[Boost-commit] svn:boost r66838 - trunk/libs/math/example

Subject: [Boost-commit] svn:boost r66838 - trunk/libs/math/example
From: pbristow_at_[hidden]
Date: 2010-11-29 05:21:59

Author: pbristow
Date: 2010-11-29 05:21:56 EST (Mon, 29 Nov 2010)
New Revision: 66838
URL: http://svn.boost.org/trac/boost/changeset/66838

Log:
Limit use of max_digits10 to MSVC 10
Text files modified: 
   trunk/libs/math/example/geometric_examples.cpp |    12 ++++++++----                            
   1 files changed, 8 insertions(+), 4 deletions(-)

Modified: trunk/libs/math/example/geometric_examples.cpp
==============================================================================
--- trunk/libs/math/example/geometric_examples.cpp	(original)
+++ trunk/libs/math/example/geometric_examples.cpp	2010-11-29 05:21:56 EST (Mon, 29 Nov 2010)
@@ -62,9 +62,8 @@
 {
   cout <<"Geometric distribution example" << endl;
   cout << endl;
-  cout.precision(std::numeric_limits<double>::max_digits10);
-  // gives all potentially significant digits for the type, here double.
-  cout.precision(4); 
+
+  cout.precision(4); // But only show a few for this example.
   try
   {
 //[geometric_eg1_2
@@ -156,7 +155,12 @@
 So in Boost.Math the equivalent is
 */
     geometric g05(0.5);  // Probability of success = 0.5 or 50%
-    cout.precision(numeric_limits<double>::max_digits10); // Display all potentially significant digits.
+    // Output all potentially significant digits for the type, here double.
+#if (_MSC_VER >= 1600)
+    cout.precision(std::numeric_limits<double>::max_digits10);
+#else
+    cout.precision(2 + (boost::math::policies::digits<double, boost::math::policies::policy<> >() * 30103UL) / 100000UL);
+#endif
     cout << cdf(g05, 0.0001) << endl; // returns 0.5000346561579232, not exact 0.5.
 /*`To get the R discrete behaviour, you simply need to round with,
 for example, the `floor` function.