Initial commit

libs/math/test/ztest_max_digits10.cpp

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+
+ // Copyright 2010 Paul A. Bristow
+//
+// 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)
+
+/* Temporary test program to discover which platforms support
+
+numeric_limits
+
+digits10 and
+
+new max_digits10.
+
+This is needed to produce or select a macro to avoid compilation failure in Boost.Test
+for platforms that do not include either or both of these.
+
+BOOST_NO_NUMERIC_LIMITS_LOWEST is suitable but deprecated.
+
+
+[Boost C++ Libraries]
+
+#5758: Boost.Test Floating-point comparison diagnostic output does not support radix 10.
+
+*/
+
+#include <boost/config.hpp>
+#include <boost/version.hpp>
+
+#include <iostream>
+#include <limits>
+
+int main()
+{
+   std::cout  << "Platform: " << BOOST_PLATFORM            << '\n'
+        << "Compiler: " << BOOST_COMPILER            << '\n'
+        << "STL     : " << BOOST_STDLIB              << '\n'
+        << "Boost   : " << BOOST_VERSION/100000      << "."
+                        << BOOST_VERSION/100 % 1000  << "."
+                        << BOOST_VERSION % 100       << std::endl;
+
+   int digits10 = std::numeric_limits<double>::digits10;
+   int max_digits10 = std::numeric_limits<double>::max_digits10;
+
+   std::cout << "std::numeric_limits<double>::digits10 = " << digits10 << std::endl;
+
+   std::cout << "std::numeric_limits<double>::max_digits10 = " << max_digits10 << std::endl;
+
+
+} // int main()
+
+/*
+
+Output:
+
+  Description: Autorun "J:\Cpp\MathToolkit\test\Math_test\Debug\ztest_max_digits10.exe"
+  Platform: Win32
+  Compiler: Microsoft Visual C++ version 10.0
+  STL     : Dinkumware standard library version 520
+  Boost   : 1.50.0
+  std::numeric_limits<double>::digits10 = 15
+  std::numeric_limits<double>::max_digits10 = 17
+
+
+
+*/