Index: clang/lib/Headers/__clang_cuda_cmath.h
===================================================================
--- clang/lib/Headers/__clang_cuda_cmath.h
+++ clang/lib/Headers/__clang_cuda_cmath.h
@@ -78,13 +78,16 @@
 #ifndef _MSC_VER
 __DEVICE__ bool isinf(float __x) { return ::__isinff(__x); }
 __DEVICE__ bool isinf(double __x) { return ::__isinf(__x); }
+__DEVICE__ bool isinf(long double __x) { return ::__isinfl(__x); }
 __DEVICE__ bool isfinite(float __x) { return ::__finitef(__x); }
 // For inscrutable reasons, __finite(), the double-precision version of
 // __finitef, does not exist when compiling for MacOS.  __isfinited is available
 // everywhere and is just as good.
 __DEVICE__ bool isfinite(double __x) { return ::__isfinited(__x); }
+__DEVICE__ bool isfinite(long double __x) { return ::__finitel(__x); }
 __DEVICE__ bool isnan(float __x) { return ::__isnanf(__x); }
 __DEVICE__ bool isnan(double __x) { return ::__isnan(__x); }
+__DEVICE__ bool isnan(long double __x) { return ::__isnanl(__x); }
 #endif
 
 __DEVICE__ bool isgreater(float __x, float __y) {
Index: clang/lib/Headers/__clang_cuda_device_functions.h
===================================================================
--- clang/lib/Headers/__clang_cuda_device_functions.h
+++ clang/lib/Headers/__clang_cuda_device_functions.h
@@ -237,6 +237,7 @@
 __DEVICE__ int __ffsll(long long __a) { return __nv_ffsll(__a); }
 __DEVICE__ int __finite(double __a) { return __nv_isfinited(__a); }
 __DEVICE__ int __finitef(float __a) { return __nv_finitef(__a); }
+__DEVICE__ int __finitel(long double __a);
 __DEVICE__ int __float2int_rd(float __a) { return __nv_float2int_rd(__a); }
 __DEVICE__ int __float2int_rn(float __a) { return __nv_float2int_rn(__a); }
 __DEVICE__ int __float2int_ru(float __a) { return __nv_float2int_ru(__a); }
@@ -445,8 +446,10 @@
 __DEVICE__ int __isfinited(double __a) { return __nv_isfinited(__a); }
 __DEVICE__ int __isinf(double __a) { return __nv_isinfd(__a); }
 __DEVICE__ int __isinff(float __a) { return __nv_isinff(__a); }
+__DEVICE__ int __isinfl(long double __a);
 __DEVICE__ int __isnan(double __a) { return __nv_isnand(__a); }
 __DEVICE__ int __isnanf(float __a) { return __nv_isnanf(__a); }
+__DEVICE__ int __isnanl(long double __a);
 __DEVICE__ double __ll2double_rd(long long __a) {
   return __nv_ll2double_rd(__a);
 }
Index: clang/lib/Headers/__clang_cuda_math_forward_declares.h
===================================================================
--- clang/lib/Headers/__clang_cuda_math_forward_declares.h
+++ clang/lib/Headers/__clang_cuda_math_forward_declares.h
@@ -98,12 +98,14 @@
 __DEVICE__ float hypot(float, float);
 __DEVICE__ int ilogb(double);
 __DEVICE__ int ilogb(float);
+__DEVICE__ bool isfinite(long double);
 __DEVICE__ bool isfinite(double);
 __DEVICE__ bool isfinite(float);
 __DEVICE__ bool isgreater(double, double);
 __DEVICE__ bool isgreaterequal(double, double);
 __DEVICE__ bool isgreaterequal(float, float);
 __DEVICE__ bool isgreater(float, float);
+__DEVICE__ bool isinf(long double);
 __DEVICE__ bool isinf(double);
 __DEVICE__ bool isinf(float);
 __DEVICE__ bool isless(double, double);
@@ -112,6 +114,7 @@
 __DEVICE__ bool isless(float, float);
 __DEVICE__ bool islessgreater(double, double);
 __DEVICE__ bool islessgreater(float, float);
+__DEVICE__ bool isnan(long double);
 __DEVICE__ bool isnan(double);
 __DEVICE__ bool isnan(float);
 __DEVICE__ bool isnormal(double);