X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-floorf2.c;h=b26a508351d875fb38177d05ebdce6e318fff3e2;hb=880d107;hp=573a648ea1879eba106945eadd1ffe442d135d3d;hpb=8d8eda4eab3d2801251daf4eb31756c3595e2fc6;p=gnulib.git

diff --git a/tests/test-floorf2.c b/tests/test-floorf2.c
index 573a648ea..b26a50835 100644
--- a/tests/test-floorf2.c
+++ b/tests/test-floorf2.c
@@ -16,6 +16,9 @@
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
+/* When this test fails on some platform, build it together with the gnulib
+   module 'fprintf-posix' for optimal debugging output.  */
+
 #include <config.h>
 
 #include <math.h>
@@ -119,8 +122,10 @@ check (float x)
       return 0;
     else
       {
+#if GNULIB_TEST_FPRINTF_POSIX
         fprintf (stderr, "floorf %g(%a) = %g(%a) or %g(%a)?\n",
                  x, x, reference, reference, result, result);
+#endif
         return 1;
       }
   }