X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=tests%2Ftest-roundf-ieee.c;h=c5c81791b50ffe09e93b02aaed84ea891eb0ca60;hb=7170ee077cc44186a70cb264ceb8352a1349e05b;hp=3948401a2004dee1f3dd2f6243866d9c0a6c058c;hpb=4ee2d29251b218b1f4f520494499e55b6d1714ba;p=pspp

diff --git a/tests/test-roundf-ieee.c b/tests/test-roundf-ieee.c
index 3948401a20..c5c81791b5 100644
--- a/tests/test-roundf-ieee.c
+++ b/tests/test-roundf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2011 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
@@ -25,9 +25,20 @@
 int
 main ()
 {
+  /* See IEEE 754, section 6.3:
+       "the sign of the result of the round floating-point number to
+        integral value operation is the sign of the operand. These rules
+        shall apply even when operands or results are zero or infinite."  */
+
   /* Zero.  */
   ASSERT (!signbit (roundf (0.0f)));
   ASSERT (!!signbit (roundf (minus_zerof)) == !!signbit (minus_zerof));
+  /* Positive numbers.  */
+  ASSERT (!signbit (roundf (0.3f)));
+  ASSERT (!signbit (roundf (0.7f)));
+  /* Negative numbers.  */
+  ASSERT (!!signbit (roundf (-0.3f)) == !!signbit (minus_zerof));
+  ASSERT (!!signbit (roundf (-0.7f)) == !!signbit (minus_zerof));
 
   return 0;
 }