   BOOST_GPU_ENABLED int iround(const T& v, const Policy& pol);
    template <class T>
-   int iround(const T& v);
+   BOOST_GPU_ENABLED int iround(const T& v);
    template <class T, class Policy>
-   long lround(const T& v, const Policy& pol);
+   BOOST_GPU_ENABLED long lround(const T& v, const Policy& pol);
    template <class T>
-   long lround(const T& v);
+   BOOST_GPU_ENABLED long lround(const T& v);
 #ifdef BOOST_HAS_LONG_LONG
    template <class T, class Policy>
-   boost::long_long_type llround(const T& v, const Policy& pol);
+   BOOST_GPU_ENABLED boost::long_long_type llround(const T& v, const Policy& pol);
    template <class T>
-   boost::long_long_type llround(const T& v);
+   BOOST_GPU_ENABLED boost::long_long_type llround(const T& v);
 #endif
    template <class T, class Policy>
-   T modf(const T& v, T* ipart, const Policy& pol);
+   BOOST_GPU_ENABLED T modf(const T& v, T* ipart, const Policy& pol);
    template <class T>
-   T modf(const T& v, T* ipart);
+   BOOST_GPU_ENABLED T modf(const T& v, T* ipart);
    template <class T, class Policy>
-   T modf(const T& v, int* ipart, const Policy& pol);
+   BOOST_GPU_ENABLED T modf(const T& v, int* ipart, const Policy& pol);
    template <class T>
-   T modf(const T& v, int* ipart);
+   BOOST_GPU_ENABLED T modf(const T& v, int* ipart);
    template <class T, class Policy>
-   T modf(const T& v, long* ipart, const Policy& pol);
+   BOOST_GPU_ENABLED T modf(const T& v, long* ipart, const Policy& pol);
    template <class T>
-   T modf(const T& v, long* ipart);
+   BOOST_GPU_ENABLED T modf(const T& v, long* ipart);
 #ifdef BOOST_HAS_LONG_LONG
    template <class T, class Policy>
-   T modf(const T& v, boost::long_long_type* ipart, const Policy& pol);
+   BOOST_GPU_ENABLED T modf(const T& v, boost::long_long_type* ipart, const Policy& pol);
    template <class T>
-   T modf(const T& v, boost::long_long_type* ipart);
+   BOOST_GPU_ENABLED T modf(const T& v, boost::long_long_type* ipart);
 #endif
 
    }
diff --git a/include/boost/math/special_functions/modf.hpp b/include/boost/math/special_functions/modf.hpp
index 3ce74e7aa..20321664d 100644
--- a/include/boost/math/special_functions/modf.hpp
+++ b/include/boost/math/special_functions/modf.hpp
@@ -17,50 +17,50 @@
 namespace boost{ namespace math{
 
 template <class T, class Policy>
-inline T modf(const T& v, T* ipart, const Policy& pol)
+inline BOOST_GPU_ENABLED T modf(const T& v, T* ipart, const Policy& pol)
 {
    *ipart = trunc(v, pol);
    return v - *ipart;
 }
 template <class T>
-inline T modf(const T& v, T* ipart)
+inline BOOST_GPU_ENABLED T modf(const T& v, T* ipart)
 {
    return modf(v, ipart, policies::policy<>());
 }
 
 template <class T, class Policy>
-inline T modf(const T& v, int* ipart, const Policy& pol)
+inline BOOST_GPU_ENABLED T modf(const T& v, int* ipart, const Policy& pol)
 {
    *ipart = itrunc(v, pol);
    return v - *ipart;
 }
 template <class T>
-inline T modf(const T& v, int* ipart)
+inline BOOST_GPU_ENABLED T modf(const T& v, int* ipart)
 {
    return modf(v, ipart, policies::policy<>());
 }
 
 template <class T, class Policy>
-inline T modf(const T& v, long* ipart, const Policy& pol)
+inline BOOST_GPU_ENABLED T modf(const T& v, long* ipart, const Policy& pol)
 {
    *ipart = ltrunc(v, pol);
    return v - *ipart;
 }
 template <class T>
-inline T modf(const T& v, long* ipart)
+inline BOOST_GPU_ENABLED T modf(const T& v, long* ipart)
 {
    return modf(v, ipart, policies::policy<>());
 }
 
 #ifdef BOOST_HAS_LONG_LONG
 template <class T, class Policy>
-inline T modf(const T& v, boost::long_long_type* ipart, const Policy& pol)
+inline BOOST_GPU_ENABLED T modf(const T& v, boost::long_long_type* ipart, const Policy& pol)
 {
    *ipart = lltrunc(v, pol);
    return v - *ipart;
 }
 template <class T>
-inline T modf(const T& v, boost::long_long_type* ipart)
+inline BOOST_GPU_ENABLED T modf(const T& v, boost::long_long_type* ipart)
 {
    return modf(v, ipart, policies::policy<>());
 }
diff --git a/include/boost/math/special_functions/next.hpp b/include/boost/math/special_functions/next.hpp
index 9602bc769..1de352ba5 100644
--- a/include/boost/math/special_functions/next.hpp
+++ b/include/boost/math/special_functions/next.hpp
@@ -30,14 +30,14 @@ namespace boost{ namespace math{
 namespace detail{
 
 template <class T>
-inline T get_smallest_value(mpl::true_ const&)
+inline BOOST_GPU_ENABLED T get_smallest_value(mpl::true_ const&)
 {
    //
    // numeric_limits lies about denorms being present - particularly
    // when this can be turned on or off at runtime, as is the case
    // when using the SSE2 registers in DAZ or FTZ mode.
    //
-   static const T m = std::numeric_limits<T>::denorm_min();
+   BOOST_MATH_GPU_STATIC const T m = std::numeric_limits<T>::denorm_min();
 #ifdef BOOST_MATH_CHECK_SSE2
    return (_mm_getcsr() & (_MM_FLUSH_ZERO_ON | 0x40)) ? tools::min_value<T>() : m;;
 #else
@@ -46,15 +46,17 @@ inline T get_smallest_value(mpl::true_ const&)
 }
 
 template <class T>
-inline T get_smallest_value(mpl::false_ const&)
+inline BOOST_GPU_ENABLED T get_smallest_value(mpl::false_ const&)
 {
    return tools::min_value<T>();
 }
 
 template <class T>
-inline T get_smallest_value()
+inline BOOST_GPU_ENABLED T get_smallest_value()
 {
-#if defined(BOOST_MSVC) && (BOOST_MSVC <= 1310)
+#ifdef __CUDA_ARCH__
+   return get_smallest_value<T>(mpl::bool_<false>());
+#elif defined(BOOST_MSVC) && (BOOST_MSVC <= 1310)
    return get_smallest_value<T>(mpl::bool_<std::numeric_limits<T>::is_specialized && (std::numeric_limits<T>::has_denorm == 1)>());
 #else
    return get_smallest_value<T>(mpl::bool_<std::numeric_limits<T>::is_specialized && (std::numeric_limits<T>::has_denorm == std::denorm_present)>());
@@ -66,25 +68,25 @@ inline T get_smallest_value()
 // we calculate the value of the least-significant-bit:
 //
 template <class T>
-T get_min_shift_value();
+BOOST_GPU_ENABLED T get_min_shift_value();
 
 template <class T>
 struct min_shift_initializer
 {
    struct init
    {
-      init()
+      BOOST_GPU_ENABLED init()
       {
          do_init();
       }
-      static void do_init()
+      static BOOST_GPU_ENABLED void do_init()
       {
          get_min_shift_value<T>();
       }
-      void force_instantiate()const{}
+      BOOST_GPU_ENABLED void force_instantiate()const{}
    };
    static const init initializer;
-   static void force_instantiate()
+   static BOOST_GPU_ENABLED void force_instantiate()
    {
       initializer.force_instantiate();
    }
@@ -95,21 +97,21 @@ const typename min_shift_initializer<T>::init min_shift_initializer<T>::initiali
 
 
 template <class T>
-inline T get_min_shift_value()
+inline BOOST_GPU_ENABLED T get_min_shift_value()
 {
    BOOST_MATH_STD_USING
-   static const T val = ldexp(tools::min_value<T>(), tools::digits<T>() + 1);
+   BOOST_MATH_GPU_STATIC const T val = ldexp(tools::min_value<T>(), tools::digits<T>() + 1);
    min_shift_initializer<T>::force_instantiate();
 
    return val;
 }
 
 template <class T, class Policy>
-T float_next_imp(const T& val, const Policy& pol)
+BOOST_GPU_ENABLED T float_next_imp(const T& val, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    int expon;
-   static const char* function = "float_next<%1%>(%1%)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_next<%1%>(%1%)";
 
    int fpclass = (boost::math::fpclassify)(val);
 
@@ -149,7 +151,7 @@ T float_next_imp(const T& val, const Policy& pol)
 }
 
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type float_next(const T& val, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_next(const T& val, const Policy& pol)
 {
    typedef typename tools::promote_args<T>::type result_type;
    return detail::float_next_imp(static_cast<result_type>(val), pol);
@@ -164,7 +166,7 @@ inline typename tools::promote_args<T>::type float_next(const T& val, const Poli
 template <class Policy>
 inline double float_next(const double& val, const Policy& pol)
 {
-   static const char* function = "float_next<%1%>(%1%)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_next<%1%>(%1%)";
 
    if(!(boost::math::isfinite)(val) && (val > 0))
       return policies::raise_domain_error<double>(
@@ -179,7 +181,7 @@ inline double float_next(const double& val, const Policy& pol)
 #endif
 
 template <class T>
-inline typename tools::promote_args<T>::type float_next(const T& val)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_next(const T& val)
 {
    return float_next(val, policies::policy<>());
 }
@@ -187,11 +189,11 @@ inline typename tools::promote_args<T>::type float_next(const T& val)
 namespace detail{
 
 template <class T, class Policy>
-T float_prior_imp(const T& val, const Policy& pol)
+BOOST_GPU_ENABLED T float_prior_imp(const T& val, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    int expon;
-   static const char* function = "float_prior<%1%>(%1%)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_prior<%1%>(%1%)";
 
    int fpclass = (boost::math::fpclassify)(val);
 
@@ -232,7 +234,7 @@ T float_prior_imp(const T& val, const Policy& pol)
 }
 
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type float_prior(const T& val, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_prior(const T& val, const Policy& pol)
 {
    typedef typename tools::promote_args<T>::type result_type;
    return detail::float_prior_imp(static_cast<result_type>(val), pol);
@@ -247,7 +249,7 @@ inline typename tools::promote_args<T>::type float_prior(const T& val, const Pol
 template <class Policy>
 inline double float_prior(const double& val, const Policy& pol)
 {
-   static const char* function = "float_prior<%1%>(%1%)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_prior<%1%>(%1%)";
 
    if(!(boost::math::isfinite)(val) && (val < 0))
       return policies::raise_domain_error<double>(
@@ -262,20 +264,20 @@ inline double float_prior(const double& val, const Policy& pol)
 #endif
 
 template <class T>
-inline typename tools::promote_args<T>::type float_prior(const T& val)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_prior(const T& val)
 {
    return float_prior(val, policies::policy<>());
 }
 
 template <class T, class U, class Policy>
-inline typename tools::promote_args<T, U>::type nextafter(const T& val, const U& direction, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T, U>::type nextafter(const T& val, const U& direction, const Policy& pol)
 {
    typedef typename tools::promote_args<T, U>::type result_type;
    return val < direction ? boost::math::float_next<result_type>(val, pol) : val == direction ? val : boost::math::float_prior<result_type>(val, pol);
 }
 
 template <class T, class U>
-inline typename tools::promote_args<T, U>::type nextafter(const T& val, const U& direction)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T, U>::type nextafter(const T& val, const U& direction)
 {
    return nextafter(val, direction, policies::policy<>());
 }
@@ -283,13 +285,13 @@ inline typename tools::promote_args<T, U>::type nextafter(const T& val, const U&
 namespace detail{
 
 template <class T, class Policy>
-T float_distance_imp(const T& a, const T& b, const Policy& pol)
+BOOST_GPU_ENABLED T float_distance_imp(const T& a, const T& b, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    //
    // Error handling:
    //
-   static const char* function = "float_distance<%1%>(%1%, %1%)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_distance<%1%>(%1%, %1%)";
    if(!(boost::math::isfinite)(a))
       return policies::raise_domain_error<T>(
          function,
@@ -384,14 +386,14 @@ T float_distance_imp(const T& a, const T& b, const Policy& pol)
 }
 
 template <class T, class U, class Policy>
-inline typename tools::promote_args<T, U>::type float_distance(const T& a, const U& b, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T, U>::type float_distance(const T& a, const U& b, const Policy& pol)
 {
    typedef typename tools::promote_args<T, U>::type result_type;
    return detail::float_distance_imp(static_cast<result_type>(a), static_cast<result_type>(b), pol);
 }
 
 template <class T, class U>
-typename tools::promote_args<T, U>::type float_distance(const T& a, const U& b)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T, U>::type float_distance(const T& a, const U& b)
 {
    return boost::math::float_distance(a, b, policies::policy<>());
 }
@@ -399,13 +401,13 @@ typename tools::promote_args<T, U>::type float_distance(const T& a, const U& b)
 namespace detail{
 
 template <class T, class Policy>
-T float_advance_imp(T val, int distance, const Policy& pol)
+BOOST_GPU_ENABLED T float_advance_imp(T val, int distance, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    //
    // Error handling:
    //
-   static const char* function = "float_advance<%1%>(%1%, int)";
+   BOOST_MATH_GPU_STATIC const char* function = "float_advance<%1%>(%1%, int)";
 
    int fpclass = (boost::math::fpclassify)(val);
 
@@ -482,14 +484,14 @@ T float_advance_imp(T val, int distance, const Policy& pol)
 }
 
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type float_advance(T val, int distance, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_advance(T val, int distance, const Policy& pol)
 {
    typedef typename tools::promote_args<T>::type result_type;
    return detail::float_advance_imp(static_cast<result_type>(val), distance, pol);
 }
 
 template <class T>
-inline typename tools::promote_args<T>::type float_advance(const T& val, int distance)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type float_advance(const T& val, int distance)
 {
    return boost::math::float_advance(val, distance, policies::policy<>());
 }
diff --git a/include/boost/math/special_functions/round.hpp b/include/boost/math/special_functions/round.hpp
index e21f7185d..cb5990a67 100644
--- a/include/boost/math/special_functions/round.hpp
+++ b/include/boost/math/special_functions/round.hpp
@@ -20,7 +20,7 @@ namespace boost{ namespace math{
 namespace detail{
 
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type round(const T& v, const Policy& pol, const mpl::false_)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v, const Policy& pol, const mpl::false_)
 {
    BOOST_MATH_STD_USING
       typedef typename tools::promote_args<T>::type result_type;
@@ -52,7 +52,7 @@ inline typename tools::promote_args<T>::type round(const T& v, const Policy& pol
    }
 }
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type round(const T& v, const Policy&, const mpl::true_)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v, const Policy&, const mpl::true_)
 {
    return v;
 }
@@ -60,12 +60,12 @@ inline typename tools::promote_args<T>::type round(const T& v, const Policy&, co
 } // namespace detail
 
 template <class T, class Policy>
-inline typename tools::promote_args<T>::type round(const T& v, const Policy& pol)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v, const Policy& pol)
 {
    return detail::round(v, pol, mpl::bool_<detail::is_integer_for_rounding<T>::value>());
 }
 template <class T>
-inline typename tools::promote_args<T>::type round(const T& v)
+inline BOOST_GPU_ENABLED typename tools::promote_args<T>::type round(const T& v)
 {
    return round(v, policies::policy<>());
 }
@@ -79,31 +79,39 @@ inline typename tools::promote_args<T>::type round(const T& v)
 // dependent lookup.  See our concept archetypes for examples.
 //
 template <class T, class Policy>
-inline int iround(const T& v, const Policy& pol)
+inline BOOST_GPU_ENABLED int iround(const T& v, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    T r = boost::math::round(v, pol);
+#ifdef __CUDA_ARCH__
+   if((r > INT_MAX) || (r < INT_MIN))
+#else
    if((r > (std::numeric_limits<int>::max)()) || (r < (std::numeric_limits<int>::min)()))
+#endif
       return static_cast<int>(policies::raise_rounding_error("boost::math::iround<%1%>(%1%)", 0, v, 0, pol));
    return static_cast<int>(r);
 }
 template <class T>
-inline int iround(const T& v)
+inline BOOST_GPU_ENABLED int iround(const T& v)
 {
    return iround(v, policies::policy<>());
 }
 
 template <class T, class Policy>
-inline long lround(const T& v, const Policy& pol)
+inline BOOST_GPU_ENABLED long lround(const T& v, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    T r = boost::math::round(v, pol);
+#ifdef __CUDA_ARCH__
+   if((r > LONG_MAX) || (r < LONG_MIN))
+#else
    if((r > (std::numeric_limits<long>::max)()) || (r < (std::numeric_limits<long>::min)()))
+#endif
       return static_cast<long int>(policies::raise_rounding_error("boost::math::lround<%1%>(%1%)", 0, v, 0L, pol));
    return static_cast<long int>(r);
 }
 template <class T>
-inline long lround(const T& v)
+inline BOOST_GPU_ENABLED long lround(const T& v)
 {
    return lround(v, policies::policy<>());
 }
@@ -111,16 +119,20 @@ inline long lround(const T& v)
 #ifdef BOOST_HAS_LONG_LONG
 
 template <class T, class Policy>
-inline boost::long_long_type llround(const T& v, const Policy& pol)
+inline BOOST_GPU_ENABLED boost::long_long_type llround(const T& v, const Policy& pol)
 {
    BOOST_MATH_STD_USING
    T r = boost::math::round(v, pol);
+#ifdef __CUDA_ARCH__
+   if((r > LLONG_MAX) || (r < LLONG_MIN))
+#else
    if((r > (std::numeric_limits<boost::long_long_type>::max)()) || (r < (std::numeric_limits<boost::long_long_type>::min)()))
+#endif
       return static_cast<boost::long_long_type>(policies::raise_rounding_error("boost::math::llround<%1%>(%1%)", 0, v, static_cast<boost::long_long_type>(0), pol));
    return static_cast<boost::long_long_type>(r);
 }
 template <class T>
-inline boost::long_long_type llround(const T& v)
+inline BOOST_GPU_ENABLED boost::long_long_type llround(const T& v)
 {
    return llround(v, policies::policy<>());
 }
diff --git a/include/boost/math/special_functions/trunc.hpp b/include/boost/math/special_functions/trunc.hpp
index 5913a4e7d..4adefaab3 100644
--- a/include/boost/math/special_functions/trunc.hpp
+++ b/include/boost/math/special_functions/trunc.hpp
@@ -81,7 +81,7 @@ inline BOOST_GPU_ENABLED long ltrunc(const T& v, const Policy& pol)
    typedef typename tools::promote_args<T>::type result_type;
    result_type r = boost::math::trunc(v, pol);
 #ifdef __CUDA_ARCH__
-   if((r > LONG_MAX) || (r < LONG_LIN))
+   if((r > LONG_MAX) || (r < LONG_MIN))
 #else
    if((r > (std::numeric_limits<long>::max)()) || (r < (std::numeric_limits<long>::min)()))
 #endif
@@ -102,7 +102,11 @@ inline BOOST_GPU_ENABLED boost::long_long_type lltrunc(const T& v, const Policy&
    BOOST_MATH_STD_USING
    typedef typename tools::promote_args<T>::type result_type;
    result_type r = boost::math::trunc(v, pol);
+#ifdef __CUDA_ARCH__
+   if((r > LLONG_MAX) || (r < LLONG_MIN))
+#else
    if((r > (std::numeric_limits<boost::long_long_type>::max)()) || (r < (std::numeric_limits<boost::long_long_type>::min)()))
+#endif
       return static_cast<boost::long_long_type>(policies::raise_rounding_error("boost::math::lltrunc<%1%>(%1%)", 0, v, static_cast<boost::long_long_type>(0), pol));
    return static_cast<boost::long_long_type>(r);
 }
diff --git a/test/cuda/changesign_double.cu b/test/cuda/changesign_double.cu
new file mode 100644
index 000000000..afa17176f
--- /dev/null
+++ b/test/cuda/changesign_double.cu
@@ -0,0 +1,111 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, float_type *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::changesign(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<float_type> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        }
+        if(i % 1)
+           h_A[i] = -h_A[i];
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<float_type> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::changesign(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/copysign_double.cu b/test/cuda/copysign_double.cu
new file mode 100644
index 000000000..acb8adeb2
--- /dev/null
+++ b/test/cuda/copysign_double.cu
@@ -0,0 +1,111 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, float_type *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::copysign(in[i], float_type(-1.0));
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<float_type> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        }
+        if(i % 1)
+           h_A[i] = -h_A[i];
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<float_type> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::copysign(h_A[i], float_type(-1.0)));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/fpclassify_double.cu b/test/cuda/fpclassify_double.cu
new file mode 100644
index 000000000..12c7e2990
--- /dev/null
+++ b/test/cuda/fpclassify_double.cu
@@ -0,0 +1,112 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, int *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::fpclassify(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<int> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<int> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::fpclassify(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/isfinite_double.cu b/test/cuda/isfinite_double.cu
new file mode 100644
index 000000000..f5be9e0d4
--- /dev/null
+++ b/test/cuda/isfinite_double.cu
@@ -0,0 +1,112 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, bool *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::isfinite(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<bool> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<bool> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::isfinite(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/isinf_double.cu b/test/cuda/isinf_double.cu
new file mode 100644
index 000000000..81f45b1ff
--- /dev/null
+++ b/test/cuda/isinf_double.cu
@@ -0,0 +1,112 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, bool *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::isinf(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<bool> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<bool> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::isinf(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/isnan_double.cu b/test/cuda/isnan_double.cu
new file mode 100644
index 000000000..7baa7480d
--- /dev/null
+++ b/test/cuda/isnan_double.cu
@@ -0,0 +1,112 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, bool *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::isnan(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<bool> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<bool> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::isnan(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/isnormal_double.cu b/test/cuda/isnormal_double.cu
new file mode 100644
index 000000000..7903a336d
--- /dev/null
+++ b/test/cuda/isnormal_double.cu
@@ -0,0 +1,112 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, bool *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::isnormal(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<bool> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<bool> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::isnormal(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/modf_double.cu b/test/cuda/modf_double.cu
new file mode 100644
index 000000000..9a8cff2aa
--- /dev/null
+++ b/test/cuda/modf_double.cu
@@ -0,0 +1,102 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <boost/math/special_functions/modf.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, float_type *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    float_type fract;
+    int i_part;
+    long l_part;
+    long long ll_part;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::modf(in[i], &fract) + boost::math::modf(in[i], &i_part) + boost::math::modf(in[i], &l_part) + boost::math::modf(in[i], &ll_part);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<float_type> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<float_type> results;
+    results.reserve(numElements);
+    w.reset();
+    float_type fract;
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(4 * boost::math::modf(h_A[i], &fract));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (boost::math::epsilon_difference(h_C[i], results[i]) > 10)
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/round_double.cu b/test/cuda/round_double.cu
new file mode 100644
index 000000000..1fe0ecea9
--- /dev/null
+++ b/test/cuda/round_double.cu
@@ -0,0 +1,96 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <boost/math/special_functions/round.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, float_type *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::round(in[i]) + boost::math::iround(in[i]) + boost::math::lround(in[i]) + boost::math::llround(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<float_type> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<float_type> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(4 * boost::math::round(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (boost::math::epsilon_difference(h_C[i], results[i]) > 10)
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/sign_double.cu b/test/cuda/sign_double.cu
new file mode 100644
index 000000000..64b78db57
--- /dev/null
+++ b/test/cuda/sign_double.cu
@@ -0,0 +1,114 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, int *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::sign(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<int> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+        if(i % 1)
+           h_A[i] = -h_A[i];
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<int> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::sign(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/signbit_double.cu b/test/cuda/signbit_double.cu
new file mode 100644
index 000000000..a704575a7
--- /dev/null
+++ b/test/cuda/signbit_double.cu
@@ -0,0 +1,114 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, int *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::signbit(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<int> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+        switch(i % 55)
+        {
+        case 1:
+           h_A[i] = 0;
+           break;
+        case 2:
+           h_A[i] = std::numeric_limits<float_type>::infinity();
+           break;
+        case 3:
+           h_A[i] = -std::numeric_limits<float_type>::infinity();
+           break;
+        case 4:
+           h_A[i] = std::numeric_limits<float_type>::quiet_NaN();
+           break;
+        }
+        if(i % 1)
+           h_A[i] = -h_A[i];
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<int> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(boost::math::signbit(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (h_C[i] != results[i])
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+
diff --git a/test/cuda/trunc_double.cu b/test/cuda/trunc_double.cu
new file mode 100644
index 000000000..680175883
--- /dev/null
+++ b/test/cuda/trunc_double.cu
@@ -0,0 +1,96 @@
+//  Copyright John Maddock 2016.
+//  Use, modification and distribution are subject to the
+//  Boost Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <boost/math/special_functions/trunc.hpp>
+#include <boost/math/special_functions/relative_difference.hpp>
+#include "cuda_managed_ptr.hpp"
+#include "stopwatch.hpp"
+
+// For the CUDA runtime routines (prefixed with "cuda_")
+#include <cuda_runtime.h>
+
+typedef double float_type;
+
+/**
+ * CUDA Kernel Device code
+ *
+ */
+__global__ void cuda_test(const float_type *in, float_type *out, int numElements)
+{
+    using std::cos;
+    int i = blockDim.x * blockIdx.x + threadIdx.x;
+
+    if (i < numElements)
+    {
+        out[i] = boost::math::trunc(in[i]) + boost::math::itrunc(in[i]) + boost::math::ltrunc(in[i]) + boost::math::lltrunc(in[i]);
+    }
+}
+
+/**
+ * Host main routine
+ */
+int main(void)
+{
+    // Error code to check return values for CUDA calls
+    cudaError_t err = cudaSuccess;
+
+    // Print the vector length to be used, and compute its size
+    int numElements = 50000;
+    std::cout << "[Vector addition of " << numElements << " elements]" << std::endl;
+
+    // Allocate the managed input vector A
+    cuda_managed_ptr<float_type> h_A(numElements);
+
+    // Allocate the managed output vector C
+    cuda_managed_ptr<float_type> h_C(numElements);
+
+    // Initialize the input vectors
+    for (int i = 0; i < numElements; ++i)
+    {
+        h_A[i] = rand()/(float_type)RAND_MAX;
+    }
+
+    // Launch the Vector Add CUDA Kernel
+    int threadsPerBlock = 1024;
+    int blocksPerGrid =(numElements + threadsPerBlock - 1) / threadsPerBlock;
+    std::cout << "CUDA kernel launch with " << blocksPerGrid << " blocks of " << threadsPerBlock << " threads" << std::endl;
+    
+    watch w;
+    cuda_test<<<blocksPerGrid, threadsPerBlock>>>(h_A.get(), h_C.get(), numElements);
+    std::cout << "CUDA kernal done in " << w.elapsed() << "s" << std::endl;
+    
+    err = cudaGetLastError();
+
+    if (err != cudaSuccess)
+    {
+        std::cerr << "Failed to launch vectorAdd kernel (error code " << cudaGetErrorString(err) << ")!" << std::endl;
+        return EXIT_FAILURE;
+    }
+
+    // Verify that the result vector is correct
+    std::vector<float_type> results;
+    results.reserve(numElements);
+    w.reset();
+    for(int i = 0; i < numElements; ++i)
+       results.push_back(4 * boost::math::trunc(h_A[i]));
+    double t = w.elapsed();
+    // check the results
+    for(int i = 0; i < numElements; ++i)
+    {
+        if (boost::math::epsilon_difference(h_C[i], results[i]) > 10)
+        {
+            std::cerr << "Result verification failed at element " << i << "!" << std::endl;
+            return EXIT_FAILURE;
+        }
+    }
+
+    std::cout << "Test PASSED with calculation time: " << t << "s" << std::endl;
+    std::cout << "Done\n";
+
+    return 0;
+}
+