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diff --git a/include/__math/rounding_functions.h b/include/__math/rounding_functions.h
index 29e42fd..7943b6f 100644
--- a/include/__math/rounding_functions.h
+++ b/include/__math/rounding_functions.h
@@ -204,7 +204,7 @@ _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double rint(_A1 __x) _NOEXCEP
// round
-_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float round(float __x) _NOEXCEPT { return __builtin_round(__x); }
+_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float round(float __x) _NOEXCEPT { return __builtin_roundf(__x); }
template <class = int>
_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI double round(double __x) _NOEXCEPT {
@@ -222,7 +222,7 @@ _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double round(_A1 __x) _NOEXCE
// trunc
-_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float trunc(float __x) _NOEXCEPT { return __builtin_trunc(__x); }
+_LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float trunc(float __x) _NOEXCEPT { return __builtin_truncf(__x); }
template <class = int>
_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI double trunc(double __x) _NOEXCEPT {
diff --git a/include/math.h b/include/math.h
index b068ea3..5bde46a 100644
--- a/include/math.h
+++ b/include/math.h
@@ -290,6 +290,9 @@ float truncf(float x);
long double truncl(long double x);
*/
+#ifdef __CUDACC__
+#include <math_cuda.h>
+#else
#include <__config>
@@ -504,6 +507,8 @@ using std::__math::trunc;
#endif // __cplusplus
+#endif // __CUDACC__
+
#else // _LIBCPP_MATH_H
// This include lives outside the header guard in order to support an MSVC
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