Add dual-standalone test case

test/Jamfile.v2

@@ -893,6 +893,7 @@ test-suite mp :
    [ run polynomial_concept_check.cpp ]
 
    [ run issue893.cpp ]
+   [ run git_issue_1098.cpp ]
 ;
 
 test-suite misc :

test/git_issue_1098.cpp

@@ -0,0 +1,27 @@
+//  Copyright Matt Borland 2024.
+//  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)
+
+#define BOOST_MATH_STANDALONE
+#define BOOST_MP_STANDALONE
+
+#include <boost/config.hpp>
+#include <boost/math/distributions/uniform.hpp>
+#include <boost/multiprecision/cpp_bin_float.hpp>
+#include <type_traits>
+
+int main()
+{
+    using T = boost::multiprecision::cpp_bin_float_quad;
+    
+    // This macro should be available through MP standalone since it bundles config
+    BOOST_IF_CONSTEXPR (std::is_same<T, boost::multiprecision::cpp_bin_float_quad>::value)
+    {
+        boost::math::uniform_distribution<boost::multiprecision::cpp_bin_float_quad> d {0, 1};
+        const auto q = boost::math::quantile(d, T(0.5));
+        assert(q == T(0.5));
+    }
+
+    return 0;
+}