1 files changed, 77 insertions, 0 deletions
diff --git a/src/boost/libs/multiprecision/test/issue_13301.cpp b/src/boost/libs/multiprecision/test/issue_13301.cpp
new file mode 100644
index 00000000..f2192d0e
--- /dev/null
+++ b/src/boost/libs/multiprecision/test/issue_13301.cpp
@@ -0,0 +1,77 @@
+///////////////////////////////////////////////////////////////////////////////
+//  Copyright 2016 John Maddock. Distributed under 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)
+
+#include <boost/multiprecision/cpp_bin_float.hpp>
+
+int main()
+{
+   typedef boost::multiprecision::number<boost::multiprecision::cpp_bin_float<8, boost::multiprecision::backends::digit_base_2> > quarter_float;
+
+   quarter_float qf(256);
+
+   unsigned int ui = qf.convert_to<unsigned int>();
+   if (ui != 256)
+      return 1;
+
+   boost::uintmax_t m(1), n;
+   m <<= std::numeric_limits<boost::uintmax_t>::digits - 1;
+   qf = m;
+   n  = qf.convert_to<boost::uintmax_t>();
+   if (m != n)
+      return 2;
+   qf *= 2;
+   n = qf.convert_to<boost::uintmax_t>();
+   m = (std::numeric_limits<boost::uintmax_t>::max)();
+   if (m != n)
+      return 3;
+
+   qf     = 256;
+   int si = qf.convert_to<int>();
+   if (si != 256)
+      return 4;
+   boost::intmax_t sm(1), sn;
+   sm <<= std::numeric_limits<boost::intmax_t>::digits - 1;
+   qf = sm;
+   sn = qf.convert_to<boost::intmax_t>();
+   if (sm != sn)
+      return 5;
+   qf *= 2;
+   sn = qf.convert_to<boost::intmax_t>();
+   sm = (std::numeric_limits<boost::intmax_t>::max)();
+   if (sm != sn)
+      return 6;
+
+   // Again with negative numbers:
+   qf = -256;
+   si = qf.convert_to<int>();
+   if (si != -256)
+      return 7;
+   sm = 1;
+   sm <<= std::numeric_limits<boost::intmax_t>::digits - 1;
+   sm = -sm;
+   qf = sm;
+   sn = qf.convert_to<boost::intmax_t>();
+   if (sm != sn)
+      return 8;
+   qf *= 2;
+   sn = qf.convert_to<boost::intmax_t>();
+   sm = (std::numeric_limits<boost::intmax_t>::min)();
+   if (sm != sn)
+      return 9;
+
+   // Now try conversion to cpp_int:
+   qf                               = 256;
+   boost::multiprecision::cpp_int i = qf.convert_to<boost::multiprecision::cpp_int>(), j;
+   if (i != 256)
+      return 10;
+   qf = ldexp(qf, 126);
+   i  = qf.convert_to<boost::multiprecision::cpp_int>();
+   j  = 256;
+   j <<= 126;
+   if (i != j)
+      return 11;
+
+   return 0;
+}