X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=tests%2Ftest-truncl.c;h=f8ce551e9c8828ba91e525547169835caf960e29;hb=4097b52187106b6a2940d28968cfecd4e53f9b4e;hp=8924c19d9340f9f86c661ffba2f73a40d36482bb;hpb=66e25598804aa2db1efeebc377792a6053efdd20;p=gnulib.git
diff --git a/tests/test-truncl.c b/tests/test-truncl.c
index 8924c19d9..f8ce551e9 100644
--- a/tests/test-truncl.c
+++ b/tests/test-truncl.c
@@ -1,10 +1,10 @@
/* Test of rounding towards zero.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2009 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 . */
/* Written by Bruno Haible , 2007. */
@@ -21,11 +20,13 @@
#include
+#include
#include
#include
#include "fpucw.h"
#include "isnanl-nolibm.h"
+#include "nan.h"
#define ASSERT(expr) \
do \
@@ -33,11 +34,28 @@
if (!(expr)) \
{ \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+ fflush (stderr); \
abort (); \
} \
} \
while (0)
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+ So we use minus_zero instead.
+ IRIX cc can't put -0.0L into .data, but can compute at runtime.
+ Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
+ platforms, such as when cross-compiling to PowerPC on MacOS X 10.5. */
+#if defined __hpux || defined __sgi
+static long double
+compute_minus_zero (void)
+{
+ return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zero compute_minus_zero ()
+#else
+long double minus_zero = -0.0L;
+#endif
+
int
main ()
{
@@ -47,7 +65,7 @@ main ()
/* Zero. */
ASSERT (truncl (0.0L) == 0.0L);
- ASSERT (truncl (-0.0L) == 0.0L);
+ ASSERT (truncl (minus_zero) == 0.0L);
/* Positive numbers. */
ASSERT (truncl (0.3L) == 0.0L);
ASSERT (truncl (0.7L) == 0.0L);
@@ -72,7 +90,7 @@ main ()
ASSERT (truncl (1.0L / 0.0L) == 1.0L / 0.0L);
ASSERT (truncl (-1.0L / 0.0L) == -1.0L / 0.0L);
/* NaNs. */
- ASSERT (isnanl (truncl (0.0L / 0.0L)));
+ ASSERT (isnanl (truncl (NaNl ())));
return 0;
}