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authorStephen Kitt <skitt@debian.org>2016-05-27 10:11:04 +0200
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:33 +0100
commit752fd7247bc223bcea35bd89cf56d1c08ead9ba6 (patch)
treeb4a428f847a963738faaf24c8eff070fdb03a3a5 /tests/test-signbit.c
parent9f7d4fa477ff2a51d7c932b13d57ac22dc033105 (diff)
parenta9a31b1de5776a3b08a82101a4fa711294f0dd1d (diff)
Imported Debian patch 0.9.6+really0.9.3-0.1debian/0.9.6+really0.9.3-0.1
Diffstat (limited to 'tests/test-signbit.c')
-rw-r--r--tests/test-signbit.c60
1 files changed, 35 insertions, 25 deletions
diff --git a/tests/test-signbit.c b/tests/test-signbit.c
index 80e9a08..9581190 100644
--- a/tests/test-signbit.c
+++ b/tests/test-signbit.c
@@ -1,5 +1,5 @@
/* Test of signbit() substitute.
- Copyright (C) 2007-2015 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008, 2009, 2010 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
@@ -28,14 +28,34 @@
#include <float.h>
#include <limits.h>
-#include "minus-zero.h"
-#include "infinity.h"
#include "macros.h"
float zerof = 0.0f;
double zerod = 0.0;
long double zerol = 0.0L;
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
+ So we use -zerof instead. */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+ So we use -zerod instead. */
+
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+ So we use minus_zerol 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_zerol (void)
+{
+ return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
+#else
+long double minus_zerol = -0.0L;
+#endif
+
static void
test_signbitf ()
{
@@ -48,13 +68,13 @@ test_signbitf ()
ASSERT (signbit (-2.718e-30f));
/* Zeros. */
ASSERT (!signbit (0.0f));
- if (1.0f / minus_zerof < 0)
- ASSERT (signbit (minus_zerof));
+ if (1.0f / -zerof < 0)
+ ASSERT (signbit (-zerof));
else
- ASSERT (!signbit (minus_zerof));
+ ASSERT (!signbit (-zerof));
/* Infinite values. */
- ASSERT (!signbit (Infinityf ()));
- ASSERT (signbit (- Infinityf ()));
+ ASSERT (!signbit (1.0f / 0.0f));
+ ASSERT (signbit (-1.0f / 0.0f));
/* Quiet NaN. */
(void) signbit (zerof / zerof);
#if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT
@@ -93,13 +113,13 @@ test_signbitd ()
ASSERT (signbit (-2.718e-30));
/* Zeros. */
ASSERT (!signbit (0.0));
- if (1.0 / minus_zerod < 0)
- ASSERT (signbit (minus_zerod));
+ if (1.0 / -zerod < 0)
+ ASSERT (signbit (-zerod));
else
- ASSERT (!signbit (minus_zerod));
+ ASSERT (!signbit (-zerod));
/* Infinite values. */
- ASSERT (!signbit (Infinityd ()));
- ASSERT (signbit (- Infinityd ()));
+ ASSERT (!signbit (1.0 / 0.0));
+ ASSERT (signbit (-1.0 / 0.0));
/* Quiet NaN. */
(void) signbit (zerod / zerod);
#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
@@ -141,8 +161,8 @@ test_signbitl ()
else
ASSERT (!signbit (minus_zerol));
/* Infinite values. */
- ASSERT (!signbit (Infinityl ()));
- ASSERT (signbit (- Infinityl ()));
+ ASSERT (!signbit (1.0L / 0.0L));
+ ASSERT (signbit (-1.0L / 0.0L));
/* Quiet NaN. */
(void) signbit (zerol / zerol);
#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
@@ -151,16 +171,6 @@ test_signbitl ()
#define NWORDS \
((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
-
-#if defined __powerpc__ && LDBL_MANT_DIG == 106
- /* This is PowerPC "double double", a pair of two doubles. Inf and Nan are
- represented as the corresponding 64-bit IEEE values in the first double;
- the second is ignored. Manipulate only the first double. */
- #undef NWORDS
- #define NWORDS \
- ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
-#endif
-
memory_long_double m;
m.value = zerol / zerol;
# if LDBL_EXPBIT0_BIT > 0