MSVC compile warning

Author: RAMitchell

libcudacxx/include/cuda/std/__random/poisson_distribution.h

@@ -109,14 +109,14 @@ class poisson_distribution
 
   template <class _IntT,
             class _FloatT,
-            bool _FloatBigger = (numeric_limits<_FloatT>::digits > numeric_limits<_IntT>::digits),
-            int _Bits         = (numeric_limits<_IntT>::digits - numeric_limits<_FloatT>::digits)>
+            bool _FloatBigger = (numeric_limits<_FloatT>::digits > numeric_limits<_IntT>::digits)>
   [[nodiscard]] _CCCL_API static constexpr _IntT __max_representable_int_for_float() noexcept
   {
     static_assert(::cuda::std::is_floating_point<_FloatT>::value, "must be a floating point type");
     static_assert(::cuda::std::is_integral<_IntT>::value, "must be an integral type");
     static_assert(numeric_limits<_FloatT>::radix == 2, "FloatT has incorrect radix");
-    return _FloatBigger ? numeric_limits<_IntT>::max() : (numeric_limits<_IntT>::max() >> _Bits << _Bits);
+    constexpr int _bits = cuda::std::max(numeric_limits<_IntT>::digits - numeric_limits<_FloatT>::digits, 0);
+    return _FloatBigger ? numeric_limits<_IntT>::max() : (numeric_limits<_IntT>::max() >> _bits << _bits);
   }
 
   template <class _IntT, class _RealT>

libcudacxx/test/libcudacxx/std/random/distribution/poisson.pass.cpp

@@ -50,7 +50,7 @@ __host__ __device__ void test()
   using D                                    = cuda::std::poisson_distribution<T>;
   using P                                    = typename D::param_type;
   using G                                    = cuda::std::philox4x64;
-  cuda::std::array<P, 5> params              = {P(1.0), P(5.0), P(10.0), P(20.0), P(50.0)};
+  cuda::std::array<P, 3> params              = {P(1.0), P(20.0), P(50.0)};
   test_distribution<D, false, G, test_constexpr>(params, poisson_cdf<T>{});
 }