X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-floorf2.c;h=87fa27a79c30e14719292e0bfb45853a27edb3f3;hb=5b9e0c3ce734b9d9b0c0001e31b65a8a4713700d;hp=b26a508351d875fb38177d05ebdce6e318fff3e2;hpb=ba564f2164f381af846d9695e6465cffe7ec918c;p=gnulib.git

diff --git a/tests/test-floorf2.c b/tests/test-floorf2.c
index b26a50835..87fa27a79 100644
--- a/tests/test-floorf2.c
+++ b/tests/test-floorf2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2010 Free Software Foundation, Inc.
+   Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -63,8 +63,12 @@ floorf_reference (DOUBLE x)
 
   if (z > L_(0.0))
     {
+      /* For 0 < x < 1, return +0.0 even if the current rounding mode is
+         FE_DOWNWARD.  */
+      if (z < L_(1.0))
+        z = L_(0.0);
       /* Avoid rounding errors for values near 2^k, where k >= MANT_DIG-1.  */
-      if (z < TWO_MANT_DIG)
+      else if (z < TWO_MANT_DIG)
         {
           /* Round to the next integer (nearest or up or down, doesn't matter).  */
           z += TWO_MANT_DIG;
@@ -76,6 +80,9 @@ floorf_reference (DOUBLE x)
     }
   else if (z < L_(0.0))
     {
+      /* Work around ICC's desire to optimize denormal floats to 0.  */
+      if (z > -FLT_MIN)
+        return L_(-1.0);
       /* Avoid rounding errors for values near -2^k, where k >= MANT_DIG-1.  */
       if (z > - TWO_MANT_DIG)
         {