gettimeofday: port recent C++ fix to Emacs

[gnulib.git] / tests / test-signbit.c

diff --git a/tests/test-signbit.c b/tests/test-signbit.c
index 3a87c64..e8ea097 100644 (file)
--- a/tests/test-signbit.c
+++ b/tests/test-signbit.c
@@ -1,10 +1,10 @@
 /* Test of signbit() substitute.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,8 +12,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
@@ -21,10 +20,17 @@
 
 #include <math.h>
 
+/* signbit must be a macro.  */
+#ifndef signbit
+# error missing declaration
+#endif
+
+#include <float.h>
 #include <limits.h>
-#include <stdlib.h>
 
-#define ASSERT(expr) if (!(expr)) abort ();
+#include "minus-zero.h"
+#include "infinity.h"
+#include "macros.h"
 
 float zerof = 0.0f;
 double zerod = 0.0;
@@ -40,9 +46,15 @@ test_signbitf ()
   ASSERT (signbit (-2.718f));
   ASSERT (signbit (-2.718e30f));
   ASSERT (signbit (-2.718e-30f));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0f));
+  if (1.0f / minus_zerof < 0)
+    ASSERT (signbit (minus_zerof));
+  else
+    ASSERT (!signbit (minus_zerof));
   /* Infinite values.  */
-  ASSERT (!signbit (1.0f / 0.0f));
-  ASSERT (signbit (-1.0f / 0.0f));
+  ASSERT (!signbit (Infinityf ()));
+  ASSERT (signbit (- Infinityf ()));
   /* Quiet NaN.  */
   (void) signbit (zerof / zerof);
 #if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT
@@ -79,9 +91,15 @@ test_signbitd ()
   ASSERT (signbit (-2.718));
   ASSERT (signbit (-2.718e30));
   ASSERT (signbit (-2.718e-30));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0));
+  if (1.0 / minus_zerod < 0)
+    ASSERT (signbit (minus_zerod));
+  else
+    ASSERT (!signbit (minus_zerod));
   /* Infinite values.  */
-  ASSERT (!signbit (1.0 / 0.0));
-  ASSERT (signbit (-1.0 / 0.0));
+  ASSERT (!signbit (Infinityd ()));
+  ASSERT (signbit (- Infinityd ()));
   /* Quiet NaN.  */
   (void) signbit (zerod / zerod);
 #if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
@@ -116,9 +134,15 @@ test_signbitl ()
   ASSERT (signbit (-2.718L));
   ASSERT (signbit (-2.718e30L));
   ASSERT (signbit (-2.718e-30L));
+  /* Zeros.  */
+  ASSERT (!signbit (0.0L));
+  if (1.0L / minus_zerol < 0)
+    ASSERT (signbit (minus_zerol));
+  else
+    ASSERT (!signbit (minus_zerol));
   /* Infinite values.  */
-  ASSERT (!signbit (1.0L / 0.0L));
-  ASSERT (signbit (-1.0L / 0.0L));
+  ASSERT (!signbit (Infinityl ()));
+  ASSERT (signbit (- Infinityl ()));
   /* Quiet NaN.  */
   (void) signbit (zerol / zerol);
 #if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT