Merge pull request #1102 from boostorg/1098

Add dual-standalone test case

Author: mborland

include/boost/math/special_functions/detail/fp_traits.hpp

@@ -34,16 +34,6 @@ With these techniques, the code could be simplified.
 #define BOOST_MATH_ENDIAN_BIG_BYTE BOOST_ENDIAN_BIG_BYTE
 #define BOOST_MATH_ENDIAN_LITTLE_BYTE BOOST_ENDIAN_LITTLE_BYTE
 
-#elif (__cplusplus >= 202002L || _MSVC_LANG >= 202002L)
-
-#if __has_include(<bit>)
-#include <bit>
-#define BOOST_MATH_ENDIAN_BIG_BYTE (std::endian::native == std::endian::big)
-#define BOOST_MATH_ENDIAN_LITTLE_BYTE (std::endian::native == std::endian::little)
-#else
-#error Missing <bit> header. Please disable standalone mode, and file an issue at https://github.com/boostorg/math
-#endif
-
 #elif defined(_WIN32)
 
 #define BOOST_MATH_ENDIAN_BIG_BYTE 0

include/boost/math/tools/config.hpp

@@ -33,7 +33,11 @@
 
 // The following are all defined as standalone macros as well
 // If Boost.Config is available just use those definitions because they are more fine-grained
-#define BOOST_MATH_PREVENT_MACRO_SUBSTITUTION BOOST_PREVENT_MACRO_SUBSTITUTION
+
+// Could be defined in TR1
+#ifndef BOOST_MATH_PREVENT_MACRO_SUBSTITUTION
+#  define BOOST_MATH_PREVENT_MACRO_SUBSTITUTION BOOST_PREVENT_MACRO_SUBSTITUTION
+#endif
 
 #define BOOST_MATH_CXX14_CONSTEXPR BOOST_CXX14_CONSTEXPR
 #ifdef BOOST_NO_CXX14_CONSTEXPR

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));
+        BOOST_MATH_ASSERT(q == T(0.5));
+    }
+
+    return 0;
+}